90-21

90-21 ul
INstallatIoN / operatIoN / maINteNaNce

model

ul listed pressure reducing Valve

The Cla-Val 90-21 Pressure Reducing Valve is a pilot-operated regulator, Turn the adjusting screw out (counterclockwise) to decrease delivery pres-
capable of holding downstream pressure to a predetermined pressure. sure. The pressure should change approximately 27 psi per turn. Only
slight changes in adjustment should be made to avoid damage to equip-
1. special Note: For system protection, on valve sizes 1-1/2" thru 8" a
ment. When the desired setting has been made, tighten jam nut and
minimum 1/2" pressure relief valve is to be installed downstream (sys-
replace cover.
tem side) of the 90-21 Pressure Reducing Valve. For valve sizes 10" and
12" a 3" or larger relief valve is recommended for the downstream side 9. For 1-1/2" thru 8" 90-21 Pressure Reducing Valves the downstream
of the 90-21. Adequate drainage of the relief valve discharge must be pressure relief control recommended set point is 2-8 psi above the CRD
provided. The relief valve should be set above the “no flow” or “dead (3) set point. For 10" and 12" 90-21 Pressure Reducing Valves the rec-
end” shutoff pressure which is recommended at 5 to 10 psi higher than ommended set point is 2 psi above the CRD (3) set point. The relief
the 90-21 set pressure for 1-1/2" thru 8" valve sizes and 2 psi for 10" and valve for the 10" and 12" 90-21 should be installed a recommended min-
12" valve sizes. imum 6 pipe diameters downstream of the 90-21
2. Allow sufficient room around the valve assembly to make adjustments Note: The “no flow” or “dead end” shutoff pressure will be 5 to 11 psi
and for disassembly. above the set pressure.
3. It is recommended that isolation valves be installed on both ends of maintenance
the 90-21 valve to facilitate isolating the valve for start-up, testing and 1. The Cla-Val 90-21 Pressure Reducing Valve requires no lubrication or
preventative maintenance. packing and a minimum of maintenance. However, a periodic inspection
schedule should be established to determine how the fluid handled is
4. beFore tHe ValVe Is INstalled, pIpe lINes sHould be
affecting the efficiency of the valve. Minimum of once per year.
FlusHed oF all cHIps, scale, aNd ForeIGN matter.
2. When servicing the pilot control system, use care to prevent damage.
5. Place the 90-21 valve in the line with flow through the valve in the
If it is necessary to remove fittings or components, be sure they are kept
direction indicated on the inlet nameplate mounted on inlet flange or by
clean and replaced exactly as they were.
arrow on nameplate mounted on side of threaded ends valves. Check
all fittings and hardware for proper makeup and that no apparent dam- 3. Repair and maintenance procedures of the Cla-Val Hytrol Main Valve
age is evident. and pilot control components are included in a more detailed IOM man-
ual. It can be downloaded from our web site (www.cla-val.com) or
6. Cla-Val valves operate with maximum efficiency when mounted in
obtained by contacting a Cla-Val Regional Sales Office.
horizontal piping with the cover UP; however, other positions are accept-
able. Due to size and weight of cover and internal components of six 4. When ordering parts always refer to the catalog number and
inch and larger valves, installation with the cover up is advisable. This stock number on the valve nameplate.
makes periodic inspection of internal parts readily accessible.
start-up and adjustment
symptom probable cause remedy
1. Upon initial start-up and after any valve servicing, it is necessary to
Main valve No pressure at valve inlet Check inlet pressure
follow these steps. fails to open
2. Prior to pressurizing the valve make sure the necessary gauges to Main valve diaphragm assembly Disassemble, clean and polish
inoperative stem, replace detective parts
measure pressure are installed. Gauges should be installed upstream
(inlet) and downstream (outlet) of the valve. Unused ports on main valve Pilot Valve (CRD) not opening:
body can be used for this purpose. 1. No. spring compression 1. Tighten adjusting screw
2. Damaged spring 2. Disassemble and replace
caution: During start-up and test procedures a large volume of water 3. Spring guide not in place 3. Assemble properly.
may be discharged downstream. Check to make sure that the down- 4. Yoke dragging on inlet nozzle 4. Assemble properly
stream venting is adequate to prevent damage to personnel and equip-
ment. Main valve Foreign matter between disc Disassemble main valve,
fails to close and seat or worn disc. Scale on remove matter, clean parts and
3. Close upstream and downstream isolation valves. stem or Diaphragm ruptured replace defective parts
Flow Clean Strainer plugged Remove and clean or replace
4. Slowly open the upstream isolation valve enough to allow the valve
and pilot control system to fill with liquid. Pilot Valve (CRD) remain open:
1. Spring compressed solid 1. Back off adjusting screw
5. Bleed air from the main valve (1) cover and pilot system by slightly
loosening fittings or plugs at all high points until a steady flow of water 2. Mechanical obstruction 2. Disassemble and remove
is observed retighten. It may be necessary to do this more than once. obstruction
3. Worn disc 3. Disassemble remove and
6. Open fully the upstream isolation valve. replace disc retainer assembly
4. Yoke dragging on inlet nozzle 4. Assemble properly
7. Slowly open the downstream isolation valve part way to establish a
low flow rate. 5. Diaphragm damaged or loose 5. Disassemble. replace
diaphragm nut. Leakage from diaphragm and/or tighten nut
there must be liquid flowing through the valve during pressure vent hole in cover
adjustments.
Fails to Air in main valve cover and/or Loosen top cover plug and fit-
Optimum valve performance occurs when pressure setting is done with Regulate tubing tings and bleed air
flow rate as low as practical.
Pilot Valve (CRD) yoke dragging Assemble properly
8. Adjust the CRD Control (3) to desired pressure. To change pressure set- on inlet nozzle
ting, turn the adjusting screw in (clockwise) to increase delivery pressure.
90-21 ul scHematIc
X58c (2) Tube Connector
3
2
Restriction
Plug

Orifice

D1

D2
(NPT)

crd (3)
X140-1
P1 P2

Security Cap
Option
Pressure Setting Adjusting Screw
INLET OUTLET
Adjusting Screw
(Turn Clockwise to Cap
4
Increase Setting)
1 Jam Nut

basIc compoNeNts optIoNal Features
1 100-01 Hytrol (Main Valve) P X141 Pressure Gauge
2 X58C Restriction Fitting D CDC Check Valve
Cover
3 CRD Pressure Reducing Control
4 X46A Flow Clean Strainer
Spring Guide
Cover vent

Hytrol maIN ValVe (1) *Machine Screw Spring

(Fil.Hd) 8 Req’d
PIPE PLUG HEX NUT
8" and Larger
Hex Nut
COVER
FLAT WASHER Belleville Washer

Cover Bolt PIPE PLUG Diaphragm Washer

6" and Smaller
Diaphragm*
FLAT WASHER
COVER BEARING inlet
Yoke
SPRING
(3/8" NPT)
STEM NUT

DIAPHRAGM WASHER
Body and Seat Assy

*DIAPHRAGM Disc Retainer Assy

Gasket*
Plug, Body
DISC RETAINER

Minimum Recommended Flow When Setting Pressure

P1 & P2
*SPACER WASHERS

Valve Size (inch) Min. Flow (GPM)

*DISC

1-1/2 16
2 26
DISC GUIDE

2-1/2 37
3 57
STEM

4 100
6 220
Seat Screw

8 390
SEAT 8" and Larger

10 620
SEAT O-RING 12 880

X58C (2) X46A (4)

STUD
8" and Larger

BODY
PIPE PLUG

*SUGGESTED
(Globe or Angle)

REPAIR PARTS
*Repair Parts

For a more detailed Iom manual go to www.cla-val.com or contact a cla-Val regional sales office.

