Cla-Val 790-63 User Manual

790-63

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INSTALLATION / OPERATION / MAINTENANCE

Model 100-42 Valve

in Closed Position

Upstream pressure is introduced to the
control chamber (the chamber formed
behind the liner) through the control
piping and restrictor. When the pilot is
closed, full inlet pressure is supplied to
the control chamber, thus balancing the
force developed by inlet pressure act­ing on the upstream face on the liner.
Under these conditions, the liner
remains in the fully closed position.

Since the operating pressure in the
control chamber is greater than the out­let pressure, an additional closing force
is developed across the liner, pressing
the liner against the surrounding slotted
grillwork area and seating surface.

Model 100-42 Valve

in Partially Open Position

As loading pressure is lowered slightly
below inlet pressure, the central portion
of the liner is forced to invert and come
to rest against the tip of the control
chamber cavity. Reducing the loading
pressure further (but still higher than
outlet pressure) causes the liner to
drape over the cone shaped portion of
the control chamber cavity. This action
causes the outer section of the liner to
roll off the seating surface and a portion
of the grillwork to partially open the
valve.

Model 100-42 Valve

in Fully Open Position

The valve is fully opened when loading
pressure is sufficiently reduced to allow
the liner to roll back completely and
expose the full slot area. Restoring
loading pressure reverses the liner
rolling action to return the liner to the
fully closed position.

DESCRIPTION

PRINCIPLE OF OPERATION

PILOT
CONTROL
VALVE

RESTRICTOR

SEATING AREA

CONTROL CHAMBER

INLET

Pilot
Control
Valve

RESTRICTOR

SEATING AREA

CONTROL CHAMBER

INLET

PILOT
CONTROL
VALVE

RESTRICTOR

SEATING AREA

INLET

CONTROL CHAMBER

100-42

The Cla-Val Model 100-42 Roll Seal valve
is a hydraulically operated valve used to
control liquid flow by means of a flexible
control element, the liner.

The basic valve consists of only two parts:
a one piece, investment cast body and an
elastomeric liner. The valve body is con­structed with internal ribs and slots forming
a grillwork which surrounds the liner to pro­vide support. A normally closed type valve
is formed by the installed liner which covers
the grillwork and seats against the raised
seating surface in the valve body.

Upstream pressure actuates the valve to
produce valve opening by rolling the liner off
the seating surface and the slotted grillwork.

The valve is actuated by upstream pressure
as the loading pressure (pressure supplied
to the control chamber) is varied by an
external pilot control system.

A typical pilot control system used to oper­ate the Model 100-42 valve consists of a
restriction and a suitable pilot connected to
the valve.

700 Series Roll Seal

SERIES

The Model 100-42 valve in 6" through
12" sizes are constructed with separa­ble "slip-on" style flanges. Furnished
standard in either class 150 or 300
raised face type, the flanges are
removable and interchangeable. The
class 150 flange may be bolted up to
class 125 pipeline flanges and the
class 300 flange may be mated
against a class 250 flange.

Locate pilot system port connections
at the top of valve in pipeline to allow
easy air venting. A line size strainer is
recommended, mounted on the valve
inlet.

The valve should be given a visual inspec­tion before installation to be sure no foreign
materials have collected inside the valve
during shipment or storage.

Pipelines should be flushed out before the
valve is installed in the system. New sys­tems, especially, should be cleaned as con­taminates such as welding beads, scale,
rocks, etc. are commonly contained within
the pipeline.

The valve should be installed in a location
allowing sufficient working space around
the valve to provide easy access for main­tenance and removal for servicing.

For 2", 3", and 4" sizes only. Insert the lower
half pattern of stud bolts through the bolt
holes of the upstream and downstream
pipeline flanges.

For 2" & 3" valves only. The 125 and 150
series flanges use a different number of
bolts than the 250 and 300 series flanges.
Hence, the wafer valve body configuration
is inherently self centering regardless of the
flange used.

Install the valve between the flanges being
sure to include the appropriate flange gas­kets between each end of the valve and the
mating pipe flange.

Note: The valve must be installed with the
flow arrow on side of body pointing to the
downstream piping section. Cla-Val 700
Series valves may be installed in any posi­tion in either vertical or horizontal installa­tions without any effect on valve operation.

Insert the remaining stud bolts and nuts and
tighten evenly using a diagonal cross-over
type pattern.

For the 4'' valve, ANSI pipe flanges use an
8 bolt pattern regardless of pressure rat­ings, although the 250 and 300 series use
larger bolts on a larger bolt circle. The 4"
valve can be centered in the larger 250 and
300 class flanges by rotating the valve body
into full radial contact with the bolt studs
prior to tightening.

INSTALLATION

PROCEDURE

2.

3.

4.

4a.

6.

7.

1.

Gasket

Gasket

Recommended Strainer

Model 100-42 Roll Seal Valve

The Cla-Val Model 100-42 Roll Seal
valve in 2", 3", and 4" sizes are
designed to mount between standard
pipe flanges (ANSI 125, 150, 250, and
300 series) as a wafer type valve. The
outer portion of the valve body is con­structed with fluted (recessed) sec­tions to provide clearance for the class
125 and 150 flange bolt pattern while
the basic outside diameter of the body
centers within the class 250 and 300
flange bolt pattern.

If an inline basket type strainer is to be
included in the installation, insert the strain­er into the upstream pipe, making sure a
gasket is placed between the strainer and
the upstream flange.

4b.

5.

Liner Retainer Removal 2"-12" Sizes

The 2" and 3" liner retainer is secured to the valve with an Allen
screw. Loosen the Allen screw, pull the locking pin back towards
center of retainer, and remove the retainer from valve.

