Strainer

4 -1
 Step 0 Type/Structure/Features
Please refer to this for structure and features of
Strainer.

Step 1 Select
Please look at the ID chart to choose the right products
depending on the intended of uses. Confirm the
additional details on the product page.

Step 2 Sizing
Please refer to nominal size selection value table or
calculation formula of nominal size selection P. 4 -12 for
selecting the suitable model and size.

Step 3 Attentions for usage

Please check guidelines for optimal usage of Strainer
such as installation.

4 -2
 Strainer

Selection of Strainer
Y type strainer
Applications
A compact type strainer with low fluid resistance and
requiring less installation space.
4
Strainer

Basket strainer
Applications
A basket strainer is suitable for liquid, equipped with
What is the strainer ? a larger filtration area than Y type strainer.

A strainer catches foreign

substances inside of piping and Straight type strainer
prevents them to flow inside of Applications
the piping for steam, air, water,
Excellent type in workability and maintenance.
and oil systems for a factory or
plant, as well as problems or
damage to devices attributable
to the ingress of foreign Duplex strainer
substances. Applications
The screen can be cleaned without stopping the
fluid because the fluid passage can be switched.

Temporary strainer
Applications
A piping flushing type strainer to be used prior to
operation.

* On structure of strainer, it can not completely catch foreign substance less than mesh size selection as shown below.

Meshes
25.4 mm

The mesh size is the number of

meshes in 25.4 mm (1 inch).
What is the mesh size? Example: In the right figure,
the mesh size is five.

Specification for Japanese government Yoshitake standard

For water 40 mesh or more 40·60 mesh
(80 mesh or more when installed before a solenoid valve

For steam 80 mesh or more 80 mesh

5 mesh
Table of standard mesh per model
Standard meshes Model
40 mesh SU-6·6SS

SY-40C, SY-24·24-N, SY-6-N, SY-6L, SU-10·10S, SU-20·20S·20C·20H, SU-12, SU-50H·50S·50SS,

60 mesh
SW-10·10S, SU-55F, ST-10
SY-2, SY-5, SY-40·40EN·40H, SY-6, SY-17, SY-8, SY-10-30, SY-10H·10HS, SY-20-10·20, SY-13·13SS,
80 mesh
ST-1

4 -3 www.yoshitake.jp
 Strainer

Step
Meshes 0
Comparison of meshes and particle sizes
Particle sizes 50 100 200 300 500 1.0 mm 2.0 mm3.0 mm 5.0 mm 10 mm

Yoshitake mesh 4
200

150
120
100
80

60
50

40

30

20

Strainer
400

300

45

24

14

10

4
Reference mesh
350

250

180

35

16

12

3
Particle sizes 50 100 200 300 500 1.0 mm 2.0 mm3.0 mm 5.0 mm 10 mm

* Note that because of the structure, the capability to catch foreign substances equivalent to standard meshes may not be
guaranteed. Please contact us when the passing of foreign substances is not permissible.
Porosity of screen
· Porosity of perforation · Dimensions of screen
Hole diameter (mm)–––No. of hole (holes/cm2) Porosity (%) Meshes dimensions
φ1.2 ────23.8 26.98 20 φ0.315
φ1.3 ────16.2 21.59 30 φ0.25
φ1.5 ────11.2 19.96 40 φ0.193
φ2.5 ──── 7.21 35.42 50 φ0.193
φ6 ──── 1.42 40.30 60 φ0.152
φ6 ──── 1.80 50.63 80 φ0.12
φ8 ──── 0.954 47.96 100 φ0.1
φ10 ──── 0.739 58.04 120 φ0.08
150 φ0.08
200 φ0.05
250 φ0.04
* This value is “only advisory”.
· Screen porosity table (%)
Meshes
Model 20 30 40 50 60 80 100 120 150 200 250
SY-5, 6, 9, 10, 17, 20, 24, 40, 40EN, 40H 59.5 49.6 51.3 41.6 44.8 38.6 36.7 — — — —
SY-37, 38 38.6 41.6 36.7 —
SU-10, 10S, 12, 20, 20S, 50H, 50S, 50SS 59.5 49.6 51.3 41.6 44.8 38.6 36.7 38.6 41.6 — —
SW-10, 10S
SY-8 (15A-100A) 59.5 49.6
51.3 41.6 44.8 38.6 36.7 — — — —
SY-8 (125A-150A) 52.5 43.2
SY-13, SU-6 53.6 49.6 46.9 41.6 44.7 38.6 36.7 — — — —
ST-1 52.5 46.4 40.7 39.2 41.7 38.7 36.8 38.6 38 36.8 36.8

How to calculate the filtration area and filtration area ratio of a strainer (Please contact us for SU-10 and ST-10).
Calculate the filtration area ratio of a strainer to the bore as shown below.
Filtration area of Y type strainer = Surface area of screen (π·ds· s) x porosity of perforated sheet x porosity of mesh screen
Filtration area of basket type and duplex type strainers =
π·ds2
Surface area of screen (π·ds· s + 4 ) x porosity of perforated sheet x porosity of mesh screen
Filtration area of strainer (D: Bore)
Filtration area ratio to bore =
2
Inside cross sectional area of piping π·D
4
<Calculation example>
Calculate the filtration area of an 80A SY-8 strainer with a 40 mesh screen
(ds = φ88, s = 130, perforated sheet φ2.5-7.21 holes/cm2).
Filtration area of strainer = (π x 88 x 130) x 0.3542 x 0.513 6530 (mm2)
π x 80.72
Inside cross sectional area of piping = 5114 (mm2) (Assuming that the bore is φ80.7)
4
Consequently,
Filtration area ratio to bore = 6530 1.27 (times)
5114

www.yoshitake.jp 4 -4
 Strainer

Features of Y Type Strainer

The Y type strainer can be widely used for removing dirt and
Use this strainer for applications such as: dust from pipelines. Lightweight and compact, the Y type
Mainly for removing dirt and dust from steam or air strainer comes in a wide variety of structures, shapes, and

4 piping and for protecting control valves. mesh types.

Strainer

Selectable materials Lightweight and compact

Available with various materials, Lightweight, compact, and designed
including ductile cast iron, carbon for easy piping.
steel, bronze, and stainless steel
for the body.

Large filtration area

Marine type with the largest
possible filtration area in view of
decrease in flow rate caused by
clogging.
Easy plug
Available with “easy plug”
which makes the removal and
cleaning of the internal screen
easy (SY-9).

∙ Adoption a folded structure by press ∙ Printing by laser marker

YS logo

Mesh, Code number

∙ Standard products
Model Size Model Size
SY-40, SY-40H 15A-100A SY-17 15A-50A
SY-5 10A-50A SY-8 15A-100A
SY-6, SY-6-N 15A-50A SY-24, SY-24-N 15A-50A

4 -5 www.yoshitake.jp
 Strainer

Step
Features of Basket Strainer 0
The basket strainer can be widely used mainly for removing
Use this strainer for applications such as: dirt and dust from pipelines for liquids.
∙ For industrial water
∙ For combustion oil for boilers, etc.
4

Strainer
One-touch cover

Selectable materials
Available with various
materials, including ductile
cast iron, carbon steel and
stainless steel as materials
for the body. Available with
nylon-coated basket strainer
(SU-20C).
SU-20S
Available with
one-touch type
allowing the screen
to be removed by
unfastening a bolt. Screen with a handle
Since the screen is provided
with a handle, it is possible
to remove it with user's
hands kept clean.

Large filtration area

The internal screen has
a large surface area (1.5
times to twice that of other
structures), which helps
reduce pressure loss due to
clogging.

SU-20 SU-10 SU-50H

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 Strainer

Features of Duplex Strainer

The duplex strainer can be widely used for removing dirt and
Use this strainer for applications such as: dust from pipelines for water and oil. By switching the right or
Systems that must keep the fluid flowing, such as left passage to the other, the screen can be washed without

4 fuel supply lines. stopping the fluid.

Strainer

One-touch operation
The SW-10S strainer is a
one-touch type strainer
No other tools required whose screen can be easily
removed.
Switching can be performed with
the attached tool.

Anchor base
Anchor fixing is
Pull-up cock available.
The handle of a pull-up cock
type can be effortlessly
operated.

The screen can be removed and cleaned without stopping the fluid (system).
It is no need to install bypass piping.

SW-10 SW-10S

4 -7 www.yoshitake.jp
 Strainer

Step
Features of Straight Type Strainer 0
The straight strainer can be widely used for removing dirt and
Use this strainer for applications such as: dust from pipelines for water and oil.
Superior workability and maintenance for water and
oil pipelines.
4

Strainer
Free installation: horizontal or vertical installation.

High maintenance structure.

No need other tools required for cleaning the strainer screen.

Corrosion-resistance due to
electrodeposition coating of
internal and external surface.

Screen is same as the direction of piping. The pressure loss across a straight strainer is less
Straight type than that across the Y-type and Basket strainer
upon comparing to same size.

www.yoshitake.jp 4 -8
 STRAINERS Control ID Charts

Strainer ID-Charts

Max. Max.
Model Type Fluid Material Pressure Temperature Connection Size Feature Page
(MPa) (˚C)

4 SY-5 Y-type
Steam, Air,
Cold and
FCD450 2.0 220°C JIS Rc 10-50A 4 -15
hot water,
Strainer

Oil

Air, · Easy plug that

SY-9 Y-type Cold and FCD450 1.0 80°C JIS Rc 15-50A makes easy 4 -17
hot water removal of cap

SY-17 Steam, Air, 15-50A · Stainless steel 4 -19

Cold and
Y-type SCS13 2.0 150°C JIS Rc
hot water,
Oil · With fine mesh
SY-37 15-50A 4 -19
(120-200 mesh)

Steam, Air,
Cold and
SY-6 150°C 15-50A · Pipe end core 4 -21
hot water,
Oil
Y-type CAC406 1.3 JIS Rc
Cold and
SY-6-N hot water, 80°C 15-50A 4 -21
Oil · Pipe end core

SY-24 15-50A 4 -23

Cold and Inlet: JIS Rc
Y-type CAC406 1.6 80°C Outlet: JIS R
hot water
SY-24-N 15-50A 4 -23

SY-40 Steam, Air, 1.0 JIS 10KFF

Cold and 4 -25
220°C 15-150A
hot water, 4 -27
SY-40H Oil 2.0 JIS 20KFF
Y-type FCD450
Air, Cold
SY-40C-N and hot 1.0 60°C EN PN16 15-150A 4 -25
· Nylon coating
water

Steam, Air, 1.0 EN PN16 1.0 4 -27

Cold and
SY-40EN Y-type FCD450 220°C 15-150A
hot water,
Oil
2.0 EN PN25 2.0 4 -27

Steam, Air,
SY-2 Y-type Cold and FCD450 2.0 220°C JIS 20KFF 200A · 2.0 MPa 4 -29
hot water

SY-8 15-150A · Stainless steel 4 -31

Steam, Air,
Cold and
Y-type SCS13 1.0 150°C JIS 10KFF
hot water,
Oil · With fine mesh
SY-38 15-150A 4 -31
(120-200 mesh)

* Please contact us about other specifications.