CLA-VAL 1701 Placentia Ave • Costa Mesa CA 92627 Phone: 949-722-4800 • Fax: 949-548-5441 • E-mail: info@cla-val.com • www.cla-val.com
© Copyright Cla-Val 2019 Printed in USA Specifications subject to change without notice. N-90-21 UL (R-09/2019)
 93480 S

9-21-79
9-24-79
9-4-79
Model 90-21

MGR

HWE
DP
Pressure Reducing Valve
TM
"Underwriters Laboratories Listed"

2-8-16
9-5-19
UL listed model numbers:
90G-21, Globe

RP
AV
90A-21, Angle

REMOVED "(UL APPROVED)" FROM X141 (ECO 25427)

3
2

D1

D2

R
S
P1 P2

5-8-14
DATE

RP
BY
INLET OUTLET

1
Note: For steel and ductile iron 300 CAD REVISION RECORD
valves, use CRDKX [with special
All sizes, KX = Red paint diaphragm washer, yoke, and
*Also 300F only KX = High-strength bolts/studs and nuts screws (30-165) and (30-175)]
DESCRIPTION

NO. BASIC COMPONENTS QTY

1 *100-01KX HYTROL MAIN VALVE 1
2 X58C RESTRICTION ASSEMBLY 1
REMOVE P3 (ECO 24281)

3 CRD PRESSURE REDUCING CONTROL (SEE NOTE) 1

A-N SEE REVISION FILE

4 X46A FLOW CLEAN STRAINER 1

NO. OPTIONAL FEATURES QTY

D CHECK VALVES 2
P X141 PRESSURE GAUGE ASSEMBLY 2
LTR

CLA-VAL Company www.cla-val.com SHEET 1 OF 3

 93480 S
Model 90-21
Pressure Reducing Valve
TM
"Underwriters Laboratories Listed"

Pressure Reducing Feature

Pressure reducing control (3) is a normally open control that responds to main valve outlet pressure changes. An increase in outlet
pressure tends to close control (3) and a decrease in outlet pressure tends to open control (3). This causes main valve cover
pressure to vary and the main valve modulates (opens and closes), maintaining a relatively constant outlet pressure. Pressure
reducing control (3) adjustment: Turn the adjusting screw clockwise to increase the setting.

Optional Features

(D) - Check Valves Valve:

When outlet pressure is higher than inlet pressure, check valve (D1) opens and check valve (D2) closes. This directs the higher
outlet pressure into the main valve cover and the main valve closes.

(P) - Pressure Gauge:

Pressure gauges (P1) and (P2) provide pressure reading in the inlet and outlet connections.

CHECK LIST FOR PROPER OPERATION

System valves open upstream and downstream.
Air removed from the main valve cover and pilot system at all high points.

90G-21 and 90A-21 Approvals

UL Listed
Ductile iron flanged/Grooved valve:
Flanged class: 150F/300F (250, 300 psi max)
Grooved class: 300V (300 psi max) Cast steel valves 300 psi max
(CRD 30-165) (CRD 30-165)

Pattern Size P/C Pattern Size P/C

Globe 1 1/2" - 8" 150F Globe 1 1/2" 300S

Angle 2" - 8" 150F Globe 2" - 6" 300F

Globe 1 1/2" - 6" 300F Angle 1 1/2" 300S

Angle 2" - 6" 300F Angle 2" - 6" 300F

Globe 1 1/2"- 6" 300V

Angle 2" - 4" 300V

CLA-VAL Company www.cla-val.com SHEET 2 OF 3

 93480 S
Model 90-21
Pressure Reducing Valve
TM
"Underwriters Laboratories Listed"

Ductile iron/Cast steel:

Class 150, DI: 250 psi max ULC Listed
Class 150, STL: 285 psi max Ductile iron valve:
Class 300, DI/STL: 300 psi max Class 150: 250 psi max
(CRD 30-175) Class 300: 300 psi max

Pattern Size P/C Pattern Size P/C

Globe 10", 12" 150F Globe 1 1/2" - 12" 150A

Angle 10", 12" 150F Globe 1 1/2"- 3" 300S

Globe 10", 12" 300F Globe 1 1/2" - 12" 300F

Angle 10", 12" 300F Angle 1 1/2" - 12" 150A

Angle 1 1/2"- 3" 300S

Angle 1 1/2" - 12" 300F

CLA-VAL Company www.cla-val.com SHEET 3 OF 3

 100-01 UL
INSTALLATION/OPERATION/MAINTENANCE

MODEL

Hytrol Valve
For Model 90-21 UL Listed Pressure
Reducing Valve
Description
The Model 100-01 Hytrol Valve is the main valve for the
CIa-VaI Model 90-21 Pressure Reducing Control Valve.
It is a hydraulically operated, diaphragm-actuated, globe
or angle pattern valve.

This valve consists of three major components; body, di-

aphragm assembly, and cover. The diaphragm assembly
is the only moving part. The diaphragm assembly
uses a diaphragm of nylon fabric bonded with synthetic
rubber. A synthetic rubber disc, contained on three and
one half sides by a disc retainer and disc guide, forms a
seal with the valve seat when pressure is applied above
the diaphragm. The diaphragm assembly forms a sealed
chamber in the upper portion of the valve, separating op-
erating pressure from line pressure.

Troubleshooting SERVICE SUGGESTIONS

The following trouble shooting information deals strictly with SYMPTOM PROBABLE CAUSE REMEDY
the “Hytrol Valve.” This assumes that everything but the
Fails to Lack of cover chamber Check upstream
main valve itself has been completely isolated, i.e., each close pressure pressure, X46 or
part of the control system is hydraulically blocked from the tubing for obstruction.
Hydro valve. All troubleshooting is possible without remov-
ing the valve from the line or removing the cover. Diaphragm damaged. Replace diaphragm
(See Diaphragm Check,
Steps 1-3)
The Hytrol valve has only one moving part (the diaphragm
and disc assembly). So, there are only three major types of Corrosion or excessive Clean and polish stem
problems to be considered: scale build up on valve Inspect and replace
stem. (See Freedom of any damaged or badly
First: Valve is stuck - that is the diaphragm assembly is not Movement Check, eroded part.
Step 4.)
free to move through a full stroke either from open to close
or vice versa.
Mechanical obstruction. Remove obstruction.
Second: Valve is free to move and can’t close because of Object lodged in valve.
a worn out diaphragm. (See Freedom of Move-
ment Check, Step 4.)
Third: Valve leaks even though it is free to move, and the Worn Disc Replace disc.
diaphragm isn’t leaking. (See Tight Seating
Check, Step 4.)

Fails to Closed upstream and/ Open Valves

open or downstream isolation
valves in main line.

Insufficient line pressure. Check pressure.