To install, insert the retainer, (do not block inlet feed hole), push
locking pin into position and tighten Allen screw.

The 4"-12" liner retainers are secured with a snap ring. Remove
the snap ring and retainer.

To install, insert retainer and install snap ring into the groove of
valve. Be sure snap ring is completely inserted into groove.

Liner Removal 2"-12" Sizes

The tool used for removal should be free of sharp edges to pre­vent damage to the liner, the valve body seat or control cham­ber surfaces. A motorcycle tire iron or similar tool works well.

1. Insert the tool between the liner and the valve body as
deeply as possible.

2. Using the seat edge as a fulcrum, rock the end of the tool
away from the valve in a manner to pull the liner bead out of the
body. Grasp the liner and remove from the valve body.

Liner Installation 2", 3", 4" Sizes

Thoroughly clean out the interior of the valve body control cham­ber cavity.

Liberally apply glycerine inside the control chamber cavity and
around the seal bead area of the liner.

DO NOT USE ANY HYDROCARBON OR SILICONE BASED
LUBRICANTS ON LINERS AS THESE COMPOUNDS CAN
SEVERELY ATTACK THE LINER MATERIAL.

3. Fold the liner as shown and install into the valve body con­trol chamber as deeply as possible.

4. Continuing to force the liner into the control chamber cavity,
again fold the liner as shown to insert the liner seal bead section
under the valve body seat surface.

5. Work the folded section of the liner into place by pushing
against the folded area to slide the seal bead down the conical
face of the control chamber.

Liner Seating Instructions 2", 3", 4" Sizes

After installing the liner, it must be seated over the manifold ring
in the valve body. The objective of this seating procedure is to
place the inside lip of the liner over the outside lip of the mani­fold ring.

6. 4" valve with liner installed.

7. Pinch, pull and knead the liner 360° around to seat the liner
on the manifold ring.

8. Using a dull tool or hammer handle, pry the outer part of the
liner towards the center to help "seat" the liner.

9. Now push the liner down into the valve, holding your hand
on the depressed liner, seal off the loading port with your finger.

10. Remove your hand from liner and continue holding your fin­ger over the loading port. If liner is seated, it will be held in the
open position as long as your finger is over the loading port.
When you release your finger, the liner will popup. If not seated,
repeat with Step 7.

Install liner retainer into body.

1

3

5

7

9

2

4

6

8

10

Liner Installation
6", 8", 10", 12" sizes

1. Tools required: Bottle of drugstore glycerine,
30" crowbar, double headed plastic hammer
with 14" handle, rubber mallet and large flat
blade screwdriver.

2. Liberally wipe glycerine on the inside of the
valve and on the outer edge of the liner. Fold
liner in half and insert into valve body.

3. Push liner in as far as possible forcing it out side
ways.

4. Place the crowbar at the upper 25% point of the
liner. Take your other hand and push on nose of liner
to bend the liner over the crowbar. The less material
folded over, the easier it will go into the valve. If too
much is folded over, it will be difficult to complete
liner installation.

5. Continue bending liner nose down into the valve.
Use your hands and/or hammer handle to continue
forcing it down into valve. It is important to keep the
"V" of the bend near the 25% point. If it goes over
the center, The liner won't go in, and it will be nec­essary to start over at Step 3.

6. Use the hammer to force the liner down and out into
the valve body.

7. Use the hammer handle for the final insertion.
Sometimes it is helpful to beat on the liner with the
hammer for the final step.

8. To seat the liner on the manifold ring use the ham­mer handle to push down on the liner near bore of
valve inlet and pry handle and liner towards the cen­ter. Continue this prying action for 360° around the
liner for proper seating.

9. To test for liner seating, push down on the center of
liner and close the loading port shut-off cock, or
block it with your hand. When you release your hand
from the liner, it should remain in the down position
until the loading port is opened.

10. If liner appears seated, open loading port cock and
liner should pop-up to the closed position. Repeat
Steps 6-10 if liner is not seated.

When the liner is fully seated, the inside diameter of
the liner will be seated over the outside diameter of
the manifold ring. The manifold ring is a raised circu­lar ridge at the bottom of the open cavity which pro­vides for even distribution of the fluid coming in and
going out the loading port.

Install liner retainer into body.

1

3

5

7

9

2

4

6

8

10

Relief Valve Applications 750
Series Valves

The following instructions are for valves
equipped with a Model CRL Pressure
Relief Pilot Control.
Due to the nature of intended use, the
system being protected with the relief
valve will most likely not be able to fur­nish the pressure source needed to
establish the proper setpoint of the pilot
control. Due to this fact, in most
instances, the relief valve setting proce­dures will either have to be carried out at
other locations or an auxiliary pressure
source will have to be supplied at the
site in order to carry out the following
procedure.
Remove the adjustment cap and
increase tension on the range spring by
means of the adjustment screw (turn
clockwise) until maximum spring load is
attained.
Slowly introduce inlet pressure to the
valve at the desired setpoint value.
Bleed all air.
Gradually decrease tension on the
range spring by means of the adjust­ment screw (turn counterclockwise) until
flow is initiated through the valve.
Reduce system pressure back to normal
value. Tighten the adjustment screw
lock nut and replace the adjustment cap.
The valve is now ready for service.

In most instances, the 700 Series Cla-Val
Control valves will be shipped complete
with a pilot control system mounted on the
Model 100-42 valve. Consult the appropri­ate start up and operation instructions for
the pilot control used before pressurizing
the system.