4 -9 www.yoshitake.jp
 Step

1
Max. Max.
Model Type Fluid Material Pressure Temperature Connection Size Feature Page
(MPa) (˚C)

SY-20-10 1.0 JIS 10KRF 15-150A

· Cast carbon steel
for 1 MPa
4 -34 4

Strainer
Steam,
Air, Cold · Cast carbon steel
SY-20-20 Y-type and hot SCPH2 2.0 260°C JIS 20KRF 15-150A 4 -34
for 2 MPa
water, Oil

· Cast carbon steel

SY-10-30 3.0 JIS 30KRF 15-250A 4 -34
for 3 MPa

Steam, STPG· · Steel plate for large

SY-13 200-600A 4 -37
Y-type Air, Cold SS400 1.0 220°C JIS 10KFF
diameter
and hot · Steel plate for large diameter
SY-13SS water, Oil SUS304TP 200-600A 4 -37
· Stainless steel wetted parts
1.0 JIS 10KRF
SY-10H Steam, SCPH2 2.0 JIS 20KRF 15-100A · High-pressure gas 4 -34
Air, Cold 350˚C
and hot 3.0 (between JIS 30KRF
Y-type water, 2.0 and
High- 1.0 3.0 MPa JIS 10KRF
pressure 300˚C)
SY-10HS gas SCS13 2.0 JIS 20KRF 15-100A · High-pressure gas 4 -34
3.0 JIS 30KRF

SU-20 1.0 220°C JIS 10KFF 20-150A 4 -39

1.0 JIS 10KFF

SU-20H 220°C 200A 4 -50
Cold and 2.0 JIS 20KRF
Basket
hot water, FCD450
type Oil
1.0
SU-20S (125A: 0.7 80°C 20-150A · One-touch type 4 -39
150A: 0.5)
JIS 10KFF

SU-20C 1.0 60°C 20-150A · Nylon coating 4 -39

· Air vent plug and

drain plug as
SU-50H 2.0 4 -43
standard
Basket Cold and FCD450 JIS 20KRF 50-150A 2.0 MPa
80°C or (without
type hot water
EN PN16 125A)
SU-50S 1.0 · Quick-open type 4 -43

Cold
and hot · No tools required
Straight water, Oil,
ST-10 type kerosine, FCD450 1.0 80°C JIS 10KFF 125-250A while cleaning 4 -45
A·B screen
Heavy oil
* Please contact us for other specifications.

www.yoshitake.jp 4 -10
 STRAINERS Control ID Charts

Step

Strainer ID-Charts 1
Max. Max.
Model Type Fluid Material Pressure Temperature Connection Size Feature Page
(MPa) (˚C)

4
SU-10 1.0 220°C 20-150A · Stainless steel 4 -40
Strainer

Cold and
Basket
type hot water, SCS13 JIS 10KFF
Oil
1.0 · One-touch type
SU-10S (125A: 0.7 80°C 20-150A 4 -40
150A: 0.5) · Stainless steel

Basket Cold and JIS 10KRF 20-150A · Carbon steel

SU-12 hot water, SCPH2 1.0 (2.0) 260°C 4 -52
type Oil (JIS 20KRF)

STPG· · Steel plate for large

SU-6 SS400 200-650A 4 -54
Cold and diameter
Basket hot water, 1.0 120°C JIS 10KFF
type
Oil · Steel plate for large diameter
SU-6SS·6AS SUS304TP 200-650A 4 -54
· Stainless steel

SU-55F Basket Cold and

hot water CAC406 1.2 60°C JIS Rc 15A 4 -58
type

FCD450
SW-10 20-100A 4 -56
SUS13
Cold and
Duplex hot water, 1.0 80°C JIS 10KFF
type Oil
FCD450
SW-10S 20-100A · One-touch type 4 -56
SCS13

Steam, Air, 1.0 JIS 10KFF

ST-1 Cone type Cold and SUS304 (2.0·3.0·4.0) 220°C (20K·30K·40KFF) 25-300A · Temporary
4 -59
hot water

* Please contact us for other specifications.

4 -11 www.yoshitake.jp
 Strainer

Step
How to Select Nominal Size 1
2
A strainer can work most effectively and completely <Standard flow velocity of fluids>
fulfill working conditions if the following are taken into
Fluid Remarks Standard flow velocity
account:
Auxiliary piping for vacuum
Selecting a nominal size 15m/s(10-20)
Saturated steam or small-diameter piping
Select a strainer of the same nominal size as that of
the piping to which it will be connected (nominal size Superheated vapor
Large-diameter piping 30m/s(20-40)
Piping diameter: Approx.φ75-φ250 40m/s(30-50) 4
Piping of high-grade material 70m/s(65-80)
of piping = nominal size of strainer). Please notice that

Strainer
Inlet of steam coil 0.3-0.7 MPa 30m/s(25-30)
by using a strainer of a smaller nominal size increases
High pressure: 1.0 MPa 20m/s(20-25)
the pressure loss of the strainer and may disable it from
Air Low pressure 15m/s( 5-15)
keeping specified pressure at the inlet of device. Extremely low pressure: 0.1 MPa 10m/s( 3-10)
Selecting a piping nominal size Water, oil 2m/s( 2- 4)

Selecting large piping nominal size as possible is an ideal * This table shows the standard flow velocity of each fluid based
way to reduce pressure loss inside piping. On the other on the flow velocities specified in JIS F 7101 (Shipbuilding --
hand, the smaller the piping nominal size, the better in Pipes of machinery -- Standard velocity of flow).
view of piping and equipment costs. Additionally, heat
loss rises with an increase in piping nominal size. In selecting a piping nominal size, determine permissible
pressure loss based on the application, and find the smallest piping nominal size that can keep actual
pressure loss within the determined range. However, an excessively high flow velocity accelerates wear
in piping and may cause vibration. In general, the standard flow velocity of a fluid is set according to the
application and based on the type and properties of the fluid and the piping nominal size.

How to Read Pressure Loss Chart

Water's nominal
1. When water or a fluid close to water in viscosity and size line
specific gravity is used: Correction
V: Flow rate L/min

nominal size line

Find the intersection point of the flow rate V L/min and the
pressure loss ΔP MPa (usually 0.02 MPa to 0.03 MPa) on
the pressure loss chart for the strainer. The nominal size
line above the intersection point represents the required
nominal size.
Correction
2. When the fluid to be used is different from water in pressure loss
viscosity and specific gravity:
Take any of each nominal size from pressure loss chart P: Pressure loss MPa
(for water) in each product, and calculate the pressure <Calculation formula>
loss at that point using the expression shown below. Draw
r
a line of the same gradient as water's nominal size line. ΔP = ΔPw (0.00379v + 1)
rw
Then, find the required nominal size as described in 1.
ΔP : Pressure loss when the fluid is flowing [MPa]
3. When the filter element and the filter screen are different:
ΔPw : Pressure loss when water is flowing [MPa]
Pressure loss seldom changes even if our perforated r : Weight volume ratio of the fluid [kg/m3]
sheet and filter screen are replaced. However, fine ones rw : Weight volume ratio of water [kg/m3]
and coarse ones are different in the state and progression v : Kinetic viscosity coefficient [cSt]
of clogging. Set a higher safety factor for a finer one. : Correction coefficient
4. How to calculate the pressure loss of a strainer:
Find the intersection point of the nominal size line and the <Calculation example>
flow rate on the chart. The ΔP value at the intersection Calculate the pressure loss of an 80A SU-20
point is the pressure loss of the strainer. strainer when a lubricating oil (weight volume ratio:
900 kg/m3, kinetic viscosity coefficient: 200 cSt)
*Use the expression shown below to calculate pressure
flows at a rate of 300 L/min.
loss when a fluid other than water is used and its weight Calculate the pressure loss of water from the chart.
volume ratio and kinetic viscosity coefficient are different
from those of water. ΔPw = 0.004 MPa
900
5. The correction coefficient ratio for basket strainer is 2. ΔP = 0.004 x x (0.00379 x 200 + 1) x 2
1000
Please contact us for coefficient of duplex strainer.
= 0.013 MPa

www.yoshitake.jp 4 -12
 Strainer

Step
Guidelines for Installation of Strainer 3
∙ Use a strainer under a maximum pressure loss of 0.1 MPa or less.
∙ Whether a strainer is clogged can be checked by installing a pressure gauge before and after it.
∙ When installing a strainer, prepare space for removing the screen from it.
4 ∙ Do not apply back pressure from the outlet of a strainer because the filter screen may separate from the
perforated sheet.
Strainer

Guidelines for Y type strainer

Fig. 1
Install the Y type strainer with the
cap down. Remove the drain plug,
and attach a blow valve. The dirt
accumulating in the lower portion of
the strainer can be discharged (see Y type strainer
Fig.1).

Blow

When the fluid is steam, connect

Fig. 2
piping so that the cap faces sideways
in order to minimize the pooling of
condensate (see Fig.2).

Y type strainer

Guidelines for Basket strainer

Connect the basket strainer to piping with the mounting cover up.

Mounting cover

Basket strainer

4 -13 www.yoshitake.jp
 Strainer

Step
Guidelines for the Installation of Strainer 3
Duplex strainer
Switch the cock according to the operation procedure described below (the cock will get damaged if
switching is carried out without pulling up the cock).
4
Operation procedure

Strainer
1. 2. 3.
Handle Handle

Petagonal
screw Stopper
Hexagonal Adjusting screw Adjusting screw
Hexagonal
hole Cock
hole

Slide the handle's head with the Slide the handle's head with the After the cock is switched, turn the
hexagonal hole over the adjusting pentagonal hole over the cock (with adjusting screw counterclockwise, the
screw, and give the screw one or two the stopper down), switch the cock to opposite direction of the operation in
clockwise turns (the cock rises). the right or left. (1).