Corrosion or excessive Clean and polish stem

scale build up on valve Inspect and replace
stem. (See Freedom of damaged or badly
Movement Check Step 4) eroded part.
 100-01 UL
Diaphragm Check (#1 )
1. Shut off pressure to the 90-21 valve by slowly closing upstream and this is a good reason to believe the diaphragm is either damaged or it
downstream isolation valves. is loose on the stem. In either case, this is sufficient cause to remove
CAUTION: The valve cannot be serviced under pressure. Where the valve cover and investigate the leakage. (See “Maintenance” Sec-
there are no isolation valves, It will be necessary to deactivate the sys- tion for procedure.)
tem.
2. Disconnect or close all pilot control lines to the valve cover and COVER CHAMBER CAPACITY
leave only one fitting in highest point of cover open to atmosphere. (Liquid Volume displaced when valve opens)
3.With the cover vented to atmosphere, slowly open upstream isola-
Valve size (inches) Displacement
tion valve to allow some pressure into the valve body. Observe the
Gallons Liters
open cover tapping for signs of continuous flow. It is not necessary to 1 1/4 .02 .07
fully open isolating valve. Volume in cover chamber capacity chart will 1 1/2 .02 .07
be displaced as valve moves to open position. Allow sufficient time for 2 .03 .12
diaphragm assembly to shift positions. If there is no continuous flow, 2 1/2 .04 .16
you can be quite certain the diaphragm is sound and the diaphragm 3 .08 .30
assembly is tight. If the fluid appears to flow continuously 4 .17 .64
6 .53 2.0
8 1.26 4.8
10 2.51 9.5
12 4.00 15.1
Freedom of Movement Check (#2)
4. Determining the Valve’s freedom of movement can be done after Place marks on this diaphragm assembly lifting tool when the valve
all pressure is removed from the valve. is closed and when manually positioned open. The distance be-
After closing inlet and outlet isolation valves and bleeding pressure tween the two marks should be approximately the stem travel shown
for the valve, check that the cover chamber and the body are tem- in the chart.
porarily vented to atmosphere. Insert fabricated tool into threaded If the stroke is different than that shown, there is a good reason to
hole in top of valve stem, and lift the diaphragm assembly manu- believe something is mechanically restricting the stroke of the valve.
ally. The tool is fabricated from rod that is threaded on one end to The cover must be removed, and the obstruction located and re-
fit valve stem and has a "T" bar handle of some kind on the other moved. The stem should also be checked for scale build-up. (See
end for easy gripping. (See chart in step 4 of "Disassembly" Sec- "Maintenance" Section for procedure.)
tion.)
Freedom of Movement Check (#2)
STEM TRAVEL
(Fully Open to Fully Closed)
5. Test for seat leakage by applying inlet pressure to the cover
Valve Size (inches) Travel (inches)
of the valve, wait until it closes, and then close the isolation
Inches MM Inches MM
1 1/4 32 0.4 10 valve downstream of the Hytrol valve. Install a pressure gauge
1 1/2 40 0.4 10 between the two closed valves. Watch the pressure gauge. If
2 50 0.6 15 the pressure begins to climb, then either the isolation valve is
2 1/2 65 0.7 18 permitting pressure to creep back, or the Hytrol valve is allow-
3 80 0.8 20 ing pressure to go through it. Usually the pressure at the Hytrol
4 100 1.1 28 valve inlet will be higher than on the isolation valve discharge,
6 150 1.7 43 so if the pressure goes up to the inlet pressure, you can be
8 200 2.3 58 sure the Hytrol valve is leaking. If it goes up to the pressure on
10 250 2.8 71 the isolation valve discharge, the Hytrol valve is holding tight,
12 300 3.4 86 and it was just the isolation valve leaking.

Preventative Maintenance

Cla-Val Hytrol valves require no lubrication or packing and a valve use care to remove the controls and tubing. Note and
minimum of maintenance. However, a periodic inspection sched- sketch position of tubing and controls for reassembly. The
ule should be established to determine how the operating condi- schematic on the E-90-21 sheet can be used as a guide when
tions of the system are effecting the valve. The effect of these reassembling pilot system.
actions must be determined by inspection. 3. Remove cover nuts and remove cover. If the valve has been
in service for any length of time, chances are the cover will have
Disassembly to be loosened by driving upward along the edge of the cover
with a dull cold chisel.
Inspection or maintenance can be accomplished without remov-
ing the valve from the line.
1. Close upstream and downstream isolation valves to shut off
all pressure to the valve.
WARNING: Maintenance personnel can be injured and equip-
ment damaged if disassembly is attempted with pressure in the
system.
2. Loosen tube fittings to remove pressure form the valve body
and cover chamber. After pressure had been released from the
100-01 UL
When block and tackle or a power hoist is to be used to lift valve 7. The only part left in the valve body is the seat which ordinarily
cover, insert proper size eye bolt in place of the center cover plug. does not require removal. Careful cleaning and polishing of inside
On 8", 10" and 12" valves only, there are 4 holds where jacking and outside surfaces with 400 wet/dry sandpaper will usually re-
screws maybe inserted to break cover loose from the body and then store the seat’s sharp edge. If, however, it is badly worn and re-
4 eye bolts may be inserted for lifting purposes. Pull cover straight placement is necessary, it can be easily removed.
up to keep from damaging the integral seat bearing and stem.
Seats in valve sizes 1 1/4” through 6” are threaded into the valve
COVER CENTER PLUG SIZE body. They can be removed with accessory X109 Seat Removing
Valve Size Thread Size (NPT)
Tool available from the factory. On 8” and larger valves, the seat is
1 1/4"– 1 1/2" 1/4"
held in place by socket head screws. If upon removal of the screws
2"– 3" 1/2"
the seat cannot be lifted out, it will be necessary to use a piece of
4"– 6" 3/4"
angle or channel iron with a hole drilled in the center. Place it
8"– 10" 1"
12" 1 1/4" across the body so a long stud can be inserted through the cen-
ter hole in the seat and the hole in the angle iron. By tightening the
4. Remove the diaphragm and disc assembly from the valve body. nut a uniform upward force is exerted on the seat for removal.
With smaller valves this can be accomplished by hand, pulling
straight up on the stem so as not to damage the seat bearing. NOTE: Do not lift up on the end of the angle iron as this may force
On large valves, an eye bolt of proper size can be installed in the the integral bearing out of alignment, causing the stem to bind.
stem and the diaphragm assembly can be then lifted with a block
and tackle or power hoist. Take care not to damage the stem or bear- ANGLE OR CHANNEL IRON
ings.  The valve won't work if these are damaged. NUT

VALVE STEM THREAD SIZE

Valve Size Thread Size (UNF Internal) LONG STUD OR BOLT
1 1/4"– 2 1/2" 10 – 32
3"– 4" 1/4 – 28
DO NOT
LIFT

6"– 12" 3/8 – 24

NUT OR BOLT HEAD

5. The next item to remove is the stem nut. Examine the stem
VALVE SEAT

threads above the nut for signs of mineral deposits or corrosion. If

the threads are not clean, use a wire brush to remove as much of the
VALVE BODY

residue as possible. Attach a good fitting wrench to the nut and give Lime Deposits
it a sharp “rap” rather than a steady pull. Usually several blows are
sufficient to loosen the nut for further removal. On the smaller valves, One of the easiest ways to remove lime deposits from the valve
the entire diaphragm assembly can be held by the stem in a vise stem is to dip it in a 5-percent muriatic acid solution just long
equipped with soft brass jaws before removing the stem nut. enough for the deposit to dissolve. This will remove most of the
common types of deposits. CAUTION: USE EXTREME CARE
The use of a pipe wrench or a vise without soft brass jaws scars the WHEN HANDLING ACID, RINSE PARTS IN WATER BEFORE
fine finish on the stem. No amount of careful dressing can restore the HANDLING. If the deposit is not removed by acid, the a fine grit
stem to its original condition. Damage to the finish of the stem can (400) wet or dry paper can be used with water.
cause the stem to bind in the bearings and the valve will not open or
close. Inspection of Parts

6. After the stem nut has been removed, the diaphragm assembly After the valve has been disassembled, each part should be ex-
breaks down into its component parts. Removal of the disc from the amined carefully for signs of wear, corrosion, or any other abnor-
disc retainer can be a problem if the valve has been in service for a mal conditions. Usually, it is a good idea to replace the rubber
long time. Using two screwdrivers inserted along the outside edge parts (diaphragm and disc) unless they are free of signs of wear.
of the disc usually will accomplish its removal. Care should be taken Any other parts which appear doubtful should be replaced.
to preserve the spacer washers in water, particularly if no new ones
are available for re-assembly.

