CLA-VAL 92-01 Owner's manual

92-01/692-01
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800-876-0036 847-356-0566

Distributed By: M&M Control Service, Inc.
www.mmcontrol.com/claval-index.php
800-876-0036 847-356-0566

Distributed By: M&M Control Service, Inc.
www.mmcontrol.com/claval-index.php
800-876-0036 847-356-0566

Distributed By: M&M Control Service, Inc.
www.mmcontrol.com/claval-index.php
800-876-0036 847-356-0566

Description
The CIa-VaI Model 100-01 Hytrol Valve is a main valve for
CIa-VaI Automatic Control Valves. It is a hydraulically operated,
diaphragm-actuated, globe or angle pattern valve.
This valve consists of three major components; body, diaphragm
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 operating
pressure from line pressure.
Installation
1. Before valve is installed, pipe lines should be flushed of all
chips, scale and foreign matter.
2. It is recommended that either gate or block valves be
installed on both ends of the 100-01 Hytrol Valve to facilitate
isoIating the valve for preventive maintenance and repairs.
3. Place the valve in the line with flow through the valve in the
direction indicated on the inlet nameplate. (See “Flow Direction”
Section)
4. Allow sufficient room around valve to make adjustments and
for disassembly.
5. CIa-VaI 100-01 Hytrol Valves operate with maximum efficiency
when mounted in horizontal piping with the cover UP, however,
other positions are acceptable. Due to size and weight of the
cover and internal components of 8 inch and larger valves,
installation with the cover UP is advisable. This makes internal
parts readily accessible for periodic inspection.
6. Caution must be taken in the installation of this valve to insure
that galvanic and/or electrolytic action does not take place. The
proper use of dielectric fittings and gaskets are required in all
systems using dissimilar metals.
7. If a pilot control system is installed on the 100-01 Hytrol Valve,
use care to prevent damage. If it is necessary to remove fittings
or components, be sure they are kept clean and replaced
exactly as they were.
8. After the valve is installed and the system is first pressurized,
vent air from the cover chamber and pilot system tubing by
loosening fittings at all high points.
Tight Closing Operation
When pressure from the valve inlet (or
an equivalent independent operating
pressure) is applied to the diaphragm
chamber the valve closes drip-tight.
Full Open Operation
When pressure in diaphragm chamber
is relieved to a zone of lower pressure
(usually atmosphere) the line pressure
(5 psi Min.) at the valve inlet opens the
valve.
Modulating Action
Valve modulates when diaphragm pres-
sure is held at an intermediate point
between inlet and discharge pressure.
With the use of a Cla-Val. "modulating
control," which reacts to line pressure
changes, the pressure above the
diaphragm is varied, allowing the valve
to throttle and compensate for the
change.
Principles of Operation
Three Way
Pilot Control
Three Way
Pilot Control
Restriction
Modulating
Control
100-01
Hytrol Valve
MODEL
INSTALLATION / OPERATION / MAINTENANCE
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2
Flow Direction
The flow through the 100-01 Hytrol Valve can be in one of two
directions. When flow is “up-and-over the seat,” it is in “normal”
flow and the valve will fail in the open position. When flow is “over-
the seat-and down,” it is in “reverse” flow and the valve will fail in
the closed position. There are no permanent flow arrow markings.
The valve must be installed according to nameplate data.
BRIDGEWALL INDlCATOR
Normal Flow Reverse Flow
Troubleshooting
The following troubleshooting information deals strictly with the
Model 100-01 Hytrol Valve. This assumes that all other compo-
nents of the pilot control system have been checked out and are
in proper working condition. (See appropriate sections in
Technical Manual for complete valve).
Three Checks
The 100-01 Hytrol Valve has only one moving part (the diaphragm
and disc assembly). So, there are only three major types of prob-
lems to be considered.
First: Valve is stuck - that is, the diaphragm assembly is not free
to move through a full stroke either from open to close or vice
versa.
Second: Valve is free to move and can’t close because of a worn
out diaphragm.
Third: Valve leaks even though it is free to move and the
diaphragm isn’t leaking.
Closed isolation valves in control system, or in main line.
Lack of cover chamber pressure.
Diaphragm damaged. (See Diaphragm Check.)
Diaphragm assembly inoperative.
Corrosion or excessive scale build up on valve stem.