Precautions

1: The pressure loss during switching reaches a

maximum value when the angle at the time of the
change of the direction of flow of the fluid is 45°.
Inlet
End of arrow End of arrow
2: Keep the fluid flowing when turning the handle
Cock Arrow on cock
(otherwise, the strainer body and the cock may be and handle
galled). Handle
3: The cock will get damaged if switching is carried out Stopper
without pulling up the cock. Arrow of flow
90°
direction
4: The cock will get damaged if switching is carried out
without pulling up the cock.
Outlet
5: If the cock and the adjusting screw simultaneously
turn, lightly hold either of them with a wrench, etc.
6: Do not tighten the adjusting screw to an excessive
torque. <Adjusting the direction of flow>
Align the arrow marked on each of the cock and
the handle with the end mark of the arrow on
the screen used (the position at which the handle
no longer turns by the handle).

www.yoshitake.jp 4 -14
 Strainer

SY-5
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

Features
1. Versatile, compact, lightweight and economical.
2. High-flow-rate marine type with the largest possible
filtration area in view of decrease in flow rate caused by 10A-32A

clogging.

Specifications
Application Steam, Air, Cold and hot water, Other non-dangerous fluids
Maximum pressure 2.0 MPa
Maximum temperature 220°C
Body Ductile cast iron
Material
Screen Stainless steel
Perforation φ2.5-7.21 holes/cm2
Screen
Mesh Standard 80 mesh
Connection JIS Rc screwed 40A-50A
∙ Available with 20 to 100 mesh screen (perforation: φ2.5-7.21 holes/cm2) or only with
perforation (φ1.2-23.8 holes/cm2) on request.
∙ Available with 10A to 32A attached with a plug (material: S15C).
∙ Available with a brass plug.
∙ Recommend to use SY-6 for cold and hot water application.

Dimensions (mm) and Weights (kg)

Size d L H1 ds s Plug Weight
10A Rc 3/8 65 50 18 32 (R 1/4) 0.4
15A Rc 1/2 75 55 20 35 (R 1/4) 0.6
20A Rc 3/4 90 70 25 50 (R 3/8) 0.9
25A Rc 1 110 85 32 60 (R 3/8) 1.4
32A Rc 1-1/4 135 95 40 70 (R 3/8) 2.2
40A Rc 1-1/2 145 105 45 75 R 3/8 3.4
50A Rc 2 170 120 56 90 R 3/8 4.5
* Please do not use other than Yoshitake product for gasket and screen.

4 -15 www.yoshitake.jp
 SY-5

Strainer
d

ds

䱃s
䪻 Plug

H1
Gasket

10A-32A 40A-50A

SY-5 Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ2.5-7.21 holes/cm2, Mesh = 80 mesh

1000

700 Nominal size

50A
500
40A

300 32A

200

25A
20A
100
V: Flow rate L/min

70 15A
50
10A

30

20

10

0.001 0.002 0.003 0.005 0.007 0.01 0.02 0.03 0.05 0.07 0.1
ΔP: Pressure loss MPa
Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -16
 Strainer

SY-9
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

Features
1. Light weight and compact. It is used for dust prevention
in various pipe line.
2. High-flow-rate marine type with the largest possible
filtration area in view of decrease in flow rate caused by
clogging.
3. Disassembling and cleaning are easy. The easy plug
reliefs residual pressure and makes the cap removed
easily and safely.

Specifications
Application Air, Cold and hot water, Other non-dangerous fluids
Maximum pressure 1.0 MPa
Maximum temperature 80°C
Body Ductile cast iron (FCD450)
Screen Stainless steel
Material
O ring FKM (Viton)
Cap C3604 (Brass)
Perforation φ2.5-7.21 holes/cm2
Screen
Mesh Standard 60 mesh
Connection JIS Rc screwed
· Available with 20 to 100mesh screen.

Dimensions (mm) and Weights (kg)

Size d L H1 ds s Weight
15A Rc 1/2 75 70 20 35 0.7
20A Rc 3/4 90 84 25 50 0.9
25A Rc 1 110 96 32 60 1.7
32A Rc 1-1/4 135 114 40 70 2.8
40A Rc 1-1/2 145 120 45 75 4.0
50A Rc 2 170 131 56 90 5.1
* The size of Easy-plug's cross-hole is φ10.

4 -17 www.yoshitake.jp
 SY-9

SY-9 Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ2.5-7.21 holes/cm2, Mesh = 60 mesh

Strainer
Nominal size
V: Flow rate L/min

ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -18
 Strainer

SY-17,37
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit
4
Strainer

Features
1. Cast stainless steel body is rust-less, available for a
wide variety of applications such as food, chemical
industries, and oil.
2. High-flow-rate marine type with the largest possible
filtration area in view of decrease in flow rate caused by
clogging.

Specifications
Model SY-17 SY-37 (strainer with fine mesh)
Application Steam, Air, Cold and hot water, Oil, Other non-dangerous fluids
Maximum pressure 2.0 MPa
Maximum temperature 150°C (250°C) *
Body Cast stainless steel
Material
Screen Stainless steel
Perforation φ 2.5-7.21 holes/cm2
Screen
Mesh Standard 80 mesh 120 to 200 mesh
Gasket PTFE *
Connection JIS Rc screwed
* If the temperature is more than 150˚C, another material is used for the gasket. Please L
d
contact us.
· Available with 20 to 100 mesh screen (SY-17).
· The screen for SY-37, it has become the special specification called screen (P) to
prevent the gap between the screen and the body.
· The Gasket is PTFE up to 150°C.
· Available more than 150°C by changing the material of gasket.
ds

SY-17: 15A-50A (Max Temp: 250°C)

䪻

H1

SY-37: 15A-40A (Max Temp: 250°C, 50A (Max Temp: 175°C)

䱃s

SY-17
Dimensions (mm) and Weights (kg)
Nominal size d L H1 ds s Weight L
15A Rc 1/2 85 55 20 (18) 35 0.40 (0.4) d
20A Rc 3/4 100 69 25 (23) 50 0.68 (0.7)
25A Rc 1 115 83 32 (30) 60 1.01 (1.1)
32A Rc 1-1/4 135 92 40 (38) 70 1.48 (1.6)
40A Rc 1-1/2 150 102 45 (43) 75 1.88 (2.0)
ds
䪻

50A Rc 2 180 117 56 (54) 90 3.34 (3.6)

· The above values in parentheses are the dimensions and weights of the SY-37.
H1
䱃s

SY-37

4 -19 www.yoshitake.jp
 SY-17, 37

SY-17 Strainer Pressure Loss Chart (For Water)

· Screen: Perforation =φ2.5-7.21 holes/cm2, Mesh = 80 mesh

Nominal size
4

Strainer
V: Flow rate L/min

ΔP: Pressure loss MPa

SY-37 Strainer Pressure Loss Chart (For Water)

· Screen: Perforation =φ2.5-7.21 holes/cm2, Mesh = 120 mesh

1000
Nominal size
50A

500 40A

32A
V: Flow rate L/min

25A
20A
100

15A
50

10
0.001 0.005 0.01 0.05 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -20
 Strainer

SY-6,6-N,6L JWWA approval

Y type Basket Duplex Temporary (SY-6-N, SY-6L-N)
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

Features
1. Outstanding corrosion resistance offered by bronze body.
2. Corrosive portions, such as the end faces of lining steel
piping or threads, are isolated from fluid by a pipe end
core, stopping ingress of rust (SY-6L and SY-6L-N). · What is a pipe end core?
An integral core brings the
3. The core has an O-ring structure and maintains a high
lining steel piping and the
degree of air-tightness (SY-6L and SY-6L-N). core into close contact
with each other and stops
Pipe end core the inflow of water into
threaded portion for rust
prevention.

Specifications
Model SY-6 SY-6-N SY-6L SY-6L-N
Type For general piping Common core
Steam, Air, Cold and hot
Application water, Oil, Other Cold and hot water
non-dangerous fluids
Maximum pressure 1.3 MPa 1.0 MPa
Maximum temperature 150°C (220°C) * 80°C 40°C
Body Bronze Bronze (NPb treated) Bronze Bronze (NPb treated)
Material
Screen Stainless steel
Perforation φ2.5-7.21 holes/cm2
Screen
Mesh Standard 80 mesh Standard 60 mesh
Connection JIS Rc screwed
· Available with 20 to 100 mesh screen.
· Available with 10A to 32A attached with a plug.
* If the temperature is more than 150˚C, another material is used for the gasket, please contact us.

Dimensions (mm) and Weights (kg)

Nominal size d L H1 ds s Plug Weight
15A Rc 1/2 86 55 20 35 (R 1/4) 0.5
20A Rc 3/4 98 70 25 50 (R 3/8) 0.8
25A Rc 1 117 80 32 60 (R 3/8) 1.1
32A Rc 1-1/4 145 92 40 70 (R 3/8) 1.9
40A Rc 1-1/2 148 105 45 75 R 3/8 2.6
50A Rc 2 178 122 56 90 R 3/8 3.8

4 -21 www.yoshitake.jp
 SY-6, 6-N, 6L

L d Precautions about Installation

Pipe end core Follow the instructions below
to maintain the anti-corrosion
characteristic of the pipe end core.
1. Use a steel pipe complying with the
4

Strainer
JIS standard.
2. Cut threads on the pipe according to
䱃s

ds

the JIS standard.

H1
䪻

Plug Corrosion Pipe end core

protection seal O-ring

40-50A 15-32A

SY-6, 6L, 6-N Pressure Loss Chart (For Water)

· Screen: Perforation =φ2.5-7.21 holes/cm2, Mesh = 60 mesh

Nominal size
V: Flow rate L/min

ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -22
 Strainer

SY-24,24-N JWWA approval

Y type Basket Duplex Temporary (SY-24-N)
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

Features
1. Light weight and compact. Used for dust prevention in a
cold and hot water line.
2. Able to connect directly to pressure reducing valve, and
no need for piping equipment such as nipple.
3. Screen cleaning is easy. Cap can be removed easily since
the cap sealing is O-ring.
4. No need to worry for red water because of bronze body.