IT IS IMPORTANT THAT THE PRESSURIZA­TION AND DEPRESSURIZATION OF ALL
INSTALLATIONS BE CARRIED OUT IN A MAN­NER TO PREVENT IMPOSING A REVERSE
PRESSURE CONDITION ON THE CLA-VAL
MODEL 100-42 VALVE. PRESSURIZATION OF
THE SYSTEM SHOULD BE ACCOMPLISHED
BY PRESSURIZING THE INLET SIDE FIRST.

DEPRESSURIZATION OF THE SYS­TEM SHOULD BE ACCOMPLISHED BY
DEPRESSURIZING THE OUTLET SIDE
FIRST. FAILURE TO FOLLOW THIS
PROCEDURE COULD RESULT IN DIS­LODGEMENT AND/OR DESTRUCTION
OF THE RUBBER LINER.

Pressure Reducing
790 Series Valves

The following instructions are for
valves equipped with a Model CRD
Pressure Reducing Pilot Control.
Remove the adjustment cap and back
off adjustment screw setting (turn
counterclockwise) of the CRD
Pressure Reducing Pilot Control to fully
relieve all loading on the range spring.
Slowly open the upstream main line
block valve to pressurize the inlet sec-
tion of the valve.
Bleed any entrapped air from the con­trol chamber of the valve and tubing
sections by loosening fittings at the
highest points. Retighten fittings.
Install gauge on downstream port of
CRD.
Slowly increase tension on the range
spring, by means of the adjustment
screw (turn clockwise) until the desired
downstream pressure is attained. Use
a gauge.
Open the downstream main line block
valve.
If required, reset the pilot adjustment
screw setting to obtain the downstream
pressure desired.
Tighten the adjustment screw lock nut
and replace the adjustment cap.

Back Pressure Control
750 Series Valves

The following instructions are for
valves equipped with a Model CRL
Back Pressure Pilot Control.
Remove the adjustment cap and
increase tension on the range spring,
by means of the adjustment screw
(turn clockwise) until maximum
spring load is attained.
Slowly open the upstream main line
block valve to pressurize the inlet
section of the valve.
Bleed any entrapped air from the
control chamber of the valve and tub­ing sections by loosening fittings at
the highest points. Retighten fittings.
Open the downstream main line
block valve.
Gradually decrease tension on the
range spring by means of the adjust­ment screw (turn counterclockwise)
until upstream pressure decreases to
the desired setpoint.
Tighten the adjustment screw lock
nut and replace the adjustment cap.

PLACING VALVE INTO OPERATION

START-UP INSTRUCTIONS

Vent the upstream section to fully relieve
pressure in the inlet section and control cham­ber of the Model 100-42 valve.
If the valve liner is to be inspected or
replaced, remove the valve from the main line.

The following procedure should be followed
when taking the Model 100-42 valve out of
service.

Close the upstream main line block valve
first. Then close the downstream main line
block valve.
Vent the downstream section to fully relieve
pressure in the outlet section of the valve.

Taking Valve Out of Service

1.

2.

3.

4.

Important Procedure for All Installations:

1.

2.

3.

4.

5.

6.

7.

1.

2.

3.

4.

5.

6.

1.

2.

3.

4.

2 1/2 Pipe Diameters

Min Recomended

Length Spool

2

1

OUTLE

T

Recommended Pipe layout

6" - 12" Flange style 100-42

2 Pipe Coupling (Rubber Gasket Type)
1 100-42 Main Valve, Flange X Flange

2 1/2 PIPE DIAMETERS

MIN RECOMENDED

LENGTH SPOOL

INLET

INLET

OUTLET

OUTLET

3

4

1

2

Roll Seal

®

™

Roll Seal

®

™

1 COUPLER FOR GROOVED PIPE
2 SPOOL STRAINER ASSEMBLY (WITH CONE)
3 100-42 MAIN VALVE, GROOVE X FLANGE
4 100-42 MAIN VALVE, GROOVE X GROOVE

Recommended Pipe layout

6" - 12" Grooved style 100-42

Item

No.

No.

Req'd

Material

(Standard)

Description

1
2*
3
4
5
6
7
8

Body
Liner
Nameplate
Drive Screw
Liner Retainer
Retaining Ring
Slip-on Flange
Flange Retainer Ring

1
1
1
2
1
1
2
2

316L Stainless Steel "L"
Natural Rubber
Aluminum
316L Stainless Steel
316L Stainless Steel
316L Stainless Steel
Steel-Cad. Pl.
Steel-Cad. Pl.

*Recommended Spare Part

4" Wafer Style Valve 2-3" Wafer Style Valve 6"-12" Flanged Valve

6

5

5

1

2

3

4

5

6

4

3

2

8

7

1

When ordering
please specify:

• All nameplate data

• Description

• Part Numbers

• Item Number

• Material

CLA-VAL

Copyright Cla-Val 2008 Printed in USA Specifications subject to change without notice.

P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website cla-val.com

©

N-100-42 (R-1/08)

ITEM DESCRIPTION MATERIAL

1 Pipe Plug Steel

2 Strainer Plug Brass

3 Gasket Copper

4 Screen SST

5 Body Brass

1

2

3

4

5

3/8 NPT

2.06

2.72

SIZE STOCK NUMBER

3/8 x 3/8 33450J

Strainer

X43

No parts available. Rreplacement assembly only.

Standard 60 mesh pilot system strainer for fluid service.

CLA-VAL

Copyright Cla-Val 2008 Printed in USA Specifications subject to change without notice.

P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website cla-val.com

©

PL- X43 (R-1/08)

PARTS LIST

This page was intentionally left blank!

This page was intentionally left blank!