(See Freedom of Movement Check)
Mechanical obstruction. Object lodged in valve.
(See Freedom of Movement Check)
Worn disc. (See Tight Sealing Check)
Badly scored seat. (See Tight Sealing Check)
Closed upstream and/or downstream isolation
valves in main line.
Insufficient line pressure.
Diaphragm assembly inoperative. Corrosion or excessive
buildup on valve stem. (See Freedom of Movement Check)
Diaphragm damaged. (For valves in "reverse flow" only)
After checking out probable causes and remedies, the following three checks can be used to diagnose the nature of the
problem before maintenance is started. They must be done in the order shown.
Open Isolation valves.
Check upstream pressure, pilot system, strainer, tubing, valves, or needle
valves for obstruction.
Replace diaphragm.
Clean and polish stem. Inspect and replace any damaged or badly eroded
part.
Remove obstruction.
Replace disc.
Replace seat.
Open isolation valves.
Check upstream pressure. (Minimum 5 psi flowing line pressure differential.)
Clean and polish stem. Inspect and replace any
damaged or badly eroded part.
Replace diaphragm.
Fails to Close
Fails to Open
CAUTION:
Care should be taken when doing the troubleshooting checks on
the 100-01 Hytrol Valve. These checks do require the valve to
open fully. This will either allow a high flow rate through the
valve, or the downstream pressure will quickly increase to the
inlet pressure. In some cases, this can be very harmful. Where
this is the case, and there are no block valves in the system to
protect the downstream piping, it should be realized that the
valve cannot be serviced under pressure. Steps should be
taken to remedy this situation before proceeding any further.
(cast into side of valve body)
SYMPTOM PROBABLE CAUSE REMEDY
Recommended Tools
1. Three pressure gauges with ranges suitable to the instal-
lation to be put at Hytrol inlet, outlet and cover connections.
2. Cla-Val Model X101 Valve Position Indicator. This pro-
vides visual indication of valve position without disassembly
of valve.
3. Other items are: suitable hand tools such as screw-
drivers, wrenches, etc. soft jawed (brass or aluminum) vise,
400 grit wet or dry sandpaper and water for cleaning.
All trouble shooting is possible without removing the valve from the
line or removing the cover. It is highly recommended to permanently
install a Model X101 Valve Position Indicator and three gauges in
unused Hytrol inlet, outlet and cover connections.
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Diaphragm Check (#1 )
1. Shut off pressure to the Hytrol Valve by slowly closing upstream
and downstream isolation valves. SEE CAUTION.
2. Disconnect or close all pilot control lines to the valve cover and
leave only one fitting in highest point of cover open to atmosphere.
3.With the cover vented to atmosphere, slowly open upstream
isolation valve to allow some pressure into the Hytrol Valve body.
Observe the open cover tapping for signs of continuous flow. It is
not necessary to fully open isolating valve. Volume in cover cham-
ber capacity chart will be displaced as valve moves to open posi-
tion. Allow sufficient time for diaphragm assembly to shift posi-
tions. If there is no continuous flow, you can be quite certain the
diaphragm is sound and the diaphragm assembly is tight. If the
fluid appears to flow continuously this is a good reason to believe
the diaphragm is either damaged or it is loose on the stem. In
either case, this is sufficient cause to remove the valve cover and
investigate the leakage. (See “Maintenance” Section for procedure.)
Freedom of Movement Check (#2)
4. Determining the Hytrol Valve’s freedom of movement can be
done by one of two methods.
5. For most valves it can be done after completing Diaphragm
Check (Steps 1, 2, and 3). SEE CAUTION. At the end of step 3
the valve should be fully open.
6. If the valve has a Cla-Val X101 Position Indicator, observe the
indicator to see that the valve opens wide. Mark the point of max-
imum opening.
7. Re-connect enough of the control system to permit the appli-
cation of inlet pressure to the cover. Open pilot system cock so
pressure flows from the inlet into the cover.
8. While pressure is building up in the cover, the valve should
close smoothly. There is a hesitation in every Hytrol Valve closure,
which can be mistaken for a mechanical bind. The stem will
appear to stop moving very briefly before going to the closed posi-
tion. This slight pause is caused by the diaphragm flexing at a
particular point in the valve’s travel and is not caused by a
mechanical bind.
