KLT and KLS Series

Tank Top Return Line Filters

23
KLT/KLS Series
Tank Top Return Line Filters
Applications for KLT and KLS Filters
• Mobile Equipment
• Construction, Refuse
• Industrial Power Units
• Machine Tool
• Oil Field
Parker’s new KLS /KLT Tank Top Return
Line Filters are ideally suited for
Mobile and Industrial high to medium
flow return applications, from 30 to
120 GPM. This cost-effective, in-tank
filter series provides maximum flow
and dirt holding capacity for longer
filter element life in a simple, easy-to-
install-and-service assembly.

The generous element size with extensive media area ensures

continuous filtration during cold start up conditions. The inside-to-out flow path with closed bottom
provides additional assurance that all contaminants remain captured during element service removal.
The filters have a pressure rating of 150 psi static, a temperature range of -40˚F to 225˚F, and are available
in a wide range of high-efficiency Microglass III media in 2, 5, 10 and 20 micron for all system cleanliness
requirements. Bypass valves are built into the element to ensure further performance integrity. A new
bypass is provided with each element change.
This rugged design meets the needs for the demanding applications in mobile off -highway and on-
highway applications for construction equipment, logging, refuse vehicles, mining, oil and gas recovery,
marine, and industrial power units.

Feature Advantage Benefit

• Tank top mounted filter • Saves space and reduces mounting • Lower cost, easy to integrate
hardware • KLS model directly retrofits
competitive housing
• Two-piece head and element • No bowl required • Reduced cost and assembly
construction perforated with • Provides excellent flow diffusing, weight
metal outer wrap eliminating aeration • Improved performance
• High efficiency Microglass media • Combines high particle capture • Cleaner fluids, longer lasting with
maximizing filtration area efficiency with high dirt holding fewer service intervals
capacity and lower P • Continuous filtration for cold start
ups
• Lower operating costs
• Element design includes intergral • New bypass with each element • Ensures reliable bypass
disposable bypass valve with change performance
closed bottom end cap • Ensures captured contaminants • No leakage
are removed with each element • Cleaner fluids reduce risk for
change contamination during service
• Magnetic prefiltration • Removes large ferrous • Extends element life
contaminants • Visual indication of component
wear
• Fill and gauge ports • Add fluid through high performance • Initial fluid integrity extends
filter media system component life
• Gauge ports allow for added • Monitor element life
instrumentation

24
KLT/KLS Series
Specifications

Pressure Ratings: Element Condition Indicators: Weights (approximate):

Maximum Allowable Operating Gauge: 0-60 psi color coded KLT-2 . . . . . . . . . .3 lbs. (1.36 kg)
Pressure Switch: SPDT 5A @ 24 VDC and KLT-4 . . . . . . . . . .4 lbs. (1.81 kg)
(MAOP): 150 psi (10.3 bar) 250 VAC KLT(S)-7 . . . . . . .8 lbs. (3.63 kg)
Operating Temperatures: Materials: KLT(S)-8 . . . . . . .10 lbs. (4.54 kg)
-40°F (-40°C) to 225°F (107°C) Head & Cover: Cast Aluminum
Element Burst Rating: Alloy
150 psid (10.3 bar) Bypass Valve: Nylon
Filter Media: Microglass III
Filtration Rating: Element End Caps: Nylon
2, 5, 10 & 20 Microns at Beta > 200

KLT Weld Plate Drawings

B 3.4 (86)

¼“ NPT THREAD
½“ NPT CONDUIT CONNECTION
B
18.0 (457)
WIRE LEADS
COMMON BLACK
N.O. : RED
N.C. : GREEN

1.89 (48)
18 TO 22 PSI
(YELLOW FIELD) 22 TO 60 PSI
(RED FIELD) 1.06
(27)
THREAD A

C 2.08
(53) .55 (14) SQ.

D
HOLE IN RESERVOIR

0 TO 18 PSI ¼“ NPT THREAD

(GREEN FIELD)

Linear Measure: inch (mm)

KLT Filter Model

Dimension
KLT-2/KLT-4 KLT-7/KLT-8 Drawings are for reference only.
A 5/16-18 UNC-2A 3/8-16 UNC-2A Contact factory for current version.