Reassembly to hold the diaphragm assembly up while stretching the di-

1. Reassembly is the reverse of the disassembly procedure. If a new aphragm over the studs.
disc has been installed, it may require a different number of spacer 4. Put spring in place and replace cover. Maker sure diaphragm
washers to obtain the right amount of "grip" on the disc. When the di- is laying smooth under cover.
aphragm assembly has been tightened to a point where the di- 5. Tighten cover nuts firmly using a cross-over pattern until all nuts
aphragm cannot be twisted, the disc should be compressed very are tight.
slightly by the disc guide. Excessive compression should be avoided.
Use just enough spacer washers to hold it firmly. Test Procedure After Valve Assembly
2. Make sure the stem nut is made up very tight. Attach a good fit- 1. Check the diaphragm assembly for freedom of movement by
ting wrench to the nut and give it a sharp "rap" rather than a steady inserting a rod into the threaded hole in the top of the valve
pull. Usually several blows are sufficient to tighten the nut for final stem and lifting the diaphragm assembly manually. The di-
tightening. Failure to do so could allow the diaphragm to pull loose aphragm assembly should move freely without any signs of
and tear when subjected to pressure. sticking or grabbing. (See "Freedom of Movement Check" sec-
3. Carefully install the diaphragm assembly by lowering the stem tion.
through the seat bearing. Take care not to damage the stem or bear- 2. Re-install the pilot system and tubing exactly as it was prior to
ing. Line up the diaphragm holes with the stud or bolt holes on the removal.
body. On larger valves with studs, it may be necessary 3. Follow steps under "Start-Up and Adjustment" Section in N-
90-21 UL Sheet.
100-01 UL 1 6

25
17
5
2
7
24 8 9
10

INLET OUTLET
3

4
TOP VIEW 14 16

PARTS LIST
GLOBE PATTERN

Item Description
1. Pipe Plug
2. Drive Screws (for nameplate)
3. Hex Nut (8” and larger)
4. Stud (8” and larger) 26
5. Cover Bearing 27
6. Cover 9
7. Stem Nut
8. Diaphragm Washer
9. Diaphragm
10. Spacer Washers
11. Disc Guide 12
12. Disc Retainer
13. Disc
14. Stem 15
15. Seat
OUTLET
16. Body
14
17. Spring
22. Socket Head Screws (8” and larger)
23. Seat O-Ring
24. Hex Head Bolt (1 1/4” thru 6”) 16
25. Nameplate
26. Upper Spring Washer (Epoxy coated valves only)
27. Lower Spring Washer (Epoxy coated valves only) INLET
28. Cover Bearing Housing (16” only) ANGLE PATTERN
29. Cover O-Ring (16’” only)
30. Hex Bolt (16” only)
31. Pipe Cap (16” only)

13

12

13 22

14
10
11
15

23

14

23

1 1/4" - 6" SEAT DETAIL 8" - 24" SEAT DETAIL

When ordering please specify: All nameplate data, Description, Item number

CLA-VAL 1701 Placentia Ave • Costa Mesa CA 92627 Phone: 949-722-4800 • Fax: 949-548-5441 • E-mail: info@cla-val.com • www.cla-val.com
© Copyright Cla-Val 2019 Printed in USA Specifications subject to change without notice. N-100-01 UL (R-09/2019)
 90-21/690-21 UL
INSTALLATION / OPERATION / MAINTENANCE

MODEL

Performance Characteristics of UL listed

90-21 Pressure Reducing Valves
VALVE SIZE TEST DESCRIPTION UL TEST RESULTS

DEAD-END SHUT-OFF CHARACTERIS- WITH OUTLET PRESSURE CONTROL SETPOINT AT 30 PSI & INLET PRES-
TICS; RECORD OUTLET PRESSURE AT SURES FROM 75 TO 300 PSI, THE RECORDED OUTLET PRESSURE AT
ZERO FLOW RANGED BETWEEN 40 TO 45 PSI
ZERO FLOW WHEN FLOW STARTS AT 80
1-1/2" GLOBE
GPM & IS REDUCED UNTIL FLOW IS
WITH OUTLET PRESSURE CONTROL SETPOINT AT 165 PSI & INLET PRES-
ZERO SURE AT 300 PSI, THE RECORDED OUTLET PRESSURE AT ZERO FLOW
WAS 175 PSI

WITH OUTLET PRESSURE CONTROL SETPOINT AT 30 PSI & INLET PRES-

DEAD-END SHUT-OFF CHARACTERIS- SURES FROM 75 TO 300 PSI, THE RECORDED OUTLET PRESSURE AT
TICS; RECORD OUTLET PRESSURE AT ZERO FLOW RANGED BETWEEN 38 TO 41 PSI
1-1/2" GLOBE ZERO FLOW WHEN FLOW STARTS AT 80
GPM & IS REDUCED UNTIL FLOW IS WITH OUTLET PRESSURE CONTROL SETPOINT AT 165 PSI & INLET PRES-
ZERO SURE AT 300 PSI, THE RECORDED OUTLET PRESSURE AT ZERO FLOW
WAS 175 PSI

WITH OUTLET PRESSURE CONTROL SETPOINT AT 30 PSI & INLET PRES-

DEAD-END SHUT-OFF CHARACTERIS- SURES FROM 75 TO 300 PSI, THE RECORDED OUTLET PRESSURE AT
TICS RECORD OUTLET PRESSURE AT ZERO FLOW RANGED BETWEEN 40 TO 45 PSI
2" GLOBE ZERO FLOW WHEN FLOW STARTS
AT125GPM & IS REDUCED UNTIL FLOW WITH OUTLET PRESSURE CONTROL SETPOINT AT 165 PSI & INLET PRES-
IS ZERO SURE AT 300 PSI, THE RECORDED OUTLET PRESSURE AT ZERO FLOW
WAS 175 PSI

WITH OUTLET PRESSURE CONTROL SETPOINT AT 30 PSI & INLET PRES-

DEAD-END SHUT-OFF CHARACTERIS- SURES FROM 75 TO 300 PSI, THE RECORDED OUTLET PRESSURE AT
TICS RECORD OUTLET PRESSURE AT ZERO FLOW RANGED BETWEEN 35 TO 38 PSI
3" GLOBE ZERO FLOW WHEN FLOW STARTS AT
275 GPM & IS REDUCED UNTIL FLOW IS WITH OUTLET PRESSURE CONTROL SETPOINT AT 165 PSI & INLET PRES-
ZERO SURE AT 300 PSI, THE RECORDED OUTLET PRESSURE AT ZERO FLOW
WAS 175 PSI

WITH OUTLET PRESSURE CONTROL SETPOINT AT 30 PSI & INLET PRES-

DEAD-END SHUT-OFF CHARACTERIS- SURES FROM 75 TO 300 PSI, THE RECORDED OUTLET PRESSURE AT
TICS; RECORD OUTLET PRESSURE AT ZERO FLOW RANGED BETWEEN 37 TO 42 PSI
4" GLOBE ZERO FLOW WHEN FLOW STARTS AT
500 GPM & IS REDUCED UNTIL FLOW IS WITH OUTLET PRESSURE CONTROL SETPOINT AT 165 PSI & INLET PRES-
ZERO SURE AT 300 PSI, THE RECORDED OUTLET PRESSURE AT ZERO FLOW
WAS 172 PSI

WITH OUTLET PRESSURE CONTROL SETPOINT AT 30 PSI & INLET PRES-

DEAD-END SHUT-OFF CHARACTERIS- SURES FROM 75 TO 300 PSI, THE RECORDED OUTLET PRESSURE AT
TICS; RECORD OUTLET PRESSURE AT ZERO FLOW RANGED BETWEEN 35 TO 40 PSI
6" GLOBE ZERO FLOW WHEN FLOW STARTS AT
700 GPM & IS REDUCED UNTIL FLOW IS WITH OUTLET PRESSURE CONTROL SETPOINT AT 165 PSI & INLET PRES-
ZERO SURE AT 300 PSI, THE RECORDED OUTLET PRESSURE AT ZERO FLOW
WAS 170 PSI
WITH OUTLET PRESSURE CONTROL SETPOINT AT 29 PSI & INLET PRES-
DEAD-END SHUT-OFF CHARACTERIS- SURES FROM 75 TO 300 PSI, THE RECORDED OUTLET PRESSURE IS
TICS; RECORD OUTLET PRESSURE AT EQUAL TO AN ACCEPTABLE PLUS OR MINUS 10%
8" GLOBE ZERO FLOW WHEN FLOW STARTS AT
700 GPM & IS REDUCED UNTIL FLOW IS WITH OUTLET PRESSURE CONTROL SETPOINT AT 165 PSI & INLET PRES-
ZERO SURE AT 300 PSI, THE RECORDED OUTLET PRESSURE AT ZERO FLOW IS
EQUAL TO AN ACCEPTABLE PLUS OR MINUS 15 PSI OF SETPOINT.