9. When closed, a mark should be made on the X101 Valve posi-
tion indicator corresponding to the “closed” position. The distance
between the two marks should be approximately the stem travel
shown in chart.
10. If the stroke is different than that shown in stem travel chart
this is a good reason to believe something is mechanically restrict-
ing the stroke of the valve at one end of its travel. If the flow does
not stop through the valve when in the indicated “closed” position,
the obstruction probably is between the disc and the seat. If the
flow does stop, then the obstruction is more likely in the cover. In
either case, the cover must be removed, and the obstruction locat-
ed and removed. The stem should also be checked for scale build-
up. (See “Maintenance, section for procedure.)
11. For valves 6” and smaller, the Hytrol Valve’s freedom of move-
ment check can also be done after all pressure is removed from
the valve. SEE CAUTION. After closing inlet and outlet isolation
valves and bleeding pressure from the valve, check that the cover
chamber and the body are temporarily vented to atmosphere.
Insert fabricated tool into threaded hole in top of valve stem, and
lift the diaphragm assembly manually. Note any roughness. The
diaphragm assembly should move smoothly throughout entire
valve stroke. The tool is fabricated from rod that is threaded on
one end to fit valve stem and has a “T” bar handle of some kind
on the other end for easy gripping. (See chart in Step 4 of
“Disassembly” Section.)
12. Place marks on this diaphragm assembly lifting tool when the
valve is closed and when manually positioned open. The distance
between the two marks should be approximately the stem travel
shown in stem travel chart. If the stroke is different than that
shown, there is a good reason to believe something is mechani-
cally restricting the stroke of the valve. The cover must be
removed, and the obstruction located and removed. The stem
should also be checked for scale build-up. (See “Maintenance”
Section for procedure.)
Tight Sealing Check (#3)
13. Test for seat leakage after completing checks #1 & #2 (Steps
1 to 12). SEE CAUTION. Close the isolation valve downstream of
the Hytrol Valve. Apply inlet pressure to the cover of the valve, wait
until it closes. Install a pressure gauge between the two closed
valves using one of the two ports in the outlet side of the Hytrol.
Watch the pressure gauge. If the pressure begins to climb, then
either the downstream isolation valve is permitting pressure to
creep back, or the Hytrol is allowing pressure to go through it.
Usually the pressure at the Hytrol inlet will be higher than on the
isolation valve discharge, so if the pressure goes up to the inlet
pressure, you can be sure the Hytrol is leaking. Install another
gauge downstream of isolating valve. If the pressure between the
valves only goes up to the pressure on the isolation valve
discharge, the Hytrol Valve is holding tight, and it was just the iso-
lation valve leaking.
STEM TRAVEL
(Fully Open to Fully Closed)
Valve Size (inches) Travel (inches)
Inches MM Inches MM
1 1/4 32 0.4 10
1 1/2 40 0.4 10
250 0.615
2 1/2 65 0.7 18
380 0.820
4 100 1.1 28
6 150 1.7 43
8 200 2.3 58
10 250 2.8 71
12 300 3.4 86
14 350 4.0 100
16 400 4.5 114
20 500 5.6 143
24 600 6.7 165
30 800 7.5 190
36 900 8.5 216
COVER CHAMBER CAPACITY
(Liquid Volume displaced when valve opens)
Valve size (inches) Displacement
Gallons Liters
1 1/4 .020 .07
1 1/2 .020 .07
2 .032 .12
2 1/2 .043 .16
3 .080 .30
4 .169 .64
6 .531 2.0
8 1.26 4.8
10 2.51 9.5
12 4.00 15.1
14 6.50 24.6
16 9.57 36.2
20 12.00 45.4
24 29.00 109.8
30 42.00 197.0
36 90.00 340.0
3
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Maintenance
Preventative Maintenance
The Cla-Val Co. Model 100-01 Hytrol Valve requires no lubrication or
packing and a minimum of maintenance. However, a periodic inspec-
tion schedule should be established to determine how the operating
conditions of the system are affecting the valve. The effect of these
actions must be determined by inspection.
Disassembly
Inspection or maintenance can be accomplished without removing
the valve from the line. Repair kits with new diaphragm and disc are
recommended to be on hand before work begins.
WARNING: Maintenance personnel can be injured and equipment
damaged if disassembly is attempted with pressure in the valve. SEE
CAUTION.