B 5.33 (135) 7.15 (182)

C 1.00 (25) 1.00 (25)
D 4.50/3.75 (114/95) 6.25/5.50 (159/140)

25
KLT Series
Dimensional Drawings
KLT 2 / KLT 4 KLT 7 / KLT 8
2.68 (68) 3.54 (90)

TORQUE: 3 FT-LB (4 N-m)

TORQUE: 7 FT-LB (10 N-m)

4.72 (120)
TYP 6.54 (166)
SAE-16 STRAIGHT TYP.
THREAD O-RING PORT SAE-24 STRAIGHT THREAD
O-RING PORT

.35 (9) DIA. MOUNTING HOLES .43 (11) DIA. MOUNTING HOLES
(4 PLACES) ON 4.96 (126) B.C. (4 PLACES) ON 6.89 (175) B.C.
RECOMMENDED HEAD TO TANK RECOMMENDED HEAD TO TANK
TORQUE: 11 FT-LB (15 N-m) TORQUE: 30 FT-LB (40 N-m)

C
C
MIN. SERVICE CLEARANCE ¼ NPT PLUGGED GAUGE PORT(S)
MIN. SERVICE
¼ NPT PLUGGED (3 PLACES)
CLEARANCE
GAUGE PORT(S)
(3 PLACES)
3.66 (93)
2.83 (72) 1.42 (36)
1.10 (28)

D
RESERVOIR
CUTOUT
D DIAMETER

RESERVOIR
CUTOUT
DIAMETER

Linear Measure: inch (mm)

Drawings are for reference only.
Contact factory for current version.

KLT Filter Model KLT Filter Model

Dimensions Dimensions
KLT-2 KLT-4 KLT-7 KLT-8
C 5.75 (146) 9.50 (241) C 13.00 (330) 19.25 (489)
L 4.16 (106) 7.75 (197) L 11.46 (291) 17.70 (450)
3.6 (93) 5.36 (136)
D D
3.56 (90) 5.26 (133)

26
KLT Series
Dimensional Drawings
KLS 7 / KLS 8

3.38 (86)
.43 (11) DIA. MOUNTING HOLES
(4 PLACES) ON 6.25 (158.8) B.C.
RECOMMENDED HEAD TO
TANK TORQUE: 30 FT-LB (40 N-m)

6.76 (172)

TORQUE: 12 FT-LB (16 N-m)

SAE-24 STRAIGHT THREAD

C O-RING PORTS (BOTH SIDES)
MIN. SERVICE
CLEARANCE

¼ NPT
3.62 (92) PLUGGED
GAUGE PORTS
1.62 (41) (2 PLACES)

D
RESERVOIR
CUTOUT
DIAMETER

Linear Measure: inch (mm)

KLS Filter Model

Dimensions
KLS-7 KLS-8
C 13.00 (330) 19.25 (489)
L 11.46 (291) 17.70 (450) Drawings are for reference only.
5.00 (127) Contact factory for current version.
D
4.80 (122)

27
 KLT Series
Dimensional Drawing
KLT with 2” Port

3.062
REF.
5/16-18 UNC-2B 1/4" NPT 1.531
TAP THRU. 4 PLC'S 3 PLC'S REF.

.844
REF.
1.688
3.190 REF.
REF.

1.46
REF.

Ø.433 4 PLC'S
EQUALLY SPACED 1/2-13 UNC-2B

Drawings are for reference only.

Contact factory for current version.

28
KLT Series
KLT-2 Element Performance
Efficiency 8VeVX^in
Beta Rating Efficiency % EH>9 76G
10000 '*#%

&#*%
2Q 5Q
5Q '%#%
&#'*
1000 99.9
10Q &*#%
&#%%

200 99.5 %#,*

&%#%
100 99.0
20Q %#*%

*#%
20 95.0 %#'*

%#% %#%%
% * &% &* '% '*
2 50.0 <gVbh

0 4 8 12 16 20
Micron Size (c)
Multipass tests run @ 15 gpm to 25 psid terminal - 10 mg/L BUGL

Flow vs. Pressure Loss

AEB
% '% )% +% -% &%%

'%

&#'
&* &#%

%#-
EH>9

76G

&%
%#+

%#)
*
%#'