WITH OUTLET PRESSURE CONTROL SETPOINT FROM 30 PSI TO 175

PSI & INLET PRESSURES FROM 75 TO 300 PSI, THE RECORDED
DEAD-END SHUT-OFF CHARACTERIS-
OUTLET PRESSURE IS EQUAL TO AN ACCEPTABLE PLUS OR MINUS
TICS; RECORD OUTLET PRESSURE AT
10% OF SETPOINT.
10" & 12" GLOBE ZERO FLOW WHEN FLOW STARTS AT
800 GPM & IS REDUCED UNTIL FLOW IS
WITH OUTLET PRESSURE CONTROL SETPOINT AT 175 PSI & INLET
ZERO.
PRESSURE AT 300 PSI THE RECORDED OUTLET AT ZERO FLOW IS
EQUAL TO AN ACCEPTABLE PLUS OR MINUS 15 PSI OF SETPOINT.

CLA-VAL 1701 Placentia Ave • Costa Mesa CA 92627 Phone: 949-722-4800 • Fax: 949-548-5441 • E-mail: info@cla-val.com • www.cla-val.com
© Copyright Cla-Val 2019 Printed in USA Specifications subject to change without notice. N-90-21 UL Performance Characteristics (R-09/2019)
 1-1/2" 90G-21
OBSERVED FLOW RATE WHEN INLET PRESSURE
DROPS BELOW OUTLET PRESSURE SET POINT
200

175
Inlet @ 155 psi; Outlet Setting @165 psi
150
OUTLET PRESSURE (PSI)

125

100
Inlet @ 100 psi; Outlet Setting @165 psi
75

50
Inlet @ 50 psi; Outlet Setting @165 psi
25
Inlet @ 20 psi; Outlet Setting @ 30 psi
0
0 50 100 150 200
FLOW (GPM)

1-1/2"
1 90A-21
OBSERVED FLOW RATE WHEN INLET PRESSURE
DROPS BELOW OUTLET PRESSURE SET POINT
175

150
Inlet @ 155 Outlet Setting @ 165 psi
OUTLET PRESSURE (PSI)

125

100
Inlet @ 100 psi; Outlet Setting @ 165 psi
75

50
Inlet @ 50 psi; Outlet Setting @ 165 psi
25
Inlet @ 20 psi; Outlet Setting @ 30 psi
0
0 50 100 150 200
FLOW (GPM)

2" 90G-21
OBSERVED FLOW RATE WHEN INLET PRESSURE
DROPS BELOW OUTLET PRESSURE SET POINT
200

175
Inlet @ 155 psi; Outlet Setting @ 165 psi
150
OUTLET PRESSURE (PSI)

125

100
Inlet @ 100 psi; Outlet Setting @ 165 psi

75

50
Inlet @ 50 psi; Outlet Setting @ 165 psi
25
Inlet @ 20 psi; Outlet Setting @ 30 psi
0
0 50 100 150 200 250 300
FLOW (GPM)
 3" 90G-21
OBSERVED FLOW RATE WHEN INLET PRESSURE
DROPS BELOW OUTLET PRESSURE SET POINT
175

Inlet @ 155 psi; Outlet Setting @ 165 psi

150
OUTLET PRESSURE (PSI)

125

Inlet @ 100 psi; Outlet Setting @ 165 psi

100

75

Inlet @ 50 psi; Outlet Setting @ 165 psi

50

25
Inlet @ 20 psi; Outlet Setting @ 30 psi
0
0 100 200 300 400 500 600
FLOW (GPM)

4" 90G-21
OBSERVED FLOW RATE WHEN INLET PRESSURE
DROPS BELOW OUTLET PRESSURE SET POINT
200

175

Inlet @ 155 psi; Outlet Setting @ 165 psi

150
OUTLET PRESSURE (PSI)

125

100
Inlet @ 100 psi; Outlet Setting @ 165 psi
75

50
Inlet @ 50 psi; Outlet Setting @ 165 psi
25
Inlet @ 20 psi; Outlet Setting @ 30 psi

0
0 100 200 300 400 500 600 700 800 900 1000 1100
FLOW (GPM)

6" 90G-21
OBSERVED FLOW 6RATE WHEN INLET PRESSURE
DROPS BELOW OUTLET PRESSURE SET POINT
175
Inlet @ 155 psi Outlet Setting @ 165 psi
150
OUTLET PRESSURE (PSI)

125

Inlet @ 100 psi Outlet Setting @ 165 psi

100

75

Inlet @ 50 psi; Outlet Setting @ 165 psi

50

25

Inlet @ 20 psi; Outlet Setting @ 30 psi

0
0 250 500 750 1000 1250 1500
FLOW (GPM)
 8" 90G-21
OBSERVED FLOW RATE WHEN INLET PRESSURE
DROPS BELOW OUTLET PRESSURE SET POINT
AT VARIOUS INLET PRESSURES
A
200

175 Inlet @ 200 psi; Outlet Setting @ 165 psi

150
OUTLET PRESSURE (PSI)

Inlet @ 150 psi; Outlet Setting @ 120 psi

125

100

75 Inlet @ 100 psi; Outlet Setting @ 90psi

50
Inlet @ 50 psi; Outlet Setting @ 30 psi
25

0
0 200 400 600 800 1000 1200 1400 1600
FLOW (GPM)

10"
1 90G-21
OBSERVED FLOW RATE WHEN INLETSET
PRESSURE
DROPS BELOW OUTLET PRESSURE SET POINT
OUTLET PRESSURE POINT

200

175
Inlet @ 165 psi; Outlet Setting @ 175 psi

150
OUTLET PRESSURE (PSI)

Inlet @ 155 psi; Outlet Setting @ 165 psi

125

100

75

Inlet @ 50 psi; Outlet Setting @ 175 psi

50

25 Inlet @ 20 psi; Outlet Setting @ 30 psi

0
0 250 500 750 1000 1250 1500 1750
FLOW (GPM)

12"
1 90G-21
OBSERVED FLOW RATE WHEN INLET PRESSURE
DROPS BELOW OUTLET PRESSURE SET POINT
200

175
Inlet @ 165 psi; Outlet Setting @ 175 psi
150
OUTLET PRESSURE (PSI)

Inlet @ 155 psi; Outlet Setting @ 165 psi

125

100

75
Inlet @ 50 psi; Outlet Setting @ 175 psi
50

25
Inlet @ 20 psi; Outlet Setting @ 30 psi

0
0 250 500 750 1000 1250
FLOW (GPM)
 CRD
INSTALLATION / OPERATION / MAINTENANCE

MODEL

Pressure Reducing Control

SYMPTOM PROBABLE CAUSE REMEDY

No spring compression Tighten adjusting screw

Fails to open Damaged spring Disassemble and replace

when deliver pres-
sure lowers Spring guide (8) is not in place Assemble properly

Disassemble and reassemble

Yoke dragging on inlet nozzle
properly (refer to Reassembly)