1. Close upstream and downstream isolation valves and independ-
ent operating pressure when used to shut off all pressure to the
valve.
2. Loosen tube fittings in the pilot system to remove pressure from
valve body and cover chamber. After pressure has been released
from the valve, use care to remove the controls and tubing. Note and
sketch position of tubing and controls for re-assembly. The schemat-
ic in front of the Technical Manual can be used as a guide when
reassembling pilot system.
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 to be
loosened by driving upward along the edge of the cover with a dull
cold chisel.
On 6” and smaller valves block and tackle or a power hoist can be
used to lift valve cover by inserting proper size eye bolt in place of
the center cover plug. on 8” and larger valves there are 4 holes (5/8”
— 11 size) where jacking screws and/or eye bolts may be inserted
for lifting purposes. Pull cover straight up to keep from damaging
the integral seat bearing and stem.
4. Remove the diaphragm and disc assembly from the valve body.
With smaller valves this can be accomplished by hand by pulling
straight up on the stem so as not to damage the seat bearing.
On large valves, an eye bolt of proper size can be installed in the
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 bearings.
The valve won't work if these are damaged.
5. The next item to remove is the stem nut. Examine the stem
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 residue as possible. Attach a good fitting wrench to the nut
and give 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, the entire diaphragm assembly can be held
by the stem in a vise equipped with soft brass jaws before
removing the stem nut.
The use of a pipe wrench or a vise without soft brass jaws scars
the fine finish on the stem. No amount of careful dressing can
restore the stem to its original condition. Damage to the finish of
the stem can cause the stem to bind in the bearings and the valve
will not open or close.
6. After the stem nut has been removed, the diaphragm assembly
breaks down into its component parts. Removal of the disc from
the disc retainer can be a problem if the valve has been in serv-
ice for a long time. Using two screwdrivers inserted along the out-
side edge of the disc usually will accomplish its removal. Care
should be taken to preserve the spacer washers in water, partic-
ularly if no new ones are available for re-assembly.
7. The only part left in the valve body is the seat which ordinarily
does not require removal. Careful cleaning and polishing of inside
and outside surfaces with 400 wet/dry sandpaper will usually
restore the seat’s sharp edge. If, however, it is badly worn and
replacement is necessary, it can be easily removed.
Seats in valve sizes 1 1/4” through 6” are threaded into the valve
body. They can be removed with accessory X109 Seat Removing
Tool available from the factory. On 8” and larger valves, the seat
is held in place by flat head machine screws. Use a tight-fitting,
long shank screwdriver to prevent damage to seat screws. If upon
removal of the screws the seat cannot be lifted out, it will be nec-
essary to use a piece of angle or channel iron with a hole drilled
in the center. Place it across the body so a long stud can be insert-
ed through the center hole in the seat and the hole in the angle
iron. By tightening the nut a uniform upward force is exerted on
the seat for removal.
NOTE: Do not lift up on the end of the angle iron as this may force
the integral bearing out of alignment, causing the stem to bind.
VALVE STEM THREAD SIZE
Valve Size Thread Size (UNF Internal)
1 1/4"—2 1/2" 10—32
3"—4" 1/4—28
6"—14" 3/8—24
16" 1/2—20
20 3/4-16
24" 3/4-16
30” 3/4-16
36” 3/4-16
COVER CENTER PLUG SIZE
Valve Size Thread Size (NPT)
1 1/4"—1 1/2" 1/4"
2"—3" 1/2"
4"—6" 3/4"
8"—10" 1"
12" 1 1/4"
14" 1 1/2"
16" 2"
20” & 24" 2"
30” & 36” 2”
NUT ANGLE OR CHANNEL IRON
LONG STUD OR BOLT
NUT OR BOLT HEAD
DO NOT
LIFT
VALVE SEAT
VALVE BODY
4
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Lime Deposits
One of the easiest ways to remove lime deposits from the valve
stem or other metal parts is to dip them in a 5-percent muriatic
acid solution just long enough for the deposit to dissolve. This
will remove most of the common types of deposits. CAUTlON:
USE EXTREME CARE WHEN HANDLING ACID. Rinse parts in
water before handling. If the deposit is not removed by acid, then
a fine grit (400) wet or dry sandpaper can be used with water.