% %#%
% * &% &* '% '* (%
<EB

29
 KLT Series
KLT-4 Element Performance
Efficiency 8VeVX^in
Beta Rating Efficiency % EH>9 76G
10000 '*#%

&#*%
2Q 5Q
5Q '%#%
&#'*
1000 99.9
10Q &*#% &#%%

200 99.5 %#,*

&%#%
100 99.0
20Q %#*%

*#%
20 95.0 %#'*

%#% %#%%
% * &% &* '% '* (% (* )% )* *%
2 50.0 <gVbh

0 4 8 12 16 20
Micron Size (c)
Multipass tests run @ 30 gpm to 25 psid terminal - 10 mg/L BUGL

Flow vs. Pressure Loss

AEB
% )% -% &'% &+%

'%

&#'

&* &#%

%#-
EH>9

76G

&%
%#+

%#)
*
%#'

% %#%
% &% '% (% )% *%
<EB

30
 KLT/KLS Series
KLT/KLS-7 Element Performance
Efficiency
8VeVX^in
Beta Rating Efficiency % EH>9 76G
10000 '*#%

&#*%
2Q 5Q
5Q '%#%

&#'*
1000 99.9
10Q &*#%
&#%%

200 99.5 %#,*

&%#%
100 99.0
20Q %#*%

*#%
20 95.0 %#'*

%#% %#%%
% '% )% +% -% &%% &'%
<gVbh
2 50.0

0 4 8 12 16 20
Micron Size (c)
Multipass tests run @ 50 gpm to 25 psid terminal - 10 mg/L BUGL

Flow vs. Pressure Loss

AEB
% *% &%% &*% '%% '*% (%% (*%

'%

&#'

&* &#%

%#-
EH>9

76G

&%
%#+

%#)
*
%#'

% %#%
% '% )% +% -% &%%
<EB

31
KLT/KLS Series
KLT/KLS-8 Element Performance
Efficiency
8VeVX^in
Beta Rating Efficiency % EH>9 76G
10000 '*#%

&#*%
2Q 5Q
5Q '%#%

&#'*
1000 99.9
10Q &*#%
&#%%

200 99.5 %#,*

&%#%
100 99.0
20Q %#*%

*#%
20 95.0 %#'*

%#% %#%%
% '% )% +% -% &%% &'% &)%&+% &-% '%%
<gVbh
2 50.0

0 4 8 12 16 20
Micron Size (c)

Multipass tests run @ 70 gpm to 25 psid terminal - 10 mg/L BUGL

Flow vs. Pressure Loss

AEB
% &%% '%% (%% )%%

&%

%#+
-
%#*

+ %#)
EH>9

76G

%#(
)
%#'
'
%#&

% %#%
% '% )% +% -% &%% &'%
<EB

32
KLT/KLS Series
KLT with 2” Port - Element Performance
Efficiency
Beta Rating Ef f ic iency %

10000

2Q
5Q
10Q
1000 99.9

20Q 99.5
200
100 99.0

20 95.0

2 50.0

0 4 8 12 16 20
Micron Siz e (c)

Flow vs. Pressure Loss

LPM

0 100 200 300 400 500 600 700

20.0
150SUS
1.2
16.0
2Q
1.0
PSID

BAR

12.0
0.8
5Q
0.6
8.0
10Q
0.4
4.0
20Q 0.2

0.0 0.0
0 40 80 120 160 200

GPM

33
KLT and KLS Series
Operating and Maintenance Instructions
A. Mounting Parts List
1. Standard mounting.
a. Cut proper size hole in the top of the reservoir. Part
Index Description Quantity
b. Drill holes for studs within the proper bolt circle. Number
c. Set the filter into the cutout hole and secure with 1 Cover Assembly (Includes Cover o-ring)
proper size bolts, nuts and lock washers.
d. Torque nuts in accordance with drawing. KLT2/KLT4 937049 1
2. Mounting procedure using weld plate. KLT7/KLT8 937047 1
a. Rough cut proper size hole in the top of reservoir.
b. Weld the weld plate concentric to the rough cut KLS7/KLS8 937048 1
hole. 2 Cover o-ring
c. Mount the filter onto the studs and secure with
KLT2/KLT4, Nitrile N72239 1
nuts and lock washers.
d. Torque nuts in accordance with drawing. KLT2/KLT4, FKM V72239 1
3. Utilize proper fittings. KLT7/KLT8, Nitrile N72251 1
B. Start-Up KLT7/KLT8, FKM V72251 1
1. Check for and eliminate leaks upon system start-up.
2. Check differential pressure indicator, if installed, to KLS7/KLS8, Nitrile N72251 1
monitor element condition. KLS7/KLS8, FKM V72251 1
C. Service 3 Element (see How to Order page)
1. An element must be serviced when the indicator
indicates service is required. 4 Filter Head (Includes gauge plugs & studs)
NOTE: If the filter is not equipped with an indicator, KLT2/KLT4 (S16) 5841216 1
the element should be serviced according to machine KLT7/KLT8 (S24) 5841224 1
manufacturer’s instructions.
KLS7/KLS8 (S24) 937318 1
KLS7/KLS8 (2” Flange) 942157 1
5 Tank Gasket
1 KLT2/KLT4 108x98x5.5B 1
KLT7/KLT8 152x136x6B 1
KLS7/KLS8 (O-Ring) N72355 (C.F.) 1
Not
Weld Plate
2 Shown