Spring compressed solid Back off adjusting screw

Disassemble and reassemble

Fails to close Mechanical obstruction
properly (refer to Reassembly)
when delivery
pressure rises Disassemble remove and
Worn disc
replace disc retainer assembly
Disassemble and reassemble
Yoke dragging on inlet nozzle
properly (refer to Reassembly)
DESCRIPTION Damaged diaphragm Disassemble and replace
Leakage from
The Cla-Val Model CRD Pressure Reducing Control automatically reduces
cover vent hole
a higher inlet pressure to a lower outlet pressure. It is a direct acting, Loose diaphragm nut Remove cover and tighten nut
spring loaded, diaphragm type control that operates hydraulically or pneu-
matically. It may be used as a self-contained valve or as a pilot control for
a Cla-Val main valve. It will hold a constant downstream pressure within MAINTENANCE
very close pressure limits.
Disassembly
OPERATION To disassemble follow the sequence of the item numbers assigned to
The CRD Pressure Reducing Control is normally held open by the force of parts in the sectional illustration.
the compression spring above the diaphragm; and delivery pressure acts Reassembly
on the underside of the diaphragm. Flow through the valve responds to
Reassembly is the reverse of disassembly. Caution must be taken to
changes in downstream demand to maintain a pressure.
avoid having the yoke (17) drag on the inlet nozzle of the body (18).
INSTALLATION Follow this procedure:
The CRD Pressure Reducing Control may be installed in any position. 1. Place yoke (17) in body and screw the disc retainer
There is one inlet port and two outlets, for either straight or angle installa- assembly (16) until it bottoms.
tion. The second outlet port can be used for a gage connection. A flow
2. Install gasket (14) and spring (19) for 2-30 and 2-6.5 psi
arrow is marked on the body casting.
ADJUSTMENT PROCEDURE range onto plug (13) and fasten into body. Disc retainer
must enter guide hole in plug as it is assembled. Screw
The CRD Pressure Reducing Control can be adjusted to provide a deliv-
the plug in by hand. Use wrench to tighten only.
ery pressure range as specified on the nameplate.
Pressure adjustment is made by turning the adjustment screw to vary the 3. Place diaphragm (12) diaphragm washer (11) and belleville
spring pressure on the diaphragm. The greater the compression on the washer (20) on yoke. Screw on hex nut (10).
spring the higher the pressure setting. 4. Hold the diaphragm so that the screw holes in the
1. Turn the adjustment screw in (clockwise) to increase diaphragm and body align. Tighten diaphragm nut with
delivery pressure. a wrench. At the final tightening release the diaphragm
2. Turn the adjustment screw out (counter-clockwise) to and permit it to rotate 5° to 10°. The diaphragm holes
decrease the delivery pressure. should now be properly aligned with the body holes.
3. When pressure adjustment is completed tighten jam nut on To check for proper alignment proceed as follows:
adjusting screw and replace protective cap. Rotate diaphragm clockwise and counterclockwise as far as possible.
4. When this control is used, as a pilot control on a Diaphragm screw holes should rotate equal distance on either side of
Cla-Val main valve, the adjustment should be made body screw holes ±1/8".
under flowing conditions. The flow rate is not critical, Repeat assembly procedure until diaphragm and yoke are properly
but generally should be somewhat lower than normal aligned. There must be no contact between yoke and body nozzle
in order to provide an inlet pressure several psi higher during its normal movement. To simulate this movement hold body
than the desired setting and diaphragm holes aligned. Move yoke to open and closed posi-
tions. There must be no evidence of contact or dragging.
The approximate minimum flow rates given in the table are for the main valve 5. Install spring (9) with spring guide (8).
on which the CRD is installed.
6. Install cover (5), adjusting screw (2) and nut (3), then cap (1).
Valve Size 1 1/4" -3" 4"-8" 10"-16"

Minimum Flow GPM 1-2 4-15 35-95

CLA-VAL 1701 Placentia Ave • Costa Mesa CA 92627 Phone: 949-722-4800 • Fax: 949-548-5441 • E-mail: info@cla-val.com • www.cla-val.com
© Copyright Cla-Val 2019 Printed in USA Specifications subject to change without notice. N-CRD (R-01/2019)
 CRD
PARTS LIST

Pressure Reducing Control

(Bronze Body with 303SS Trim)
2 1 20

PRESSURE SETTING 18
3
ADJUSTING SCREW
(TURN CLOCKWISE
5 17
TO INCREASE SETTING

5 3/8 9
cover vent
16 SECTION B-B
CLOSED POSITION
B 10
19 15
11
Body and Disc
Retainer Detail
inlet 12
for Low Pressure
Control
17 A A
1 13/16 3/8" NPT

18 4

16
7 6
B
13 14
Item Description Material Part Number
3 1/8

1 Cap PL 67628J
SECTION A-A
OPEN POSTION

2 Adjusting Screw BRS 7188201D

FOR HIGH PRESSURE CONTROL

3 Jam Nut (3/8-16) SS 6780106J

4* Machine Screw (Fil.Hd.) 8 Req'd 303 6757821B
Size Stock Adjustment Range
5 Cover BRS C2544K
(inch) Number psi Ft of Water 6 Nameplate Screw SS 67999D
3/8 7194307A 2 - 6.5 4.5 - 15 7 Nameplate BRS C0022001G
3/8 7194308J 2 - 30 4.5 - 69 8 Spring Guide 302 71881H
3/8 7194303K 15 - 75 35 - 173 Spring Guide (20 - 105 psi) 303 205620F
3/8 7194311C 20 - 105 46 - 242 9 Spring (15-75 psi) CHR/VAN 71884B
3/8 7194304H 30 - 300 69 - 692 Spring (2 - 6.5 psi) SS 82575C
Factory Set Pressure PSI per Turn* Spring (2 - 30 psi) SS 81594E
2 - 6.5 set @ 3.5 psi .61 Spring (20 - 105 psi) 316 20632101E
2 - 30 set @ 10 psi 3.0 Spring (30 - 300 psi) CHR/VAN 71885J
15 - 75 set @ 20 psi 9.0 10 Hex Nut 303 71883D
20 - 105 set @ 60 psi 12.0 11 Diaphragm Washer 302 71891G
30 - 300 set @ 60 psi 27.0 12* Diaphragm NBR C6936D
13 Plug, Body BRS V5653A
*Approximate-Final Adjustment should be
with a pressure gauge and with flow. 14* Gasket Fiber 40174F
15 Plug BRS 6766003F
16* Disc Retainer Assy. (2 - 30 psi) SS/Rub C8348K
Disc Retainer Assy. (15 - 75 psi) SS/Rub 37133G
When ordering parts specify: Disc Retainer Assy. (20 - 105 psi) SS/Rub 37133G
Disc Retainer Assy. (30 - 300 psi) SS/Rub 37133G
• All nameplate data
17 Yoke VBZ V6951H
• Item Description
• Item number 18 Body & 1/4" Seat Assy BR/SS 8339702G
19* Bucking Spring (2 - 6.5 psi)(2 - 30psi) 302 V0558G
20 Belleville Washer STL 7055007E
* Repair Kit (No Bucking Spring) Buna®-N 9170003K
* Repair Kit (with Bucking Spring) Buna®-N 9170002B
*SUGGESTED REPAIR PARTS

CLA-VAL 1701 Placentia Ave • Costa Mesa CA 92627 Phone: 949-722-4800 • Fax: 949-548-5441 • E-mail: info@cla-val.com • www.cla-val.com
© Copyright Cla-Val 2019 Printed in USA Specifications subject to change without notice. PL-CRD (R-09/2019)
 INSTALLATION / OPERATION / MAINTENANCE

MODEL
X46
Flow Clean Strainer
• Self Scrubbing Cleaning Action
• Straight Type or Angle Type

X46A Straight The Cla-Val Model X46 Strainer is designed to prevent passage of
foreign particles larger than .015". It is especially effective against
such contaminant as algae, mud, scale, wood pulp, moss, and root
fibers. There is a model for every Cla-Val. valve.

X46B Angle The X46 Flow Clean strainer operates on a velocity principle utilizing
the circular "air foil" section to make it self cleaning. Impingement of
particles is on the "leading edge" only. The low pressure area on the
downstream side of the screen prevents foreign particles from clog-
ging the screen. There is also a scouring action, due to eddy cur-
rents, which keeps most of the screen area clean.