Reassembly
1. Reassembly is the reverse of the disassembly procedure. If a
new disc has been installed, it may require a different number of
spacer washers to obtain the right amount of “grip” on the disc.
When the diaphragm assembly has been tightened to a point
where the diaphragm cannot be twisted, the disc should be com-
pressed very slightly by the disc guide. Excessive compression
should be avoided. Use just enough spacer washers to hold the
disc firmly without noticeable compression.
2. MAKE SURE THE STEM NUT IS VERY TIGHT. Attach a good
fitting wrench to the nut and give it a sharp “rap” rather than a
steady pull. Usually several blows are sufficient to tighten the
stem nut for final tightening. Failure to do so could allow the
diaphragm to pull loose and tear when subjected to pressure.
Test Procedure After Valve Assembly
There are a few simple tests which can be made in the field to
make sure the Hytrol Valve has been assembled properly. Do
these before installing pilot system and returning valve to
service. These are similar to the three troubleshooting tests.
1. Check the diaphragm assembly for freedom of movement
after all pressure is removed from the valve. SEE CAUTlON.
Insert fabricated tool into threaded hole in top of valve stem, and
lift the diaphragm assembly manually. Note any roughness,
sticking or grabbing. The diaphragm assembly should move
smoothly throughout entire valve stroke. The tool is fabricated
from rod that is threaded on one end to fit valve stem (See chart
in Step 4 of “Disassembly” section.) and has a “T” Bar handle of
some kind on the other end for easy gripping.
Place marks on this diaphragm assembly lifting tool when the
valve is closed and when manually positioned open. The dis-
tance between the two marks should be approximately the stem
travel shown in stem travel chart. (See “Freedom of Movement
Check” section.) If the stroke is different than that shown, there
is a good reason to believe something is mechanically restricting
the stroke of the valve. The cover must be removed, the obstruc-
tion located and removed. (See “Maintenance” Section for
procedure.)
Inspection of Parts
After the valve has been disassembled, each part should be
examined carefully for signs of wear, corrosion, or any other
abnormal condition. Usually, it is a good idea to replace the rub-
ber parts (diaphragm and disc) unless they are free of signs of
wear. These are available in a repair kit. Any other parts which
appear doubtful should be replaced. WHEN ORDERlNG
PARTS, BE SURE TO GIVE COMPLETE NAMEPLATE DATA,
ITEM NUMBER AND DESCRlPTlON.
NOTE: If a new disc isn’t available, the existing disc can be
turned over, exposing the unused surface for contact with the
seat. The disc should be replaced as soon as practical.
3. Carefully install the diaphragm assembly by lowering the stem
through the seat bearing. Take care not to damage the stem or
bearing. Line up the diaphragm holes with the stud or bolt holes
on the body. on larger valves with studs, it may be necessary to
hold the diaphragm assembly up part way while putting the
diaphragm over the studs.
4. Put spring in place and replace cover. Make sure diaphragm
is Iying smooth under the cover.
5. Tighten cover nuts firmly using a cross-over pattern until all
nuts are tight.
6. Test Hytrol Valve before re-installing pilot valve system.
Due to the weight of the diaphragm assembly this procedure is
not possible on valves 8” and larger. on these valves, the same
determination can be made by carefully introducing a low
pressure-less than five psi) into the valve body with the cover
vented. SEE CAUTION. Looking in cover center hole see the
diaphragm assembly lift easily without hesitation, and then
settle back easily when the pressure is removed.
2. To check the valve for drip-tight closure, a line should be
connected from the inlet to the cover, and pressure applied at the
inlet of the valve. If properly assembled, the valve should hold
tight with as low as ten PSI at the inlet. See “Tight Sealing
Check” section.)
3. With the line connected from the inlet to the cover, apply full
working pressure to the inlet. Check all around the cover for any
leaks. Re-tighten cover nuts if necessary to stop leaks past the
diaphragm.
4. Remove pressure, then re-install the pilot system and tubing
exactly as it was prior to removal. Bleed air from all high
points.
5. Follow steps under “Start-Up and Adjustment” Section in
Technical Manual for returning complete valve back to service.