KLT2/KLT4 300041 1
KLT7/KLT8 300042 1
Not
Shown Pressure Switch NS-1C-19R/EL 1
Not
Shown Pressure Gauge 936913 1

3 C.F. = Consult Factory

D. Servicing Dirty Element

1. Shut system down to assure that there is NO PRESSURE
OR FLOW into the filter housing.
2. Remove the filter cover.
3. Remove and discard the contaminated element cartridge.
E. Before Installing a New Element Cartridge
4 1. Clean the magnetic core with a lint-free cloth.
2. Check all seals and replace if necessary.
F. To Install a New Element Cartridge
1. Lubricate all seals.
2. Mount new filter cartridge.
5 3. Re-install the cover.
4. Torque the cover nuts per drawing.
Perform procedures B1 and B2 to ensure no leaks are present.

34
KLT and KLS Series
How to Order
Select the desired symbol (in the correct position) to construct a model code.
Example:

BOX 1 BOX 2 BOX 3 BOX 4 BOX 5 BOX 6 BOX 7 BOX 8

KLT 7 10Q B P G S24 1
BOX 1: Filter Series BOX 4: Seals BOX 7: Ports
Symbol Description Symbol Description Symbol Description
KLT Single port return-line B Nitrile (NBR) KLT-2/4
filter S16 SAE-16 (1 5/16”-12)
V Fluorocarbon
KLS Dual port return-line filter KLT-7/8
(-7 and -8 models only) *NOTE: Nitrile tank gasket always
supplied. S24 SAE-24 (1 7/8”-12)
N24 1 1/2” NPT
BOX 2: Filter Model
BOX 5: Indicator Y32 2” Code 61 Flange Face
Symbol Description
Symbol Description KLS-7/8
2 30 GPM (115 l/m nominal flow)
P No indicator; plugged S24 2 x SAE-24 (1 7/8”-12)
4 50 GPM (190 l/m nominal flow) pressure port(s)
N24 2 x 1 1/2-NPT
7 100 GPM (380 l/m nominal flow) G Pressure gauge, 0-60 psig
S Pressure switch
8 120 GPM (455 l/m nominal flow)

BOX 6: Bypass BOX 8: Options

BOX 3: Media Code Symbol Pressure Setting Symbol Description
Symbol Description
G 25 psid (1.7 bar) 1 None
02Q Microglass III, 2 micron
TP Weld plate (KLT only)
05Q Microglass III, 5 micron
10Q Microglass III, 10 micron
20Q Microglass III, 20 micron
WR Water Removal

Replacement Elements

Element Nitrile Fluorocarbon

Code 2 4 7 8 2 4 7 8
20Q 936967Q 936971Q 936975Q 936979Q 937269Q 937273Q 937277Q 937281Q
10Q 936966Q 936970Q 936974Q 936978Q 937268Q 937272Q 937276Q 937280Q
05Q 936965Q 936969Q 936973Q 936977Q 937267Q 937271Q 937275Q 937279Q
02Q 936964Q 936968Q 936972Q 936976Q 937266Q 937270Q 937274Q 937278Q
WR 937258 937259 937260 937261 C.F. C.F. C.F. C.F.
C.F. = Consult Factory

Global products as identified are offered

worldwide through all Parker locations and
utilize a common ordering code.

35