Dimensions (In Inches)

Male X46A Straight Type A (In Inches)
SAE Width Across Flats Pipe
C Male B A (NPT) B (NPT) D E F G I
B Pipe
H 1/8 1/8 1-3/4 3/4 1/2 1/2 1/4
G I 1/4 1/4 2-1/4 1 3/4 3/4 3/8
I
A 3/8 3/8 2-1/2 1 7/8 7/8 1/2
E
X46B E Female F 3/8 1/2 2-1/2 1-1/4 1/2 7/8 3/4
D Pipe D
X46A 1/2 1/2 3 1-1/4 1 1-1/8 3/4
X46 Angle Type B (In Inches)
3/8 3/4 3-3/8 2 1/2 1 7/8
B(NPT) C(SAE) D E H I
3/4 3/4 4 2 1 1-1/2 7/8
1/8 1/4 1-3/8 5/8 7/8 1/4 When Ordering, 3/8 1 4-1/4 2-3/4 1/2 1-3/8 7/8
1/4 1/4 1-3/4 3/4 1 3/8 Please Specify: 1 1 4-1/2 2-3/4 1-1/4 1-3/4 7/8
3/8 1/4 2 7/8 1 1/2 • Catalog Number X46
1/2 1 4-1/4 2-3/4 1/2 1-3/8 7/8
3/8 3/8 1-7/8 7/8 1 1/2 • Straight Type or Angle Type
• Size Inserted Into and Size Connection
1/2 3/8 2-3/8 1 1-1/4 5/8
• Materials

INSTALLATION CLEANING
The strainer is designed for use in conjunction with a Cla-Val After inspection, cleaning of the X46 can begin. Water service usually will produce
Main Valve, but can be installed in any piping system where mineral or lime deposits on metal parts in contact with water. These deposits can
there is a moving fluid stream to keep it clean. When it is used be cleaned by dipping X46 in a 5-percent muriatic acid solution just long enough
with the Cla-Val Valve, it is threaded into the upstream body port for deposit to dissolve. This will remove most of the common types of deposits.
provided for it on the side of the valve. It projects through the Caution: use extreme care when handling acid. If the deposit is not removed
side of the Main Valve into the flow stream. All liquid shunted to by acid, then a fine grit (400) wet or dry sandpaper can be used with water.
the pilot control system and to the cover chamber of the Main Rinse parts in water before handling. An appropriate solvent can clean parts used
Valve passes through the X46 Flow Clean Strainer. in fueling service. Dry with compressed air or a clean, lint-free cloth.
Protect from damage and dust until reassembled.
INSPECTION REPLACEMENT
Inspect internal and external threads for damage or evidence If there is any sign of damage, or if there is the slightest doubt that the Model X46
of cross-threading. Check inner and outer screens for clogging, Flow Clean Strainer may not afford completely satisfactory operation, replace it. Use
embedded foreign particles, breaks, cracks, corrosion, fatigue, Inspection steps as a guide. Neither inner screen, outer screen, nor housing is fur-
and other signs of damage. nished as a replacement part. Replace Model X46 Flow Clean Strainer as a com-
plete unit.
DISASSEMBLY
When ordering replacement Flow-Clean Strainers, it is important to determine pipe
Do not attempt to remove the screens from the strainer housing.
size of the tapped hole into which the strainer will be inserted (refer to column A or
F), and the size of the external connection (refer to column B or G).

CLA-VAL P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: 949-722-4800 • Fax: 949-548-5441 • E-mail: claval@cla-val.com • Website cla-val.com
©
Copyright Cla-Val 2011 Printed in USA Specifications subject to change without notice. N-X46 (R-3/2011)
 90-21 UL
Product Identification
How to Order
Proper Identification
For ordering repair kits, replacement parts, or for
inquiries concerning valve operation it is important to
properly identify Cla-Val products already in service.
Include all nameplate data with your inquiry. Pertinent
product data includes valve function, size, material,
pressure rating, end details, type of pilot controls used
and control adjustment ranges.

Identification Plate
For product identification, cast in body markings are
supplemented by the identification plate illustrated on
this page. The plate is mounted in the most practical
position. It is extremely important that this identifi-
cation plate is not painted over, removed, or in any
Specify when How To Order Unless Otherwise
other way rendered illegible.
Ordering There are many valves and con- Specified
• Model Number trols manufactured by Cla-Val. that
• Adjustment Range are not listed due to the sheer vol- • X46A Strainer is included.
(As Applicable) ume. For information not listed, • CK2 Isolation Valves is
• Valve Size please contact your local Cla-Val included in price on 6" and
• Optional Features representative. larger valve sizes.
• Pressure Class

Limited Warranty Terms Of Sale

Automatic valves and controls as manufactured by Cla- ACCEPTANCE OF ORDERS
Val are warranted for one year from date of shipment All orders are subject to acceptance by our main office at
against manufacturing defects in material and workman- Newport Beach, California.
ship which develop in the service for which they are CREDIT TERMS
designed, provided the products are installed and used in Credit terms are net thirty (30) days from date of invoice.
accordance with all applicable instructions and limita- PURCHASE ORDER FORMS
tions issued by Cla-Val. Orders submitted on customer’s own purchase order forms
will be accepted only with the express understanding that no
We will repair or replace defective material, free of statements, clauses, or conditions contained in said order
form will be binding on the Seller if they in any way modify
charge, which is returned to our factory, transportation the Seller’s own terms and conditions of sales.
charges prepaid, provided that, after inspection, the mate- PRODUCT CHANGES
rial is found to have been defective at time of shipment. The right is reserved to make changes in pattern, design or
This warranty is expressly conditioned on the purchaser’s materials when deemed necessary, without prior notice.
giving Cla-Val immediate written notice upon discovery of PRICES
the defect. All prices are F.O.B. Newport Beach, California, unless
expressly stated otherwise on our acknowledgement of the
Components used by Cla-Val but manufactured by others, order. Prices are subject to change without notice. The
are warranted only to the extent of that manufacturer’s prices at which any order is accepted are subject to adjust-
ment to the Seller’s price in effect at the time of shipment.
guarantee. Prices do not include sales, excise, municipal, state or any
other Government taxes. Minimum order charge $75.00.
This warranty shall not apply if the product has been
RESPONSIBILITY
altered or repaired by others, and Cla-Val. shall make no
We will not be responsible for delays resulting from strikes,
allowance or credit for such repairs or alterations unless accidents, negligence of carriers, or other causes beyond
authorized in writing by Cla-Val. our control. Also, we will not be liable for any unauthorized
product alterations or charges accruing there from.
Disclaimer Of Warranties And Risk
Limitations Of Liability All goods are shipped at the risk of the purchaser after they have been
The foregoing warranty is exclusive and in lieu of all other delivered by us to the carrier. Claims for error, shortages, etc., must be
made upon receipt of goods.
warranties and representations, whether expressed,
EXPORT SHIPMENTS
implied, oral or written, including but not limited to any
Export shipments are subject to an additional charge for export packing.
implied warranties or merchantability or fitness for a partic-
ular purpose. All such other warranties and representations RETURNED GOODS
are hereby cancelled. 1. Customers must obtain written approval from Cla-Val prior to return-
ing any material.
Cla-Val shall not be liable for any incidental or consequential
2. Cla-Val reserves the right to refuse the return of any products.
loss, damage or expense arising directly or indirectly from
the use of the product. Cla-Val shall not be liable for any 3. Products more than six (6) months old cannot be returned for cred-
it.
damages or charges for labor or expense in making repairs
4. Specially produced, non-standard models cannot be returned for
or adjustments to the product. Cla-Val shall not be liable for
credit.
any damages or charges sustained in the adaptation or use
5. Rubber goods cannot be returned for credit, unless as part of an
of its engineering data and services. No representative of
unopened repair kit which is less than six months old.
Cla-Val may change any of the foregoing or assume any
6. Goods authorized for return are subject to a 35% ($75 minimum)
additional liability or responsibility in connection with the restocking charge and a service charge for inspection, recondition-
product. The liability of Cla-Val is limited to material replace- ing, replacement of rubber parts, retesting and repackaging as
ments F.O.B. Newport Beach, California. required.
7. Authorized returned goods must be packaged and shipped prepaid to
Cla-Val., 1701 Placentia Avenue, Costa Mesa, California 92627-
4475.