Specifications
Model SY-24 SY-24-N
Application Cold and hot water
Maximum pressure 1.6 MPa
Maximum temperature 80°C
Body Bronze Bronze (NPb-treated)
Material
Screen Stainless steel
2
Perforation φ2.5-7.21 holes/cm
Screen
Mesh Standard 60 mesh
Connection Inlet: JIS Rc screwed Outlet: JIS R screwed
· Available with 20 to 100mesh screen for SY-24.
· SY-24-N mesh are 20, 40, 60, 80, 100 mesh.

Dimensions (mm) and Weights (kg)

Nominal size d L H1 ds s Weight
15A 1/2 80 46 18 32 0.25
20A 3/4 90 51 20 35 0.35
25A 1 105 63 25 50 0.55
32A 1-1/4 130 80 32 60 1.00
40A 1-1/2 150 90 40 70 1.44
50A 2 175 112 50 85 2.90

4 -23 www.yoshitake.jp
 SY-24, 24-N

SY-24 Pressure Loss Chart (For Water)

· Screen: Perforation = φ2.5-7.21 holes/cm2, Mesh = 60 mesh

1000
4

Strainer
700
Nominal size
500 50A

40A
300
32A

25A
V: Flow rate L/min

100
20A
70
15A
50

30

10

0.001 0.002 0.003 0.005 0.007 0.01 0.02 0.03 0.05 0.07 0.1
ΔP: Pressure loss MPa
Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -24
 Strainer

SY-40,40C-N JWWA approval

Y type Basket Duplex Temporary (SY-40C-N)
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4 Features SY-40

1. High-flow-rate marine type with the largest

Strainer

possible filtration area in view of decrease in

flow rate caused by clogging.
2. 65A or more (in nominal size) is designed as
compact as possible and reduced in weight,
making plumbing easy.
3. The SY-40C-N (15A to 150A) offers excellent SY-40C-N
corrosion resistance since its inner and outer
surfaces are coated with Nylon 12. 15A-32A 40A-50A

Specifications
Model SY-40 SY-40C-N
Steam, Air, Cold and hot water, Oil,
Application Air, Cold and hot water, Other non-dangerous fluids
other non-dangerous fluids
Maximum pressure 1.0 MPa
Maximum temperature 220°C 60°C
Body Ductile cast iron
Material
Screen Stainless steel
Perforation φ 2.5-7.21 holes/cm2
Screen
Mesh Standard 80 mesh Standard 60 mesh
Connection JIS 10K FF flanged
· Available with 20 to 100 mesh screen (perforation: φ2.5-7.21 holes/cm ) or only perforation (15A to 80A: φ1.3-16.2 holes/cm2,
2

100A or more: φ1.5-11.2 holes/cm2) on request.

· Available with a brass plug (the standard is S15C or FCMB310).
· Available with rust-proof (65A or more).

Plug

Gasket

Dimensions (mm) and Weights (kg)

15A-50A 40A-50A
Nominal size L H1 ds s Plug Weight
15A 130 61 22 40 _ 1.9
20A 140 75 27 56 _ 2.5
25A 160 88 34 66 _ 4.0
32A 175 104 43 76 _ 5.2
40A 190 115 50 85 R 1/2 6.7
50A 225 140 61 107 R 1/2 10.2
65A 255 167 73 125 R 1/2 14.5
H1

80A 330 190 88 130 R 1/2 18.3

100A 370 225 108 180 R 3/4 29.7
125A 415 263 136 200 R 3/4 40.5
150A 495 315 160 250 R 3/4 66.0 L
200A 565 385 210 300 R 3/4 95.8
65A-300A
250A 690 460 260 370 R 3/4 167.5
300A 840 556 315 442 R 3/4 286.0
· A screwed cap is applied to 50A or less.
· Please do not use other than Yoshitake product.

4 -25 www.yoshitake.jp
 SY-40, 40C-N

SY-40 Pressure Loss Chart (For Water)

· Screen: Perforation =φ2.5-7.21 holes/cm2, Mesh = 80 mesh

30000 Nominal 4
20000 size

Strainer
300A
250A
10000
200A
7000
150A
5000
125A
3000
100A
2000
80A
1000 65A

700 50A
V: Flow rate L/min

500 40A
32A
300
200
25A
20A
100
70 15A
50

30
20

10
7
5

1
0.001 0.002 0.003 0.005 0.007 0.01 0.02 0.03 0.05 0.07 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -26
 Strainer

SY-40EN,40H
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

Features 15A-50A
1. The SY-40EN strainer can be replaced easily from
existing strainer because it complies with face-to-face
dimensions of the EN standard.
2. High-flow-rate marine type provided with the largest
possible filtration area as a countermeasure against the
decreasing in the flow rate caused by clogging.
3. 65A or more (in nominal size) is designed as compact as
possible and reduced in weight, making plumbing easy.

65A-150A

Specifications L

Model SY-40EN SY-40H

Application Steam, Air, Cold and hot water, Other non-dangerous fluids
Maximum pressure 1.0 MPa 2.0 MPa
Maximum temperature 220°C
Body Ductile cast iron
Material
Screen Stainless steel
Perforation φ2.5-7.21 holes/cm2
Screen
Mesh Standard 80 mesh
H1

JIS 20K FF flanged

Connection EN PN16 EN PN25
ASME Class 300 flanged
∙ Available with 20 to 100 mesh screen (perforation: φ2.5-7.21 holes/cm2) or only with 15A-32A
perforration (15A to 80A: φ1.3-16.2 holes/cm2, 100A or more: φ1.5-11.2 holes/cm2).
∙ Available with a brass plug (the standard is S15C or FCMB310).

Dimensions (mm) and Weights (kg) Plug

L Weight
Nominal size H1 ds s Plug
SY-40EN SY-40H SY-40EN SY-40H
15A 130 130 (_) 61 22 40 _ 1.4 (2.0) 1.9 (_)
20A 150 140 (_) 75 27 56 _ 2.0 (3.0) 2.5 (_) 40A-50A
25A 160 160 (160) 88 34 66 _ 2.7 (4.5) 4.0 (4.5)
32A 180 175 (180) 104 43 76 _ 3.9 (5.5) 5.2 (6.0)
40A 200 190 (200) 115 50 85 R 1/2 5.4 (8.0) 6.7 (8.5)
50A 230 233 (230) 140 61 107 R 1/2 8.6 (10.5) 10.2 (11.0)
65A 290 290 (302) 167 73 125 R 1/2 13.2 (14.0) 15.0 (15.0)
80A 310 316 (330) 190 88 130 R 1/2 16.9 (18.0) 19.0 (20.0)
100A 350 360 (370) 225 108 180 R 3/4 24.3 (27.0) 28.0 (30.0)
125A 400 415 (440) 263 136 200 R 3/4 40.0 42.0 (43.0)
150A 480 495 (520) 315 160 250 R 3/4 66.0 68.0 (71.0)
∙ The values in parentheses are the dimensions and weights of ASME Class 300
flanged.
∙ EN PN16 is only size up to 100A.
∙ The value in parenthesis are the weight of SY-40EN for EN PN25.
65A-150A

4 -27 www.yoshitake.jp
 SY-40EN, 40H

SY-40H, SY-40EN Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ2.5-7.21 holes/cm2, Mesh = 80 mesh

30000 4
20000

Strainer
10000 Nominal
size
7000 150A
5000
125A
3000
100A
2000
80A
1000 65A

700 50A
500 40A
V: Flow rate L/min

300 32A

200
25A
100 20A

70 15A
50

30
20

10
7
5

1
0.001 0.002 0.003 0.005 0.007 0.01 0.02 0.03 0.05 0.07 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -28
 Strainer

SY-2
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

Features
1. High flow-rate marine type with the largest possible
filtration area in view of decrease in flow rate caused by
clogging.

Specifications
Application Steam, Air, Cold and hot water, Other non-dangerous fluids
Maximum pressure 2.0 MPa
Maximum temperature 220°C
Body Ductile cast iron
Material
Screen Stainless steel
Perforation φ2.5-7.21 holes/cm2
Screen
Mesh Standard 80 mesh
Connection JIS 20K FF flanged
· Available with 20 to 100 mesh screen.

Dimensions (mm) and Weights (kg)

Nominal size L H1 ds s Plug Weight

200A 636 470 238 380 R1 167.5

Plug

4 -29 www.yoshitake.jp
 SY-2

SY-2 Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ2.5-7.21 holes/cm2, Mesh = 80 mesh

20000

Nominal size
4
10000 200A

Strainer
7000

5000
V: Flow rate L/min

3000

2000

1000

700

500

0.001 0.002 0.003 0.005 0.007 0.01 0.02 0.03 0.05 0.07 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -30
 Strainer

SY-8,38
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

Features 65A-150A 15A-50A

1. Cast stainless steel body is rust-less, available for a

wide variety of applications such as food, chemical
industries, and oil.
2. High-flow-rate marine type with the largest possible
filtration area in view of decrease in flow rate caused by
clogging.
3. SY-38 is available with 120-200 mesh.

Specifications
Model SY-8 SY-38 (strainer with fine mesh)
Application Steam, Air, Cold and hot water, Oil, Other non-dangerous fluids
Maximum pressure 1.0 MPa
Maximum temperature 150°C (250°C) *
Body Cast stainless steel
Material
Screen Stainless steel
15A to 100A = φ2.5-7.21 holes/cm2 15A to 100A = φ2.5-7.21 holes/cm2
Perforation
Screen 125A to 150A = φ6-2.05 holes/cm2 125A to 150A = φ6-1.80 holes/cm2
Mesh Standard 80 mesh 120 to 200 mesh
Gasket PTFE *
Connection JIS 10K FF flanged
* If the temperature is over 150°C, another material is used for the gasket. Please contact us.
∙ Available with JIS 20K flanged (up to 50A).
∙ Available with 20 to 100 mesh screen (SY-8).
∙ The screen for SY-38, it has become the special specification called screen (P) to prevent the gap between the screen and
the body.
∙ The gasket is PTFE up to 150°C.
SY-8: 15A-50A (Max Temp: 250°C)
SY-38: 15A-40A (Max Temp: 250°C), 50A (Max Temp: 175°C)

4 -31 www.yoshitake.jp
 SY-8, 38

Dimensions (mm) and Weights (kg)

Nominal size L H1 ds s Plug Weight
15A 125 54 20 ( 18) 35 _ 1.8 ( 1.8)
20A 140 68 25 ( 23) 50 _ 2.4 ( 2.4)
25A
32A
160
180
81
92
32 ( 30)
40 ( 38)
60
70
_
_
3.7 ( 3.8)
4.2 ( 4.2)
4
40A 190 104 45 ( 43) 75 _ 5.9 ( 6.1)

Strainer
50A 220 117 56 ( 54) 90 _ 8.1 ( 8.3)
65A 270 162 73 ( 70) 125 (132) R 1/2 13.2 (13.7)
80A 290 185 88 ( 85) 130 (134) R 1/2 17.2 (18.0)
100A 350 222 108 (105) 180 (187) R 1/2 26.0 (27.0)
125A 390 280 140 (137) 200 (207) R 1/2 34.0 (40.0)
150A 440 318 (319) 160 (147) 225 R 1/2 60.0 (64.0)
∙ The values in parentheses are the dimensions and weights of the SY-38.