5
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1
5
8
10
14 16
6
17
7
9
OUTLETINLET
GLOBE PATTERN
9
26
27
12
15
14
16
INLET
OUTLET
ANGLE PATTERN
22
23
13
12
14
10
11 15
23
TOP VIEW
8" - 24" SEAT DETAIL
1 1/4" - 6" SEAT DETAIL 16" COVER DETAIL
4
24
2
25
13
31
28
30
29
5
14
3
Item Description
1. Pipe Plug
2. Drive Screws (for nameplate)
3. Hex Nut (8” and larger)
4. Stud (8” and larger)
5. Cover Bearing
6. Cover
7. Stem Nut
8. Diaphragm Washer
9. Diaphragm
10. Spacer Washers
11. Disc Guide
12. Disc Retainer
13. Disc
14. Stem
15. Seat
16. Body
17. Spring
22. Flat Head Screws (8” and larger)
23. Seat O-Ring
24. Hex head Bolt (1 1/4” thru 4”)
25. Nameplate
26. Upper Spring Washer (Epoxy coated valves only)
27. Lower Spring Washer (Epoxy coated valves only)
28. Cover Bearing Housing (16” only)
29. Cover O-Ring (16’” only)
30. Hex Bolt (16” only)
31. Pipe Cap (16” only)
PARTS LIST
6
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100-01
Hytrol Valve Service Data
MODEL
INSTALLATION / OPERATION / MAINTENANCE
Description 100-01 Hytrol Valve The CIa-VaI Model 100-01 Hytrol Valve is a main valve for CIa-VaI Automatic Control Valves. It is a hydraulically operated, diaphragm-actuated, globe or angle pattern valve. This valve consists of three major components; body, diaphragm 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 operating pressure from line pressure.
Description 100-20 600 Series Hytrol Valve The CIa-VaI Model 100-20 Hytrol Valve (600 Series main valve) have only one part -the body- that is different from standard 100 Series Cla-Val main valve parts. The remaining parts of the 600 series main valve are standard Cla-Val main valve parts. All serv- ice and maintenance information for the standard 100 Series main valves also apply to the 600 series main valves. The most important thing to remember when ordering main valve repair kits and replacement parts, except for the body, all other parts are going to be for a smaller size main valve. Cla- Val identifies main valve parts with the flange size of the stan- dard 100 Series main valve. Refer to the "Main Valve Sizes” chart below.
HYTROL Service Data
HYTROL SIZE Stem
Travel
Cover Capacity
Displacement Valve Stem
Thread
UNF-Internal
Cover
Center
Plug
NPT
Cover Nut or Bolt Cover
Lifting
Holes
UNC
Cover Plug Cover Torque Stem Nut** Stem Nut Torque
(ft. Lbs.)
100-01 100-20 Thread
(Bolt) Socket Qty Thread Socket ft. Lbs. in. Lbs. Thread Socket
(Long)
inches mm inches mm inches mm Gallons Liters Lubed DRY
1" 25 0.3 81/4" 1/4" - 20 (B) 7/16" 8448 3/8" - 24 46
1 1/4" 32 0.4 10 0.020 0.07 10 - 32 1/4" 5/16" - 18 (B) 1/2" 8896 7/16" -20 610 1 1/2" 40 0.4 10 0.020 0.07 10 - 32 1/4" 5/16" - 18 (B) 1/2" 8896 7/16" -20 610
2" 50 0.6 15 0.032 0.12 10 - 32 1/2" 3/8" - 16 (B) 9/16" 83/8" 7/16" 12 1/2" - 20 3/4" 10 15
2 1/2" 65 0.7 18 0.043 0.16 10 - 32 1/2" 7/16" - 14 (B) 5/8" 81/2" 9/16" 20 5/8" - 18 15/16" 21 30
3" 80 4" 100 0.8 20 0.080 0.30 1/4 - 28 1/2" 1/2" - 13 (B) 3/4" 81/2" 9/16" 30 5/8" - 18 15/16" 21 30
4" 100 6" 150 1.1 23 0.169 0.64 1/4 - 28 3/4" 3/4" - 10 (B) 1 1/8" 83/4" 5/8" 110 3/4" - 16 1 1/16" 40 60