CLA-VAL
1701 Placentia Avenue • Costa Mesa, CA 92627
800-942-6326 Fax: 949-548-5441 Web Site: cla-val.com E-mail: info@cla-val.com
CLA-VAL CANADA CLA-VAL EUROPE CLA-VAL UK CLA-VAL FRANCE CLA-VAL PACIFIC
4687 Christie Drive Chemin des Mésanges 1 Dainton House, Goods Station Road Porte du Grand Lyon 1 45 Kennaway Road
Beamsville, Ontario CH-1032 Romanel/ Tunbridge Wells ZAC du Champ du Périer Woolston, Christchurch, 8023
Canada L0R 1B4 Lausanne, Switzerland Kent TN1 2 DH England France - 01700 Neyron New Zealand
Phone: 905-563-4963 Phone: 41-21-643-15-55 Phone: 44-1892-514-400 Phone: 33-4-72-25-92-93 Phone: 64-39644860
E-mail sales@cla-val.ca E-mail: cla-val@cla-val.ch E-mail: info@cla-val.co.uk E-mail: cla-val@cla-val.fr www.cla-valpacific.com
E-mail: info@cla-valpacific.com

E-Product I.D. 90-21 UL

©COPYRIGHT CLA-VAL 2019 Printed in USA Specifications subject to change without notice. visit www.cla-val-latinamerica.com for Spanish literature

(R-09/2019)
 INSTALLATION / OPERATION / MAINTENANCE

MODEL
REPAIR KITS
Model 100-01 Hytrol Main Valve
BUNA-N MATERIAL
RUBBER KIT REPAIR KIT REBUILD ASSEMBLY STUD & NUT KIT
STOCK NO. STOCK NO. STOCK NO. STOCK NO.
3/8” 9169801K 21176614B 21176633J
1/2” 9169802H 21176602F 21176615A 21176634H
3/4” 9169802H 21176602F 21176615A 21176634H
1” Non-Guided 9169803F 21176601G 21176616K 21176636F
1” 9169804D 21176603E 21176617J 21176636F
1 1/4” 9169804D 21176603E 21176617J 21176636F
1 1/2” 9169804D 21176603E 21176617J 21176636F
2” 9169805A 21176608K 21176618H 21176637E
2 1/2” 9169811J 21176609J 21176619G 21176638D
3” 9169812G 21176604D 21176620D 21176639C
4” 9169813E 21176605C 21176621C 21176640K
6” 9169815K 21176606B 21176622B 21176641J
8” 9817901D 21176607A 21176623A 21176642H
10” 9817902B 21176610F 21176624K 21176643G
12” 9817903K 21176611E 21176625J 21176644F
14” 9817904H 21176612D 21176626H 21176645E
16” 9817905E 21176613C 21176627G 21176645E

Model 100-20 Hytrol Main Valve

BUNA-N MATERIAL
RUBBER KIT REPAIR KIT REBUILD ASSEMBLY STUD & NUT KIT
STOCK NO. STOCK NO. STOCK NO. STOCK NO.
3” 9169805A 21176608K 21176618H 21176637E
4” 9169812G 21176604D 21176620D 21176639C
6” 9169813E 21176605C 21176621C 21176640K
8” 9169815K 21176606B 21176622B 21176641J
10” 9817901D 21176607A 21176623A 21176642H
12” 9817902B 21176610F 21176624K 21176643G
14” 9817903K 21176611E 21176625J 21176644F
16” 9817903K 21176611E 21176625J 21176644F
Consult factory for larger sizes

Rubber Kit Includes: Diaphragm, Disc, Spacer Washers

Repair Kit Includes: Diaphragm, Disc, Spacer Washers, Epoxy Coated Disc Retainer, Epoxy Coated Diaphragm Washer,
Protective Washer

Rebuild Assembly Includes: Diaphragm, Disc, Spacer Washers, Epoxy Coated Disc Retainer, Epoxy Coated
Diaphragm Washer, Protective Washer, Stainless Steel Bolts & Washers (6" & Below),
Stainless Steel Studs, Nuts, & Washers (8" & Above), Stem, Stem Nut, Disc Guide,
Standard Cover Spring, Cover Washer

Stud & Nut Kit Includes: Stainless Steel Bolts & Washers (6" & Below), Stainless Steel Studs, Nuts, & Washers (8" & Above)
Repair Kits for 100-02/100-21 Powertrol and 100-03/100-22 Powercheck Main Valves
For: Powertrol and Powercheck Main Valves—150 Pressure Class Only
Includes: Diaphragm, Disc (or Disc Assembly) and O-rings and full set of spare Spacer Washers.
Valve Kit Stock Number Valve Kit Stock Number
Size 100-02 Size 100-02 & 100-03 100-21 & 100-22
⁄8”
3
9169901H 21⁄2” 9169910J N/A
1
⁄2” & 3⁄4” 9169902F 3” 9169911G 9169905J
1” 9169903D 4” 9169912E 9169911G
11⁄4” & 11⁄2” 9169904B 6” 9169913C 9169912E
2” 9169905J 8” 99116G 9169913C
10” 9169939H 99116G
12” 9169937B 9169939H
Larger Sizes: Consult Factory.
Repair Kits for 100-04/100-23 Hy-Check Main Valves
For: Hy-Check Main Valves—150 Pressure Class Only
Includes: Diaphragm, Disc and O-Rings and full set of spare Spacer Washers.
Valve Kit Stock Number Valve Kit Stock Number
Size 100-04 100-23 Size 100-04 100-23
4” 20210901B N/A 12” 20210905H 20210904J
6” 20210902A 20210901B 14” 20210906G N/A
8” 20210903K 20210902A 16” 20210907F 20210905H
10” 20210904J 20210903K 20” N/A 20210907F
24” N/A 20210907F
Larger Sizes: Consult Factory.
Repair Kits for Pilot Control Valves (In Standard Materials Only)
Includes: Diaphragm, Disc (or Disc Assembly), O-Rings, Gaskets or spare Screws as appropriate.
BUNA-N® (Standard Material) VITON (For KB Controls)
Pilot Kit Stock Pilot Kit Stock Pilot Kit Stock
Control Number Control Number Control Number
CDB 9170006C CFM-9 12223E CDB-KB 9170012A
CDB-30 9170023H CRA (w/bucking spring) 9170001D CRA-KB N/A
CDB-31 9170024F CRD (w/bucking spring) 9170002B CRD-KB (w/bucking spring) 9170008J
CDB-7 9170017K CRD (no bucking spring) 9170003K CRL-KB 9170013J
CDH-2 18225D CRD-18 20275401K CDHS-2BKB 9170010E
CDHS-2 44607A CRD-22 98923G CDHS-2FKB 9170011C
CDHS-2B 9170004H CRL (55F, 55L) 9170007A CDHS-18KB (no bucking spring) 9170009G
CDHS-2F 9170005E CRL60/55L-60 9170033G 102C-KB 1726202D
CDHS-3C-A2 24657K CRL60/55L60 1" 9170042H
CDHS-8A 2666901A CRL-4A 43413E
CDHS-18 9170003K CRL-5 (55B) 65755B
CDS-4 9170014G CRL-5A (55G) 20666E
CDS-5 14200A CRL-18 20309801C
CDS-6 20119301A Universal CRL 9170041K
CDS-6A 20349401C CV 9170019F
CFCM-M1 1222301C X105L (O-ring) 00951E
Buna-N®
CFM-2 12223E 102B-1 1502201F
CFM-7 1263901K 102C-2 1726201F CRD Disc Ret. (Solid) C5256H
CFM-7A 1263901K 102C-3 1726201F CRD Disc Ret. (Spring) C5255K

Repair Assemblies (In Standard Materials Only)

Control Description Stock Number
CF1-C1 Pilot Assembly Only 89541H
CF1-Cl Complete Float Control less Ball and Rod 89016A
CFC2-C1 Disc, Distributor and Seals 2674701E
CSM 11-A2-2 Mechanical Parts Assembly 97544B
CSM 11-A2-2 Pilot Assembly Only 18053K
33A 1” Complete Internal Assembly and Seal 2036030B
33A 2” Complete Internal Assembly and Seal 2040830J
When ordering, please give complete nameplate data of the valve and/or control being repaired. MINIMUM ORDER CHARGE APPLIES

CLA-VAL 1701 Placentia Ave • Costa Mesa CA 92627 Phone: 949-722-4800 • Fax: 949-548-5441 • E-mail: info@cla-val.com • www.cla-val.com
© Copyright Cla-Val 2019 Printed in USA Specifications subject to change without notice. N-RK (R-04/2019)