DESCRIPTION

The Cla-Val Model CRD Pressure Reducing Control automatically reduces
a higher inlet pressure to a lower outlet pressure. It is a direct acting,
spring loaded, diaphragm type control that operates hydraulically or pneu­matically. 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
very close pressure limits.

OPERATION

The CRD Pressure Reducing Control is normally held open by the force of
the compression spring above the diaphragm; and delivery pressure acts
on the underside of the diaphragm. Flow through the valve responds to
changes in downstream demand to maintain a pressure.

INSTALLATION

The CRD Pressure Reducing Control may be installed in any position.
There is one inlet port and two outlets, for either straight or angle installa­tion. The second outlet port can be used for a gage connection. A flow
arrow is marked on the body casting.

ADJUSTMENT PROCEDURE

The CRD Pressure Reducing Control can be adjusted to provide a deliv­ery pressure range as specified on the nameplate.

Pressure adjustment is made by turning the adjustment screw to vary the
spring pressure on the diaphragm. The greater the compression on the
spring the higher the pressure setting.

1. Turn the adjustment screw in (clockwise) to increase
delivery pressure.

2. Turn the adjustment screw out (counter-clockwise) to
decrease the delivery pressure.

3. When pressure adjustment is completed tighten jam nut on
adjusting screw and replace protective cap.

4. When this control is used, as a pilot control on a
Cla-Val main valve, the adjustment should be made
under flowing conditions. The flow rate is not critical,
but generally should be somewhat lower than normal
in order to provide an inlet pressure several psi higher
than the desired setting

CRD

MAINTENANCE

Disassembly

To disassemble follow the sequence of the item numbers assigned to
parts in the sectional illustration.

Reassembly

Reassembly is the reverse of disassembly. Caution must be taken to
avoid having the yoke (17) drag on the inlet nozzle of the body (18).
Follow this procedure:

1. Place yoke (17) in body and screw the disc retainer
assembly (16) until it bottoms.

2. Install gasket (14) and spring (19) for 2-30 and 2-6.5 psi

range onto plug (13) and fasten into body. Disc retainer
must enter guide hole in plug as it is assembled. Screw
the plug in by hand. Use wrench to tighten only.

3. Place diaphragm (12) diaphragm washer (11) and belleville
washer (20) on yoke. Screw on hex nut (10).

4. Hold the diaphragm so that the screw holes in the
diaphragm and body align. Tighten diaphragm nut with
a wrench. At the final tightening release the diaphragm
and permit it to rotate 5° to 10°. The diaphragm holes
should now be properly aligned with the body holes.

To check for proper alignment proceed as follows:

Rotate diaphragm clockwise and counterclockwise as far as possible.
Diaphragm screw holes should rotate equal distance on either side of
body screw holes ±1/8".

Repeat assembly procedure until diaphragm and yoke are properly
aligned. There must be no contact between yoke and body nozzle
during its normal movement. To simulate this movement hold body
and diaphragm holes aligned. Move yoke to open and closed posi­tions. There must be no evidence of contact or dragging.

5. Install spring (9) with spring guide (8).

6. Install cover (5), adjusting screw (2) and nut (3), then cap (1).

Pressure Reducing Control

The approximate minimum flow rates given in the table are for the main valve
on which the CRD is installed.

Valve Size

Minimum Flow GPM

1 1/4" -3" 4"-8" 10"-16"

15-30 50-200 300-650

MODEL

INSTALLATION / OPERATION / MAINTENANCE

CLA-VAL

Copyright Cla-Val 2009 Printed in USA Specifications subject to change without notice.

P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website cla-val.com

©

N-CRD (R-3/09)

SYMPTOM PROBABLE CAUSE REMEDY

Fails to open

when deliver pres-

sure lowers

No spring compression Tighten adjusting screw

Damaged spring Disassemble and replace

Spring guide (8) is not in place Assemble properly

Yoke dragging on inlet nozzle

Disassemble and reassemble

properly (refer to Reassembly)

Fails to close
when delivery
pressure rises

Spring compressed solid Back off adjusting screw

Mechanical obstruction

Disassemble and reassemble

properly (refer to Reassembly)

Worn disc

Disassemble remove and

replace disc retainer assembly

Yoke dragging on inlet nozzle

Disassemble and reassemble

properly (refer to Reassembly)

Leakage from

cover vent hole

Damaged diaphragm Disassemble and replace

Loose diaphragm nut Remove cover and tighten nut

Pressure Reducing Control

*SUGGESTED REPAIR PARTS

CRD

3 1/8

PRESSURE SETTING
ADJUSTING SCREW
(TURN CLOCKWISE
TO INCREASE SETTING

SECTION A-A
OPEN POSTION
FOR HIGH PRESSURE CONTROL

5 3/8

1 13/16

inlet

B

13

14

16

18

17

12

11

10

9

8

5

3

1

2

cover vent

B

3/8" NPT

16

19

Body and Disc
Retainer Detail

for Low Pressure

Control

SECTION B-B

CLOSED POSITION

20

18

17

15

4

A

A

67

When ordering parts specify:

• All nameplate data

• Item Description

• Item number

CLA-VAL

Copyright Cla-Val 2008 Printed in USA Specifications subject to change without notice.

P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website cla-val.com

©

PL-CRD (R-1/08)

PARTS LIST

Size

(inch)

Stock

Number

Adjustment Range

psi Ft of Water
3/8 71943-07A 2 - 6.5 4.5 - 15
3/8 71943-08J 2 - 30 4.5 - 69
3/8 71943-03K 15 - 75 35 - 173
3/8 71943-11C 20 - 105 46 - 242
3/8 71943-04H 30 - 300 69 - 692

Factory Set Pressure

PSI per Turn*

2 - 6.5 set @ 3.5 psi .61

2 - 30 set @ 10 psi 3.0

15 - 75 set @ 20 psi 9.0
20 - 105 set @ 60 psi 12.0
30 - 300 set @ 60 psi 27.0

*Approximate-Final Adjustment should be

with a pressure gauge and with flow.