<SY-8>

Plug
Plug

15A-50A 65A-100A 125A-150A

〈SY-8〉

Plug
Plug

15A-50A 65A-100A 125A-150A

www.yoshitake.jp 4 -32
 SY-8, 38

SY-8 Strainer Pressure Loss Chart (For Water)

∙ Screen: 15A to 100A: Perforation = φ2.5-7.21 holes/cm2, Mesh = 80 mesh
125A and 150A: Perforation = φ6-2.05 holes/cm2, Mesh = 80 mesh

10000 Nominal

4
size
150A
5000
125A
100A
Strainer

80A
65A
1000
V: Flow rate L/min

50A
500 40A
32A

25A
20A
100
15A
50

10
0.001 0.005 0.01 0.05 0.1
ΔP: Pressure loss MPa

SY-38 Strainer Pressure Loss Chart (For Water)

∙ Screen: 15A to 100A: Perforation = φ2.5-7.21 holes/cm2, Mesh = 120 mesh
125A and 150A: Perforation = φ6-1.80 holes/cm2, Mesh = 120 mesh

10000 Nominal
size
5000 150A
125A
100A

80A
1000 65A
V: Flow rate L/min

50A
500
40A
32A

25A
100 20A

15A
50

10
0.001 0.005 0.01 0.05 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

4 -33 www.yoshitake.jp
 Strainer

SY-20,10,10H,10HS
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

Strainer
SY-10

SY-20

SY-10HS
Features
1. High-flow-rate marine type with the largest possible
filtration area in view of decrease in flow rate caused by
clogging.
2. Stainless steel screen with 80 mesh as standard.

Specifications
Model SY-20-10 SY-20-20 SY-10-30
Application Steam, Air, Cold and hot water, Oil, Other non-dangerous fluids
Nominal size 15A-150A 15A-250A
Maximum pressure 1.0 MPa 2.0 MPa 3.0 MPa
Maximum temperature 260°C 260°C *1
Body Cast carbon steel
Material
Screen Stainless steel
Perforation φ6-1.80 holes/cm2
Screen
Mesh Standard 80 mesh
Connection JIS 10K RF flanged JIS 20K RF flanged JIS 30K RF flanged
· Available with 20 to 100mesh screen. (SY-20 is 20 to 60 mesh)
· Available with JIS 10K, 20K flanged for SY-10.
*1 If the temperature is over 260°C, please contact us.

www.yoshitake.jp 4 -34
 SY-20, 10, 10H, 10HS

High-pressure gas approved products

Model SY-10H-10 SY-10H-20 SY-10H-30 SY-10HS-10 SY-10HS-20 SY-10HS-30

Application High-pressure gas, Steam, Cold and hot water, Other non-dangerous fluids
Nominal size 15A-100A

4 Maximum pressure
Maximum temperature
1.0 MPa
350°C
2.0 MPa 3.0 MPa
300°C
1.0 MPa
350°C
2.0 MPa 3.0 MPa
300°C
Body Cast carbon steel Cast stainless steel
Material
Strainer

Screen Stainless steel

Perforation φ6-1.80 holes/cm2
Screen
Mesh Standard 80 mesh
Connection JIS 10K RF flanged JIS 20K RF flanged JIS 30K RF flanged JIS 10K RF flanged JIS 20K RF flanged JIS 30K RF flanged
· Available with 20 to 100 mesh screen.
· When ordering, please inform application, pressure, material and things as follows.
(1) Name of end user (2) Installing place (3) Normal operation pressure and
temperature [Normal operation pressure and temperature for high-pressure
gas means,the maximum pressure and temperature which the gas may
transform into normal gas or liquefied gas under normal operation.]

Dimensions (mm) and Weight (kg)

· SY-20-10, SY-20-20
Plug
Nominal size L H1 ds s Plug Weight
15A 160 104 25 65.5 (56.5) R 3/8 3.0 (3.2)
20A 160 113 30 71.5 (67.5) R 3/8 3.7 (4.0)
SY-20
25A 180 122 33 76.0 (75.0) R 3/8 4.8 (5.9)
32A 240 154 55 105.0(101.0) R 1/2 8.0 (9.3)
40A 240 154 55 105.0(101.0) R 1/2 8.0 (9.3)
50A 260 174 57 112.0(114.5) R 1/2 10.5(13.0)
65A 275 187 74 130.0(124.0) R 1/2 14.3(15.8)
80A 290(360) 241 90 163.0(167.0) R 3/4 18.3(28.0)
100A 362 280 114 187.0 R 3/4 34.2(37.8)
125A 420(415) 330 140 224.5 R 3/4 46.3(57.0)
150A 520 386 184 308.5 R 3/4 75.1(82.8)

· The value in ( ) is dimensions and weights of SY-20-20.

· SY-10-30, SY-10H·10HS (10K·20K·30K)

Nominal size L H1 ds s Plug SY-10H·10HS
15A 180 100 24 70 R 1/2
20A 180 100 24 70 R 1/2
25A 200 113 33 80 R 1/2
32A 240(220) 140(138) 46 100 R 1/2
40A 240(220) 140(138) 46 100 R 1/2
50A 275(250) 170(165) 56 120 R 1/2
65A 310(300) 188(180) 73 125 R 1/2
80A 345(320) 215(210) 88 145 R 1/2
100A 395(380) 275(270) 108 200 R 1/2
125A 470(450) 325(310) 138 230 R 3/4 Plug
150A 520(500) 380(375) 158 280 R 3/4
125A 655(600) 475(470) 208 350 R 3/4
150A 780(745) 580 270 450 R1 SY-10
· SY-10H·10HS size is from 15A to 100A.
· SY-10H·10HS has no plug.
· The value in ( ) is dimensions of SY-10 (10K).

4 -35 www.yoshitake.jp
 SY-20, 10, 10H, 10HS

SY-20 Strainer Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ6.0-1.80 holes/cm2, Mesh = 80 mesh

10000
8000
Nominal size
6000
4000
150A 4
125A

Strainer
2000 100A
80A
1000 65A
V: Flow rate L/min

800
600 50A
400
32 40A

200
25A
20A
100
80
15A
60
40

20

10
0.001 0.002 0.004 0.01 0.02 0.04 0.1
ΔP: Pressure loss MPa

SY-10 Strainer Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ6.0-1.80 holes/cm2, Mesh = 80 mesh

20000 Nominal size

250A
10000
8000 200A
6000
150A
4000 125A
100A
2000
V: Flow rate L/min

80A
1000
800 65A
600 50A
400 40A
32A
200 25A

20A
100
80 15A
60
40

20

10
0.001 0.002 0.004 0.01 0.02 0.04 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -36
 Strainer

SY-13
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

Features
1. Designed for large-diameter piping.

Specifications
Model SY-13
Nominal size 200A-600A
Application Steam, Air, Cold and hot water, Other non-dangerous fluids
Maximum pressure 1.0 MPa
Maximum temperature 220°C
Carbon steel pipes for pressure service and
Body rolled steels for general structure
Material
Screen Stainless steel
Perforation φ6-1.80 holes/cm2
Screen
Mesh Standard 80 mesh
Connection JIS 10K FF flanged
∙ Available with 20 mesh to 100 mesh screen.
∙ Available with rust-proof (hot-dip zinc coating).
∙ Available with stainless steel (SY-13SS).
∙ Available with hinge attachment for screen cover.
∙ Available with JIS 20K flanged, ASNI 150lb, ANSI 300lb.

Dimensions (mm) and Weights (kg)

Nominal size L H1 ds s Plug Weight
200A 580 500 170 510 R 3/4 75
250A 680 565 220 570 R 3/4 115
300A 800 660 250 680 R 3/4 145
350A 930 745 300 776 R 3/4 210
400A 1000 845 340 876 R 3/4 270
450A 1080 890 400 926 R 3/4 400
500A 1200 1045 450 1100 R1 460
550A 1300 1175 500 1250 R1 625
600A 1500 1260 550 1340 R1 820

4 -37 www.yoshitake.jp
 SY-13

L L

Strainer
䱃
䱃s

s
H1
ds
H1

ds
䪻
200A-250A 300A-600A

SY-13 Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ6-1.80 holes/cm2, Mesh = 80 mesh

100000

70000
Nominal size
50000 600A
550A
500A
30000 450A
400A
20000
350A

300A
V: Flow rate L/min

10000
250A
7000
200A
5000

3000

2000

1000

700

500
0.001 0.002 0.003 0.005 0.007 0.01 0.02 0.03 0.05 0.07 0.1
ΔP: Pressure loss MPa

* Please use flow rate 2 m/sec or less.

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -38
 Strainer

SU-20,20S,20C
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

Features
1. The largest possible filtration area in view of flow rate
decrease caused by clogging.
2. Disassembling and cleaning are easy due to a simply SU-20
structured cover that can be fixed and removed simply
by tightening or unfastening a single bolt.
3. Excellent corrosion resistance due to the inner and
outer surface coated with Nylon 11 (SU-20C).