Item Description Material Part Number List Price

1 Cap PL 67628J

2 Adjusting Screw BRS 7188201D

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

4* Machine Screw (Fil.Hd.) 8 Req'd 303 6757821B

5 Cover BRS C2544K

6 Nameplate Screw SS 67999D

7 Nameplate BRS C0022001G

8 Spring Guide 302 71881H

Spring Guide (20 - 105 psi) 303 205620F

9 Spring (15-75 psi) CHR/VAN 71884B

Spring (2 - 6.5 psi) SS 82575C

Spring (2 - 30 psi) SS 81594E

Spring (20 - 105 psi) 316 20632101E

Spring (30 - 300 psi) CHR/VAN 71885J

10 Hex Nut 303 71883D

11 Diaphragm Washer 302 71891G

12* Diaphragm NBR C6936D

13 Plug, Body BRS V5653A

14* Gasket Fiber 40174F

15 Plug BRS 6766003F

16* Disc Retainer Assy. (15 - 75 psi) BZ/Rub C5256H

Disc Retainer Assy. (2 - 30 psi) BZ/Rub C5255K

Disc Retainer Assy. (20 - 105 psi) BZ/Rub C5256H

Disc Retainer Assy. (30 - 300 psi) BZ/Rub C5256H

17 Yoke VBZ V6951H

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

Pressure Reducing Control

*SUGGESTED REPAIR PARTS

CRD

3 1/8

PRESSURE SETTING
ADJUSTING SCREW
(TURN CLOCKWISE
TO INCREASE SETTING

SECTION A-A
OPEN POSTION
FOR HIGH PRESSURE CONTROL

5 3/8

1 13/16

inlet

B

13

14

16

18

17

12

11

10

9

8

5

3

1

2

cover vent

B

3/8" NPT

16

19

Body and Disc
Retainer Detail

for Low Pressure

Control

SECTION B-B

CLOSED POSITION

20

18

17

15

4

A

A

67

When ordering parts specify:

• All nameplate data

• Item Description

• Item number

CLA-VAL

Copyright Cla-Val 2008 Printed in USA Specifications subject to change without notice.

P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website cla-val.com

©

PL-CRD (R-1/08)

PARTS LIST

Size

(inch)

Stock

Number

Adjustment Range

psi Ft of Water
3/8 71943-07A 2 - 6.5 4.5 - 15
3/8 71943-08J 2 - 30 4.5 - 69
3/8 71943-03K 15 - 75 35 - 173
3/8 71943-11C 20 - 105 46 - 242
3/8 71943-04H 30 - 300 69 - 692

Factory Set Pressure

PSI per Turn*

2 - 6.5 set @ 3.5 psi .61

2 - 30 set @ 10 psi 3.0

15 - 75 set @ 20 psi 9.0
20 - 105 set @ 60 psi 12.0
30 - 300 set @ 60 psi 27.0

*Approximate-Final Adjustment should be

with a pressure gauge and with flow.

Item Description Material Part Number List Price

1 Cap PL 67628J

2 Adjusting Screw BRS 7188201D

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

4* Machine Screw (Fil.Hd.) 8 Req'd 303 6757821B

5 Cover BRS C2544K

6 Nameplate Screw SS 67999D

7 Nameplate BRS C0022001G

8 Spring Guide 302 71881H

Spring Guide (20 - 105 psi) 303 205620F

9 Spring (15-75 psi) CHR/VAN 71884B

Spring (2 - 6.5 psi) SS 82575C

Spring (2 - 30 psi) SS 81594E

Spring (20 - 105 psi) 316 20632101E

Spring (30 - 300 psi) CHR/VAN 71885J

10 Hex Nut 303 71883D

11 Diaphragm Washer 302 71891G

12* Diaphragm NBR C6936D

13 Plug, Body BRS V5653A

14* Gasket Fiber 40174F

15 Plug BRS 6766003F

16* Disc Retainer Assy. (15 - 75 psi) BZ/Rub C5256H

Disc Retainer Assy. (2 - 30 psi) BZ/Rub C5255K

Disc Retainer Assy. (20 - 105 psi) BZ/Rub C5256H

Disc Retainer Assy. (30 - 300 psi) BZ/Rub C5256H

17 Yoke VBZ V6951H

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

This page was intentionally left blank!

CLA-VAL

Copyright Cla-Val 2009 Printed in USA Specifications subject to change without notice.

P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website cla-val.com

©

INSTALLATION / OPERATION / MAINTENANCE

Flow Control

CV

MODEL

N-CV (R-1/09)

DESCRIPTION

The Cla-Val Model CV Flow Control is a simply-designed,
spring-loaded check valve. Rate of flow is full flow in one direc­tion and restricted in other direction. Flow is adjustable in the
restricted direction. It is intended for use in conjunction with a
pilot control system on a Cla-Val Automatic Control Valve.

OPERATION

The CV Flow Control permits full flow from port A to B, and
restricted flow in the reverse direction. Flow from port A to B
lifts the disc from seat, permitting full flow. Flow in the reverse
direction seats the disc, causing fluid to pass through the clear­ance between the stem and the disc. This clearance can be
increased, thereby increasing the restricted flow, by screwing
the stem out, or counter-clockwise. Turning the stem in, or
clockwise reduces the clearance between the stem and the
disc, thereby reducing the restricted flow.’