Specifications
∙ SU-20 ∙ SU-20C SU-20C
Cold and hot water, Oil (Kerosine, A and B heavy oil),
Application
Other non-dangerous fluids
Nominal size 20A-150A
Maximum pressure 1.0 MPa
Maximum temperature 220°C
Body Ductile cast iron
Material
Screen Stainless steel
Perforation φ6-1.42 holes/cm2
Screen
Mesh Standard 60 mesh
Connection JIS 10K FF flanged
∙ Available with rust-proof (SU-20).
∙ Available with 20 to 250 mesh screen. Please contact us for 150 mesh or more.
∙ The shape of the cap are different depend on the size.
20A-65A: Square, 80A: Hexagon, 100A,125A: Octagon, 150A: Decagon

SU-20S
∙ SU-20S
Application Cold and hot water, Oil, Oil (kerosine, A, B heavy oil), Other non-dangerous fluids
Nominal size 20A-100A 125A 150A
Maximum pressure 1.0 MPa 0.7 MPa 0.5 MPa
Maximum temperature 80°C
Body Ductile cast iron
Material O-ring NBR
Screen Stainless steel
2
Perforation φ6-1.42 holes/cm
Screen
Mesh Standard 60 mesh
Connection JIS 10K FF flanged
∙ Available with 20 to 150 mesh screen. Please contact us for 150 mesh or more.
∙ Available with O-ring FKM (Viton).
∙ The shape of the cap are different depend on the size.
20A-65A: Square, 80A: Hexagon, 100A,125A: Octagon, 150A: Decagon

4 -39 www.yoshitake.jp
 Strainer

SU-10,10S
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

Strainer
Features
1. The largest possible filtration area in view of decrease in flow rate
caused by clogging. SU-10

2. Disassembling and cleaning are easy due to a simply structured

cover that can be fixed and removed simply by tightening or
unfastening a single bolt.
3. Cast stainless steel body is rust-less, available for a wide variety
of applications such as food, chemical industries, and oil.

Specifications
· SU-10
Cold and hot water, Oil, Oil (Kerosine, A and B heavy
Application
oil), Other non-dangerous fluids
Nominal size 20A-150A
Maximum pressure 1.0 MPa
Maximum temperature 220°C
Body Cast stainless steel SU-10S
Material
Screen Stainless steel
2
Perforation φ6-1.42 holes/cm
Screen
Mesh Standard 60 mesh
Connection JIS 10K FF flanged
· Available with 20 to 150 mesh screen. Please contact us for 150 mesh or more.
· The shape of the cap are different depend on the size.
20A-65A: Square 80A: Hexagon 100A,125A: Octagon 150A: Decagon

· SU-10S
Application Cold and hot water, Oil, Oil (Kerosine, A and B heavy oil), Other non-dangerous fluids
Nominal size 20A-100A 125A 150A
Maximum pressure 1.0 MPa 0.7 MPa 0.5 MPa
Maximum temperature 80°C
Body Cast stainless steel
Material O ring NBR
Screen Stainless steel
2
Perforation φ6-1.42 holes/cm
Screen
Mesh Standard 60 mesh
Connection JIS 10K FF flanged
· Available with 20 to 150 mesh screen. Please contact us for 150 mesh or more.
· Available with O-ring FKM (Viton).
· The shape of the cap are different depend on the size.
20A-65A: Square 80A: Hexagon 100A,125A: Octagon 150A: Decagon

www.yoshitake.jp 4 -40
 SU-10, 10S

Dimensions (mm) and Weights (kg)

B
A
Strainer

H3
H2

䱃s
䱃s

䪻 ds 䪻 ds
H1

H1
Plug Plug
L L

SU-10 ∙ SU-20 ∙ SU-20C SU-10S ∙ SU-20S

Weight
Nominal
Size L H1 H2 H3 A B ds s Plug SU-20 SU-20S
SU-10 SU-10S
20A 175 97.5 54 107.5 87 131 40 70 R 3/8 5.0 5.6
25A 175 97.5 54 107.5 87 131 40 70 R 3/8 6.1 6.7
32A 230 146 67.5 151 115 179 64.5 108 R 3/4 11.1 12.5
40A 230 146 67.5 151 115 179 64.5 108 R 3/4 11.8 13.2
50A 230 156 69.5 153 115 179 64.5 120 R 3/4 12.4 13.8
65A 290 182 70 153.5 134 208 77 140 R1 18.7 20.8
80A 300 197.5 88.5 189 185 249 90 160 R1 23.8 27.1
100A 365 262 118.5 253 220 334 120 210 R 1-1/4 41.3 48.6
125A 425 340.5 134.5 269 248 362 140 270 R 1-1/2 61.4 69.4
150A 505 378 158.5 293 305 414 175 300 R2 98.4 108.3

4 -41 www.yoshitake.jp
 SU-10, 10S

SU-20, SU-10 Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ6-1.42 holes/cm2, Mesh = 60 mesh

Nominal size
4
10000
150A

Strainer
5000
125A

100A

80A

65A
1000

50A
700
40A
32A
V: Flow rate L/min

500

300

25A
200
20A

100

70

50

30

20

0.001 0.005 0.01 0.05 0.1

ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -42
 Strainer

SU-50H,50S,50SS
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

Features SU-50H
1. Standard 316 stainless steel ensures excellent rust-
proof performance.
2. Cover with O-ring ensures superior sealing.
3. Quick-open type, disassembly and screen cleaning are
easy (SU-50S and SU-50SS).
4. Ductile cast iron body, the maximum pressure is 2.0
MPa (SU-50H).
SU-50S
Specifications
Model SU-50H SU-50S SU-50SS
Application Water, Oil Water, Oil, Flushing water
Nominal size 50A, 65A, 80A, 100A, 150A
Maximum pressure 2.0 MPa 1.0 MPa
Maximum temperature 80°C
Ductile cast iron with
Body Ductile cast iron * Epoxy Coating
Material Cover Ductile cast iron Carbon steel Stainless steel
O-ring NBR
Screen Stainless steel (SUS316)
2
Perforation φ2.5-7.21 holes/cm
Screen
Mesh Standard 60 mesh
Connection JIS 20 KRF JIS 10KFF or BSEN PN16
* Available with Epoxy Coating for flushing water.
∙ Available with 20 to 100 mesh screen.

Dimensions (mm) and Weights (kg)

H2 Weight
Size L H1 ds s d do
SU-50H SU-50S SU-50SS SU-50H SU-50S∙50SS
50A 243 166 88 140 144 64.5 108 R 1/4 R 3/4 13.0 13.0
65A 254 166 88 140 144 64.5 108 R 1/4 R 3/4 15.0 15.0
80A 300 204 98 163 165.5 77 140 R 3/8 R1 20.0 20.0
100A 315 230 103 166.5 169 90 160 R 3/8 R1 29.0 28.0
150A 455 385 137 211 214 140 270 R 3/8 R 1-1/2 73.5 72.0
L
L
d
H2
H2
䱃s

䱃s
H1

H1

䪻 ds
䪻 ds

do do

SU-50H SU-50S, 50SS

4 -43 www.yoshitake.jp
 SU-50H, 50S, 50SS

SU-50H,SU-50S Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ2.5-7.21 holes/cm2, Mesh = 60 mesh

10000
Nominal
size
4

Strainer
5000 150A

100A
80A

1000 65A

50A
V: Flow rate L/min

500

100

50

10
0.001 0.005 0.01 0.05 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -44
 Strainer

ST-10
Y type Basket Duplex Straight
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
Strainer

With davit
Features
1. It can replace the screen without using the tool.
2. Significantly compact body set up a screen in the flow
coaxial with the direction of the fluid.
3. Excellent durability since it is subjected to
electrodeposition coating.

Specifications
Model ST-10
Nominal size 125-250A *1
Application Cold and hot water, Oil (Kerosene, Heavy oils A and B), Other non-dangerous fluids
Maximum working pressure 1.0 MPa
maximum temperature 80°C
Connection JIS 10K FF flanged
Installation posture Horizontal or vertical installation *2
Body Ductile cast iron
Material
Screen Stainless steel
Perforation φ8-10P
Screen
Mesh Standard 60 mesh *3
Rust proof Electrodeposition coating

Available with 20 to 150 mesh screen. Please contact us for 150 mesh or more.
*1 Available with davit for 250A.
*2 If fluid flows from bottom to top, it is necessary to install devices such as blow valve. See details in “Piping Example” on
P. -49.
*3 Available with 20, 40, 80 and 100 mesh.

4 -45 www.yoshitake.jp
 ST-10

Dimensions (mm) and Weights (kg)

Screen
Nominal size L H1 H2 Plug Plug Weight
ds Ls
125A 335 132 180 133 154.5 R 1/2 R 3/8 42
150A 385 147 205 158 182 R 1/2 R 3/8 60
200A 470 175 240 208 228 R 1/2 R 3/8 100
250A 550 215 285 258 278 R 1/2 R 3/8 156 4

Strainer
ST-10 Pressure Loss Chart (For Water)
∙ Screen: Perforation = φ8-10P, Mesh = 60 mesh

100000

50000
Nominal
size
250A

200A

150A
10000
125A
V: Flow rate L/min

5000

1000

500

100
0.001 0.005 0.01 0.05 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

www.yoshitake.jp 4 -46
 ST-10

Straight Strainer
How to Detach, Clean the Screen
Warning Completely discharge the pressure inside of the product, piping and equipment prior to
detaching the screen.

4 (1) Remove the thumbscrew. (2) Lift the handles. (3) Rotate the stopper ring by
45°. *1
Strainer

*1 If the stopper ring do not turn

smoothly, lift the handle strongly.
The cover is pushed down and
(4) Detach the cover. *2 *2 To remove the cover, do not lift the the stopper ring can be turned
both handles at the same time but lift smoothly.
them one by one. This will reduce the
resistance of the O-ring and facilitate
to remove the cover. Lift the handle strongly.

(5) Rotate the screen by 45° (6) Pull out the screen. (7) Detach the screen.
Clean the screen using
compressed air or a detergent.

4 -47 www.yoshitake.jp
 ST-10

Assembly

(1) Put the screen into the body. (2) Insert the tabs of the screen
between the grooves on the body.
(3) Rotate the screen by 45°. *3
4
At this time, apply grease to the

Strainer
O-ring or its contact surface.

O-ring contact
surface

O-ring

(5) Rotate the stopper ring until each (4) Install the cover to the body.
handle reaches the stopper. Push in the cover strongly until the Caution
stopper ring tab comes in contact
*3 Rotate the screen until the top (left)
with the body. corner of the triangle embossed
At this time, apply grease to the on the body is aligned with the top
O-ring or its contact surface. (right) corner of the triangle printed
on the screen handle.
If these triangles are not aligned
with each other, the screen may
come off during use.

Align corners of
the triangles.

Stopper

(6) Lower each of the handles

between the stopper and install the
thumbscrew. *4
Warning
*4 Before using the product, make sure to lower each of the handles
between the stopper and install the thumbscrew.
It is very dangerous to use the product in the following conditions.
Failure to follow this notice may cause the cover to come off.

NG The handle is
not engaged NG The handle is not
between the stopper.
with the
stopper by the
thumbscrew.

www.yoshitake.jp 4 -48
 ST-10

Piping Example

4
Strainer

Pressure Pressure
gauge gauge

Fig. 1

1. Clogging condition inside the product can be

known from the differential pressure measured
when pressure gauges are installed before and after
the product (see Fig. 1). Blow valve
2. If fluid flows from bottom to top, install a blow valve
in order to remove scale accumulated at the bottom
of riser pipe (see Fig. 2).
Fig. 2

Precaution for Installation

H mm or more

Nominal size H
125A 330
150A 380
200A 470
250A 560

4 -49 www.yoshitake.jp
 Strainer

SU-20H
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

Strainer
Features
1. The largest possible filtration area in view of flow rate
decrease caused by clogging.
2. Equipped with eyebolts and anchoring leg for safety on
installation.

Specifications
Nominal size 200A
Application Cold and hot water, Oil
Maximum working pressure 1.0 MPa 2.0 MPa
Maximum temperature 80°C
Body Ductile cast iron
Material
Screen Stainless steel
Perforation φ6-1.42 holes/cm2
Screen
Mesh Standard 60 mesh
Connection JIS 10K FF flanged JIS 20K RF flanged
∙ Available with 20 to 100 mesh or only with perforation (when only with perforation, perforation of
φ2.5-7.21 holes/cm2 is used).

Dimensions (mm) and Weights (kg)

Connection Screen
d D C n-h L Weight
flange ds s
JIS 10KFF 200 330 290 12-23 640 200 400 167
JIS 20KRF 200 350 305 12-25 640 200 400 170

www.yoshitake.jp 4 -50
 SU-20H

4
Strainer

SU-20H Pressure Loss Chart (For Water)

∙ Screen: Perforation φ6-1.42 holes/cm2, Mesh = 60 mesh

20000

200A
10000
V: Flow rate L/min

5000

1000
0.001 0.005 0.001 0.05 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

4 -51 www.yoshitake.jp
 Strainer

SU-12
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

Strainer
Features
1. Body material is cast carbon steel. Corresponds to JIS
10·16·20K RF flange and ANSI 150, 300lbRF flange.
2. 60 mesh screen as standard.

Specifications
Model SU-12-10 SU-12-16 SU-12-20 SU-12-150 SU-12-300
Application Cold and hot water, Oil, Other non-dangerous fluids
Nominal size 20A-150A
Maximum pressure 1.0 MPa 1.6 MPa 2.0 MPa 1.0 MPa 2.0 MPa
Maximum temperature 260°C *
Body Cast carbon steel
Material
Screen Stainless steel
Perforation φ6-1.42 holes/cm2
Screen
Mesh Standard 60 mesh
Connection JIS 10K RF flanged JIS 16K RF flanged JIS 20K RF flanged ANSI 150lb RF flanged ANSI 300lb RF flanged
· Available with 20-100 mesh screen. If require over 150 mesh, please contact us.
* If the temperature is more than 260˚C, please contact us.

Dimensions (mm)
· SU-12-10, SU-12-16, SU-12-20, SU-12-150, SU-12-300
Nominal size L H1 H2 ds s Vent plug Drain plug
20A 200 115 65 40 70 R 1/2 R 1/2
25A 200(203) 115 65 40 70 R 1/2 R 1/2
32A 250(253) 163 84 64.5 108 R 1/2 R 3/4
40A 250(256) 153 84 64.5 108 R 1/2 R 3/4
50A 250(262) 173 86 64.5 120 R 1/2 R 3/4
65A 290(306) 200 86 77 140 R 1/2 R1
80A 320(338) 215 105 90 160 R 1/2 R1
100A 380(396) 282 134 120 240 R 1/2 R 1-1/4
125A 450(468) 360 155 140 270 R 3/4 R 1-1/2
150A 540(558) 400 178 175 300 R 3/4 R2
* The value in ( ) is dimensions of SU-12-300.

www.yoshitake.jp 4 -52
 SU-12

Vent plug

4
Strainer

Drain plug

SU-12 Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ6-1.42 holes/cm2, Mesh = 60 mesh
20000
Nominal
size
10000 150A

7000

5000
125A

3000
100A
2000
80A
65A
1000
V: Flow rate L/min

700 50A
40A
32A
500

300
25A
200 20A

100

70

50

30

20

0.001 0.002 0.003 0.005 0.007 0.01 0.02 0.03 0.05 0.07 0.1
ΔP: Pressure loss MPa
Please refer to P. -12 for the information about how to look the chart, and calculating example.

4 -53 www.yoshitake.jp
 Strainer

SU-6,6SS,6AS
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

Strainer
Features
1. Used mainly for cooling water and industrial water for
dust prevention.
2. Designed for large-diameter piping and lighter than cast
iron strainer.

Specifications
Model SU-6 SU-6SS SU-6AS
Application Cold and hot water, Oil, Other non-dangerous fluids
Nominal size 200A-650A
Maximum pressure 1.0 MPa
Maximum temperature 120°C
Body Carbon steel pipe and rolled steel General structual rolled steel and
for carbon steel piping stainless steel Stainless steel
Material
Screen Stainless steel
2
Perforation φ10-0.8 holes/cm
Screen
Mesh Standard 40 mesh
Connection JIS 10K FF flanged
∙ Available with 20 to 100 mesh screen.
∙ Available with rust-proof (hot-dip zinc coating) (SU-6).

Dimensions (mm) and Weights (kg)

Nominal Drain Vent
L A H0 H H1 C h1 ds s
size plug plug
200A 620 273 882 687 440 − − 210 375 R1 R 1/2
250A 660 295 1062 867 570 − − 240 505 R1 R 1/2
300A 710 330 1218 1021 670 − − 290 600 R1 R 1/2
350A 760 350 1306 1103 710 − − 340 640 R1 R 3/4
400A 810 400 1492 1253 810 − − 390 740 R1 R 3/4
450A 860 430 1655 1405 910 − − 440 835 R1 R 3/4
500A 910 455 2195 1945 1400 800 19 490 930 R 1 1/2 R1
550A 960 480 2353 2107 1510 840 23 540 1030 R 1 1/2 R1
600A 1010 510 2538 2237 1590 920 27 590 1100 R 1-1/2 R1
650A 1060 545 2716 2419 1720 970 27 630 1220 R 1-1/2 R1
* Dimensions H1 and H0 are reference values.

www.yoshitake.jp 4 -54
 SU-6, 6SS, 6AS

Vent plug

Vent plug

4
Strainer

Drain plug
Drain plug
200A-450A

500A-650A

SU-6 Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ10-0.8 holes/cm2, Mesh = 40 mesh

Nominal
100000 size
650A
600A
550A
50000 500A
450A
400A

350A

300A

250A
V: Flow rate m3/h

10000
200A

5000

1000

0.001 0.005 0.01 0.05 0.1

ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

4 -55 www.yoshitake.jp
 Strainer

SW-10,10S
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

Strainer
Features
1. Cleanable without stopping the filtrated fluid by
switching the left and right units.
2. Cock lifting mechanism (switching by lifting the cock) SW-10
makes handle operation easy.
3. Since there is no need to install a bypass, piping space
can be minimized (SW-10 and SW-10S).
4. Disassembling and cleaning are easy due to a simply
structured cover that can be fixed and removed simply
by tightening or unfastening a single bolt (SW-10S).

Specifications SW-10S
Application Cold and hot water, Oil, Other non-dangerous fluids
Maximum pressure 1.0 MPa
Maximum temperature 80°C
Body Ductile cast iron
Material Cock Cast bronze
Screen Stainless steel
Perforation φ6-1.42 holes/cm2
Screen
Mesh Standard 60 mesh
Connection JIS 10K FF flanged
∙ Available with stainless steel (Cock SCS14) made.
(Arm for SW-10S is FCD, bolt is SS).
∙ Available with 20 to 150 mesh screen. Please contact us of over 150 mesh.
∙ There may be some acceptable range of leakage since the cock is metal seal.
∙ When switching the cock, the scale and foreign material from the gap between
the cock and body may flow to the outlet side.

Dimensions (mm) and Weights (kg)

Nominal Anchor space Drain Weight
L L1 L2 H1 H Ha A R ds s
size J K h1 plug SW-10 SW-10S
20A 200 100 100 126 280 292 363 180 64.5 108 135 248 12 R1 23.9 26.7
25A 200 100 100 126 280 292 363 180 64.5 108 135 248 12 R1 25.1 27.9
32A 205 102.5 102.5 126 280 292 363 180 64.5 108 135 248 12 R1 26.1 28.9
40A 245 122.5 122.5 134 306 316 390 180 64.5 120 135 275 12 R1 34.0 36.8
50A 245 122.5 122.5 134 306 316 390 180 64.5 120 135 275 12 R1 35.9 38.7
65A 285 130 155 155 356 345 450 240 77 140 160 311 15 R1 52.5 54.6
80A 285 130 155 155 356 345 450 240 77 140 160 311 15 R1 53.0 55.1
100A 385 175 210 230 482 509 644 340 120 210 225 430 19 R 1 117.0 124.3
∙ Dimensions H1, H, K, and A are reference values.
∙ The values of H1 and H are different from those of stainless steel made.

www.yoshitake.jp 4 -56
 SW-10, 10S

A A
䱃
䱃

4
H

Ha
Strainer

䱃s

H1

䱃s
䪻ds

H1
䪻 ds

J 4-䪻 h1
J 4-䪻 h1
L1 L2
K K L1 L2

L L
Drain plug Drain plug
SW-10 SW-10S

SW-10, SW-10S Pressure Loss Chart (For Water)

∙ Screen: Perforation = φ6-1.42 holes/cm2, Mesh = 60 mesh

1000
Nominal size
900
100A
800
700
80A
500 65A

40A-50A
300

200
V: Flow rate L/min

20A-32A

100

70

50

30

20

10
0.001 0.002 0.003 0.005 0.007 0.01 0.02 0.03 0.05 0.07 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look the chart, and calculating example.

4 -57 www.yoshitake.jp
 Strainer

SU-55F
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

Strainer
Features
1. Adopts a vertical structure. Cap can be removed easily
since the cap sealing is O-ring, and it makes the screen
cleaning easy.
2. No need to worry for red water because of bronze body.