INSTALLATION

Install the CV Flow Control as shown in the valve schematic
All connections must be tight to prevent leakage.

DISASSEMBLY

Follow the sequence of the item numbers assigned to the
parts in the cross sectional illustration for recommended
order of disassembly.

Use a scriber, or similar sharp-pointed tool to remove O-ring
from the stem.

INSPECTION

Inspect all threads for damage or evidence of cross­threading. Check mating surface of seat and valve disc for
excessive scoring or embedded foreign particles. Check
spring for visible distortion, cracks and breaks. Inspect all
parts for damage, corrosion and cleanliness.

CLEANING

After disassembly and inspection, cleaning of the parts can
begin. Water service usually will produce mineral or lime
deposits on metal parts in contact with water. These
deposits can be cleaned by dipping the parts in a 5-percent
muriatic acid solution just long enough for deposits to dis­solve. This will remove most of the common types of
deposits. Caution: use extreme care when handling
acid. If the deposit is not removed by acid, then a fine grit
(400) wet or dry sandpaper can be used with water. Rinse
parts in water before handling. An appropriate solvent can
clean parts used in fueling service. Dry with compressed air
or a clean, lint-free cloth. Protect from damage and dust
until reassembled.

REPAIR AND REPLACEMENT

Minor nicks and scratches may be polished out using a fine
grade of emery or crocus cloth; replace parts if scratches
cannot be removed.

Replace O-ring packing and gasket each time CV Flow
Control is overhauled.

Replace all parts which are defective. Replace any parts
which create the slightest doubt that they will not afford com­pletely satisfactory operation. Use Inspection steps as a
guide.

REASSEMBLY

Reassembly is the reverse of disassembly; no special tools
are required.

TEST PROCEDURE

No testing of the flow Control is required prior to reassembly
to the pilot control system on Cla-Val Main Valve.

3/8" Flow Control

CV

2.12
MAX

STAMP PART NO. ON
SMOOTH SURFACE

RESTRICTED

FLOW

3/8 - 18 NPT

1.84

ADJUSTING STEM
(TURN CLOCKWISE TO
INCREASE RESTRICTION)

1

7

2

10

9

8

6

5

4

3

.85

FREE FLOW

BAR STOCK

CONFIGURATION

When ordering parts,

please specify:

• Number Stamped on Side

• Description (CV Flow Control)

• Part Description

• Material

ITEM DESCRIPTION QTY

1 Cap (SS only) 1

2 Nut, Jam 1

3 Seat 1

4 Gasket 1

5 Disc 1

6 Spring 1

7 Ring, Retaining 1

8 Stem 1

9 O-Ring 1

10 Housing 1

CLA-VAL

Copyright Cla-Val 2009 Printed in USA Specifications subject to change without notice.

P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website cla-val.com

©

PL-CV (R-1/09)

PARTS LIST

Cla-Val Product

Identification

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
by including 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 Plates

For product identification, cast-in body markings are
supplemented by identification plates as illustrated on
this page. The plates, depending on type and size of
product, are mounted in the most practical position. It

is extremely important that these identification
plates are not painted over, removed, or in any
other way rendered illegible.

INLET
EINTRITT
ENTREE
ENTRADA

SIZE &
CAT NO.

STOCK
NO.

CODE

MFD. BY CLA-VAL
NEWPORT BEACH, CALIF, U.S.A.

RESERVOIR

END

I

N

L

E

T

I

N

L

E

T

SIZE &
CAT NO.

STOCK
NO.

FLOW

MFD. BY CLA-VAL NEWPORT BEACH, CALIF. U.S.A.

CODE

C

®

™

SIZE &
CAT NO.

STOCK
NO.

SPRING
RANGE

MFD. BY CLA-VAL NEWPORT BEACH, CALIF. U.S.A.

SIZE &
CAT NO.

STOCK
NO.

CODE

MFD. BY CLA-VAL

NEWPORT BEACH, CALIF.

U.S.A.

C

®

™

DO NOT REMOVE

THIS VALVE HAS BEEN MODIFIED
SINCE ORIGINAL SHIPMENT FROM
FACTORY. WHEN ORDERING PARTS
AND/ OR SERVICE SUPPLY DATA FROM
THIS PLATE & ALL OTHER PLATES ON
ORIGINAL VALVE.

REDUCED PRESSURE BACKFLOW PREVENTION DEVICE

STK.
NO.

SER.
NO.

CAT.

NO.

RP

-4

CLA-VAL

NEWPORT BEACH, CA.

This brass plate appears on valves sized 21/2" and larger

and is located on the top of the inlet flange.

These two brass plates appear on 3/8", 1/2", and 3/4" size

valves and are located on the valve cover.

These two brass plates appear on threaded valves

1" through 3" size or flanged valves 1" through 2".

It is located on only one side of the valve body.

This brass plate appears on altitude valves only and is

found on top of the outlet flange.

This brass plate is used to identify pilot control valves.

The adjustment range is stamped into the plate.

This tag is affixed to the cover of the pilot control valve.

The adjustment range appears in the spring range section.

This aluminum plate is included in pilot system

modification kits and is to be wired to the new pilot

control system after installation.

This brass plate is used on our backflow prevention

assemblies. It is located on the side of the Number Two

check (2" through 10"). The serial number of the

assembly is also stamped on the top of the inlet flange of

the Number One check.