Specifications
Application Cold and hot water
Maximum pressure 1.2 MPa
Maximum temperature 60°C
Body Bronze
Material
O ring FKM (Viton)
Screen Stainless steel
Screen
Mesh 60 mesh
Connection JIS Rc screwed

Dimensions (mm) and Weights (kg) Pressure Loss Chart (For Water)
· Screen: Mesh = 60 mesh

Hexagon Bolt 29 100

70

50

Rc 1/2 Rc 1/2
V: Flow rate L/min

30

20

10

∙ Weights: 0.3kg 6
5
0.005 0.007 0.01 0.02 0.03 0.05 0.07 0.1
ΔP: Pressure loss MPa

Please refer to P. -12 for the information about how to look

the chart, and calculating example.

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 Strainer

ST-1
Y type Basket Duplex Temporary
Stainless steel Nylon Carbon steel Easy plug
Pipe end core One-touch With fine mesh Davit

4
25A-65A
Strainer

Features
1. Used for flushing at the time of start-up.
2. Simple strainer which can be attached between flanges
of short pipe.

80A-300A
Specifications
Model ST-1-10 ST-1-20 ST-1-30 ST-1-40
Application Steam, Air, Cold and hot water, Other non-dangerous fluids
Maximum pressure 1.0 MPa 2.0 MPa 3.0 MPa 4.0 MPa
Maximum temperature 220°C
Material Stainless steel
Perforation φ8-0.954 holes/cm2
Screen
Mesh Standard 80 mesh
Connection JIS 10K flanged JIS 20K flanged JIS 30K flanged JIS 40K flanged
· Available with 20 to 250 mesh screen.

Dimension (mm)

25A-65A 80A-300A

* Structure of 150 mesh or more and high pressure products are different.

D
Nominal size d1 d2 H
ST-1-10 ST-1-20 ST-1-30 ST-1-40
25A 24 46 65 71 71 76 76
32A 30 55 65 81 81 85 85
40A 38 73 65 86 86 97 97
50A 48 93 65 101 101 111 111
65A 60 118 65 121 121 137 137
80A 72 36 110 70 131 137 147 147
100A 95 48 135 70 156 162 170 180
125A 118 60 165 70 187 200 205 223
150A 142 72 195 85 217 235 248 262
200A 188 95 250 85 267 280 293 312
250A 235 119 330 85 330 353 357 377
300A 280 141 395 85 375 403 417 431

4 -59 www.yoshitake.jp
 Strainer – Annex
 Disassembly, cleaning and assembly …………………………… 4 -61
 Screen table ………………………………………………………… 4 -64

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4 -60
 Strainer – Annex
Disassembly, cleaning and assembly Strainer

CAUTION Please refer to the manual attached to the product for procedures for installation and operation.

For strainer, when clogged too much by scale etc, fluid passing area decreases, and fluid does not flow
smoothly. Also, it leads to screen damage and make harmful influence on piping system. Be sure to clean
periodically.

4 Y Type Strainer U Type Strainer

Disassembly and Cleaning Disassembly and Cleaning
Strainer

After checking that there is no pressure inside After checking that there is no pressure inside
strainer, remove cap and screen, then clean the strainer, remove hexagonal nut or hexagonal bolt,
strainer by compressed air or detergent. and remove cover and screen, then clean the
strainer by compressed air or detergent.
Assembly Assembly
Clean the gasket contact surface of the body and Clean gasket (O ring) contact surface of the body
cap, then install new gasket to the cap. Finally, set and cap, and set gasket (O ring) to cover. Then, set
screen to ditch of cap, and install it to the body (10 cleaned screen to inside strainer, and install cover
to 80A). and tighten hexagonal nut (hexagonal bolt).
For more than 100A, set screen inside the body at * Bracket ( ) refers to one touch type.
first, then install cap to the body.

SU-20 Exploded view

Hexagonal nut

Stud bolt
Cover

Gasket

Screen Body

Plug

The parts shown in the rectangle boxes

are available as consumable parts.

4 -61 www.yoshitake.jp
 Strainer – Annex

CAUTION Please refer to the manual attached to the product for procedures for installation and operation.

W Type Strainer
Disassembly and Cleaning The Assembly
To clean either left or right strainer, after checking Clean the screen case and gasket(O-ring)contact
arrow of fluid flow, remove cover of closed side, surface of cover, and gasket (O-ring) to cover.
then remove screen and clean the strainer by
compressed air or detergent.
Then, set cleaned screen into screen case, and
install cover and tighten hexagonal nut (hexagonal
4

Strainer
bolt).
* Bracket ( ) refers to one touch type.

* For replacement of cock, replace with body assembly

including assembly of body and cock (do not replace
cock only).

SW-10 Exploded view

Hexagonal bolt

Pin

* Gland cover set

Gland cover

Gasket

Adjusting screw
Hexagonal nut
Washer of Handle
Cover packing

Gasket
Stud bolt
Gasket U packing

Packing case
Hexagonal nut
Screen
Cover
Cock
Driving screw Stud bolt
Hexagonal bolt
*Gasket

Spring lock washer Plate

Plug

Screen

Screen case
Gasket Spring lock washer
Body

Gasket
Hexagonal bolt
Cap Gasket

Plug
Screen case

The parts shown in the rectangle boxes are available as consumable supply.
* Gland cover assembly is available as set parts. Sales as individual parts are only gasket and U-packing.

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 Strainer – Annex

CAUTION Please refer to the manual attached to the product for procedures for installation and operation.

Straight Type Strainer

Disassembly and Cleaning
Clean screen periodically. For disassembly and cleaning procedure, follow P. 4 -47.

4
Strainer

Assembly
For assembly procedure, follow P. 4 -48.

ST-10 Exploded view

Hexagonal bolt
Plug Eye bolt
(for 150-250A only)
Eye bolt

Cover plate
Hexagonal bolt
Handle
Spring washer

Stopper ring

Handle
Hexagonal nut

Cover

O-ring

Body sectional view

Screen
O-ring

Thumb screw
Plug Body
Thumb screw

Plug

The parts shown in the rectangle boxes are available as consumable parts.

4 -63 www.yoshitake.jp
 Strainer – Annex

CAUTION Please refer to the manual attached to the product for procedures for installation and operation.
Screen Table (Y type strainer)
Nominal size
Model
10A 15A 20A 25A 32A 40A 50A 65A 80A 100A 125A 150A 200A 250A 300A 350-450A 500-600A
2
*80 mesh (φ2.5-7.21 hole/cm )
SY-5 2
20-100 mesh (φ2.5-7.21 hole/cm )
SY-6 *60 mesh (φ2.5-7.21 hole/cm2)
SY-9 20-100 mesh (φ2.5-7.21 hole/cm2)
*80 mesh (φ2.5-7.21 hole/cm2)
4
SY-17
20-100 mesh (φ2.5-7.21 hole/cm2)

Strainer
SY-37 120-200 mesh (φ2.5-7.21 hole/cm2)
SY-40 *80 mesh (φ2.5-7.21 hole/cm2)
SY-40H 20-100 mesh (φ2.5-7.21 hole/cm2)
*1
SY-2
*2
2
*60 mesh (φ2.5-7.21 hole/cm )
SY-24 2
20-100 mesh (φ2.5-7.21 hole/cm )
*80 mesh (φ2.5-7.21 hole/cm2) *80 mesh
(6-2.05 hole/cm ) 2

SY-8
20-100 mesh (φ2.5-7.21 hole/cm2) 20-100 mesh
(φ6-2.05 hole/cm ) 2

SY-38 120-200 mesh (φ2.5-7.21 hole/cm2) 120-200 mesh

(φ6-1.80 hole/cm ) 2

*80 mesh (φ6-1.80 hole/cm2)

SY-10 2
20-100 mesh (φ6-1.80 hole/cm )
*80 mesh (φ6-1.80 hole/cm2)
SY-13
20-100 mesh (φ6-1.80 hole/cm2)
*80 mesh (φ6-1.80 hole/cm2)
SY-20
20-80 mesh
* Mark indicates standard screen. *1: *80 mesh (φ2.5-7.21 hole/cm2) *2: 20-100 mesh (φ2.5-7.21 hole/cm2)
Screen Table (U type, W type strainer)
Nominal size
Model
20A 25A 32A 40A 50A 65A 80A 100A 125A 150A 200-450A 500-600A
2
SU-20·20S *60 mesh (φ6-1.42 hole/cm )
SU-10·10S 20-150 mesh (φ6-1.42 hole/cm2)
*60 mesh (φ6-1.42 hole/cm2)
SU-12
20-150 mesh (φ6-1.42 hole/cm2)
SU-50·50H *60 mesh (φ6-1.42 hole/cm2) (except 125A)
SU-50S 20-150 mesh (φ6-1.42 hole/cm2) (except 125A)
*40 mesh (φ10-0.80 hole/cm2)
SU-6
20-100 mesh (φ10-0.80 hole/cm2)
2
SW-10 *60 mesh (φ6-1.42 hole/cm )
SW-10S 20-150 mesh (φ6-1.42 hole/cm2)
* Mark indicates standard screen.
Screen Table (Temporary strainer)
Nominal size
Model
25A 32A 40A 50A 65A 80A 100A 125A 150A 200A 250A 300A
2
*80 mesh (φ8-0.954 hole/cm )
2
ST-1-10 20-120 mesh (φ8-0.954 hole/cm )
150-250 mesh (φ8-0.954 hole/cm2, 30 mesh reinforcement included)
ST-1-20 *80 mesh (φ8-0.954 hole/cm2) *80 mesh (outer perforation φ8-0.954 hole/cm2, inner perforation φ10-0.739 hole/cm2)
ST-1-30 20-120 mesh (φ8-0.954 hole/cm2) 20-120 mesh (outer perforation φ8-0.954 hole/cm2, inner perforation φ10-0.739 hole/cm2)
ST-1-40 150-250 mesh (φ8-0.954 hole/cm2, 30 mesh reinforcement included) 150-250 mesh (outer perforation φ8-0.954 hole/cm2, inner perforation φ10-0.739 hole/cm2, 30 mesh reinforcement included)
* Mark indicates standard screen.
Screen Table (Straight type strainer)
Nominal size
Model
125A 150A 200A 250A
*60 mesh (φ8-10P)
ST-10
20-100 mesh (φ8-10P)
* Mark indicates standard screen.

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