How to Order

HOW TO ORDER

Because of the vast number of possible configurations and
combinations available, many valves and controls are not
shown in published product and price lists. For ordering
information, price and availability on product that are not listed,
please contact your local Cla-Val office or our factory office
located at:

SPECIFY WHEN ORDERING

• Model Number • Valve Size

• Globe or Angle Pattern • Threaded or Flanged

• Adjustment Range • Body and Trim Materials
(As Applicable) • Optional Features

• Pressure Class

UNLESS OTHERWISE SPECIFIED

• Globe or angle pattern are the same price

• Ductile iron body and bronze trim are standard

• X46 Flow Clean Strainer or X43 “Y” Strainer are included

• CK2 Isolation Valves are included in price on 4" and larger
valve sizes (6" and larger on 600 Series)

P. O. Box 1325

Newport Beach, California 92659-0325

[phone]

FAX [phone]

LIMITED WARRANTY

Automatic valves and controls as manufactured by Cla-Val are warranted
for three years from date of shipment against manufacturing defects in
material and workmanship that develop in the service for which they are
designed, provided the products are installed and used in accordance
with all applicable instructions and limitations issued by Cla-Val.
Electronic components manufactured by Cla-Val are warranted for one
year from the date of shipment.

We will repair or replace defective material, free of charge, that is returned
to our factory, transportation charges prepaid, if upon inspection, the
material is found to have been defective at time of original shipment. This
warranty is expressly conditioned on the purchaser’s providing written
notification to Cla-Val immediate upon discovery of the defect.

Components used by Cla-Val but manufactured by others, are warranted
only to the extent of that manufacturer’s guarantee.

This warranty shall not apply if the product has been altered or repaired by
others, Cla-Val shall make no allowance or credit for such repairs or
alterations unless authorized in writing by Cla-Val.

DISCLAIMER OF WARRANTIES AND
LIMITATIONS OF LIABILITY

The foregoing warranty is exclusive and in lieu of all other
warranties and representations, whether expressed, implied, oral or
written, including but not limited to any implied warranties or
merchantability or fitness for a particular purpose. All such other
warranties and representations are hereby cancelled.

Cla-Val shall not be liable for any incidental or consequential loss,
damage or expense arising directly or indirectly from the use of the
product. Cla-Val shall not be liable for any damages or charges for
labor or expense in making repairs or adjustments to the product.
Cla-Val shall not be liable for any damages or charges sustained in
the adaptation or use of its engineering data and services. No
representative of Cla-Val may change any of the foregoing or
assume any additional liability or responsibility in connection with
the product. The liability of Cla-Val is limited to material
replacements F.O.B. Newport Beach, California.

TERMS OF SALE

ACCEPTANCE OF ORDERS

All orders are subject to acceptance by our main office at Newport Beach, California.

CREDIT TERMS

Credit terms are net thirty (30) days from date of invoice.

PURCHASE ORDER FORMS

Orders submitted on customer’s own purchase order forms will be accepted only
with the express understanding that no statements, clauses, or conditions contained
in said order form will be binding on the Seller if they in any way modify the Seller’s
own terms and conditions of sales.

PRODUCT CHANGES

The right is reserved to make changes in pattern, design or materials when deemed
necessary, without prior notice.

PRICES

All prices are F.O.B. Newport Beach, California unless expressly stated otherwise on
our acknowledgement of the order. Prices are subject to change without notice. The
prices at which any order is accepted are subject to adjustment to the Seller’s price
in effect at the time of shipment. Prices do not include sales, excise, municipal, state
or any other Government taxes. Minimum order charge $75.00.

RESPONSIBILITY

We will not be responsible for delays resulting from strikes, accidents, negligence of
carriers, or other causes beyond our control. Also, we will not be liable for any
unauthorized product alterations or charges accruing there from.

RISK

All goods are shipped at the risk of the purchaser after they have been delivered by
us to the carrier. Claims for error, shortages, etc., must be made upon receipt of
goods.

EXPORT SHIPMENTS

Export shipments are subject to an additional charge for export packing.

RETURNED GOODS

1. Customers must obtain written approval from Cla-Val prior to returning any
material.

2. Cla-Val reserves the right to refuse the return of any products.

3. Products more than six (6) months old cannot be returned for credit.

4. Specially produced, non-standard models cannot be returned for credit.

5. Rubber goods such as diaphragms, discs, o-rings, etc., cannot be returned for
credit, unless as part of an unopened vacuum sealed repair kit which is less
than six months old.

6. Goods authorized for return are subject to a 35% ($75 minimum) restocking
charge and a service charge for inspection, reconditioning, replacement of
rubber parts, retesting, repainting and repackaging as required.

7. Authorized returned goods must be packaged and shipped prepaid to Cla-Val,
1701 Placentia Avenue, Costa Mesa, California 92627.

PO Box 1325 Newport Beach CA 92659-0325

Phone: [phone] Fax: [phone]

C

LA-VAL

CLA-VAL CANADA CLA-VAL EUROPE

4687 Christie Drive
Beamsville, Ontario
Canada LOR 1B4
Phone: [phone]
Fax: [phone]

Chemin dés Mesanges 1
CH-1032 Romanel/
Lausanne, Switzerland
Phone: [phone]
Fax: [phone]

©COPYRIGHT CLA-VAL 2007 Printed in USA

Specifications subject to change without notice.

www.cla-val.com

E-Product I.D. (R-12//07)

Represented By:

Complete Replacement Diaphragm Assemblies for 100-01 and 100-20 Hytrol Main Valves

For: Hytrol Main Valves with Ductile Iron, Bronze Trim Materials—125/150 Pressure Class Only.
FACTORY ASSEMBLED
Includes: Stem, Disc Guide, Disc, Disc Retainer, Spacer Washers, Diaphragm, Diaphragm Washer
and Stem Nut.

3/8"

1/2" - 3/4"

1"

1 1/4"-1 1/2"

2"

2 1/2"

3"
4"

(Also 81-01 )
(Also 81-01 )

N/A
N/A
N/A
N/A
N/A
N/A

C2524B

C2525J

6"

8"
10"
12"
14"
16"
20"
24"

40456G
45276D

81752J

85533J
89067D
89068B

N/A
N/A

33273E
40456G
45276D

81752J

N/A

85533J
89068B
89068B

Valve

Size

Valve

Size

49097K
C2518D
C2520K

C2522 F

C2524B
C2523D

C2525J

33273E

100-01 100-20

Diaphragm Assembly

Stock Number

100-01 100-20

Diaphragm Assembly

Stock Number

3/8"

1/2" - 3/4"

1"

1 1/4" - 1 1/2"

2"

2 1/2"

3"
4"
6"

8"
10"
12"
14"
16"
20"
24"

(Also 81-01 )
(Also 81-01 )

N/A
N/A
N/A
N/A
N/A
N/A

9169805A

9169812G

9169813E
9169815K
9817901D
9817902B

N/A
9817903K
9817905E
9817905E

3/8"

1/2" - 3/4"

1"

1 1/4” - 1 1/2"

2"

2 1/2"

3"
4"
6"
8"

9169806J
9169807G
9169808E
9169809C
9169810A

9169817F
9169818D
9169819B
9169820K
9169834A

N/A
N/A
N/A
N/A
N/A

N/A
9169810A
9169818D
9169819B
9169820K

Valve

Size

Valve

Size

9169801K
9169802H
9169803F
9169804D
9169805A
9169811J
9169812G
9169813E
9169815K
9817901D
9817902B
9817903K
9817904H
9817905E

N/A

9817906C

100-01 100-20

Repair Kit

Stock Number

100-01 100-20

Repair Kit

Stock Number

Repair Kits for 100-01/100-20 Hytrol Valves

For: Hytrol Main Valves—125/150 Pressure Class Only.
Includes: Diaphragm, Disc (or Disc Assembly) and spare Spacer Washers.

(Also 81-01 )
(Also 81-01 )

REPAIR KITS

When ordering, please give complete nameplate data of the valve and/or control being repaired.

MINIMUM ORDER CHARGE APPLIES.

Buna-N®Standard Material

Viton (For KB Valves)

MODEL

INSTALLATION / OPERATION / MAINTENANCE

Repair Kits for 100-04/100-23 Hy-Check Main Valves

For: Hy-Check Main Valves—125/150 Pressure Class Only
Includes: Diaphragm, Disc and O-Rings and full set of spare Spacer Washers.

Larger Sizes: Consult Factory.

Repair Kits for 100-02/100-21 Powertrol and 100-03/100-22 Powercheck Main Valves

For: Powertrol and Powercheck Main Valves—125/150 Pressure Class Only
Includes: Diaphragm, Disc (or Disc Assembly) and O-rings and full set of spare Spacer Washers.

Repair Kits for Pilot Control Valves (In Standard Materials Only)

Includes: Diaphragm, Disc (or Disc Assembly), O-Rings, Gaskets or spare Screws as appropriate.

Repair Assemblies (In Standard Materials Only)

CLA-VAL

Copyright Cla-Val 2009 Printed in USA Specifications subject to change without notice.

P.O. Box 1325 • Newport Beach, CA 92659-0325 • Phone: [phone] • Fax: [phone] • E-mail: [e-mail] • Website cla-val.com

©

N-RK (R-4/09)

Valve

Size

Kit Stock Number

100-02

Valve

Size

Kit Stock Number

100-02 & 100-03 100-21 & 100-22

3

⁄8”

9169901H

2

1

⁄2”

9169910J N/A

1

⁄2” &3⁄4”

9169902F

3”

9169911G 9169905J

1” 9169903D

4”

9169912E 9169911G

1

1

⁄4” &11⁄2”

9169904B

6”

9169913C 9169912E

2” 9169905J

8”

99116G 9169913C

10”

9169939H 99116G

12"

9169937B 9169939H

Valve

Size

Kit Stock Number

Valve

Size

Kit Stock Number

100-04 100-23 100-04 100-23

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

BUNA-N

®

(Standard Material)

VITON (For KB Controls)

Pilot

Control

Kit

Stock

Number

Pilot

Control

Kit

Stock

Number

Pilot

Control

Kit

Stock

Number
CDB 9170006C CFM-7 1263901K CDB-KB 9170012A
CDB-30 9170023H CFM-7A 1263901K CRA-KB N/A
CDB-31 9170024F CFM-9 12223E

CRD-KB (w/bucking spring)

9170008J

CDB-7 9170017K

CRA (w/bucking spring)

9170001D CRL-KB 9170013J

CDH-2 18225D

CRD (w/bucking spring)

9170002B CDHS-2BKB 9170010E

CDHS-2 44607A

CRD (no bucking spring)

9170003K CDHS-2FKB 9170011C
CDHS-2B 9170004H CRD-18 20275401K CDHS-18KB (no bucking spring) 9170009G
CDHS-2F 9170005E CRD-22 98923G

102C-KB

1726202D
CDHS-3C-A2 24657K CRL (55F, 55L) 9170007A
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 CV 9170019F

Buna-N

®

CDS-6A 20349401C X105L (O-ring) 00951E
CFCM-M1 1222301C 102B-1 1502201F CRD Disc Ret. (Solid) C5256H
CFM-2 12223E 102C-2 1726201F CRD Disc Ret. (Spring) C5255K

102C-3 1726201F

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

Larger Sizes: Consult Factory.