6" 150 8" 200 1.7 43 0.531 2.00 3/8 - 24 3/4" 3/4" - 10 (B) 1 1/8" 12 3/4" 5/8" 110 7/8" - 14 1 5/16" 85 125 8" 200 10" 250 2.3 58 1.26 4.80 3/8 - 24 1" 3/4" - 10 1 1/4" 16 5/8" - 11 1" 13/16" 110 1 1/8" -12 1 13/16" 125 185
10" 250 12" 300 2.8 71 2.51 9.50 3/8 - 24 1" 7/8" - 9 1 7/16" 20 3/4" - 10 1" 13/16" 160 1 1/2" -12 1 7/8" 252 375 12" 300 16" 400 3.4 86 4.0 15.10 3/8 - 24 1 1/4" 1 1/8" - 7 1 13/16" 20 3/4" - 10 1" 13/16" 390 1 1/2" -12 2 1/2" 270 400
14" 350 3.9 99 6.5 24.60 3/8 - 24 1 1/2" 1 1/4" - 7 2" 20 1" - 8 1" 13/16" 545 1 1/2" -12 2 1/2" 280 420
16" 400 20", 24" 600 4.5 114 9.6 36.20 1/2 - 20 2" 1 1/4" - 7 2" 20 1" - 8 1" 13/16" 545 2" - 16 3" 500 750
20" 500 5.63 143 12 45.40 3/4 - 16 1 1/2" 1 3/8" - 6 2 1/8" 24 1" - 8 1" 13/16" 670 2 1/4" - 16 3 1/2" 930 N/R
24" 600 30" 800 6.75 165 29.0 108.80 3/4 - 16* 3/4" 1 1/2" - 12 2 3/8" 24 1 1/8"- 7 1" 13/16" 800 3" - 12 Special 1350 N/R
* Adapter
p/n 2594101E
inside 1/4" - 28"
Grade 5 Bolts
"Heavy" Grade Nuts
Tighten cover nuts in a "star" cross-over pattern
** Must Use ONLY
Cla-Val Supplied part
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COVER PIPE PLUG
COVER BEARING
SPRING
STEM NUT
DIAPHRAGM WASHER
DISC RETAINER
BODY
*SPACER WASHERS
DISC GUIDE
SEAT
PIPE PLUG
STEM
SEAT O-RING
STUD
8" and Larger
*
DIAPHRAGM
*
DISC
*
Repair Parts
Seat Screw
8" and Larger
(Globe
or
Angle)
PIPE PLUG
HEX NUT
8" and Larger
Cover Bolt
6" and Smaller
KO DISC GUIDE
KO SEAT
KO Anti-Cavitation Trim Option
N-100-01 (R-5/09)
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: [email protected] •Website cla-val.com
©
BOLT/NUT TORQUING PROCEDURES ON VALVE COVERS
4
BOLTS
6
BOLTS
8
BOLTS
12
BOLTS
16
BOLTS
20
BOLTS
4
3
2
1
65
4
3
2
1
8
7
6
5
4
3
2
1
0
9
8
7
6
5
4
3
2
1
12
11
10
9
8
7
6
5
4
3
2
1
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
20
19
18
17
16
15
14
13
12
11
Follow this procedure when reassembling MAIN Valve: 1. Tightens bolts/nuts in a “Star” or “Cross-Over” pattern following the numbers shown above to insure that cover seats evenly on the diaphragm material and body. 2. Torque the bolt/nuts in three stages with a "Star" or "Cross-Over" pattern
for each stage:
A. To approximately 10% of final torque. B. To approximately 75% of final torque. C. To final required torque.
3. Valves that are to be tested to 375 PSI or higher should be retorqued
after 24 hours.
100-01 Hytrol Main Valve Assembly
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UNDERSTANDING THE 600 SERIES VALVES
In 1987, Cla-Val introduced the Model 100-20 Hytrol as the basic
main valve for the 600 Series of automatic control valves. To
identify all new valves using the 100-20 Hytrol, an existing cata-
log number is modified. Making a 600 Series catalog number is
simply done by using a "6" in front of the two digit catalog num-
bers or replacing the "2" with a "6" in three digit catalog num-
bers. Current schematics reflect both catalog numbers together
separated by a slash ( i.e. - 90-01/690-01, 58-02/658-02, 210-
01/610-01, etc). Since these two valves 'share' the same catalog
number and schematic, they provide the same function in a sys-
tem. The only difference between the two valves is the relative
capacity of the two main valve series.
The 100-01 Hytrol is the basic main valve for Cla-Val automatic
control valves. This valve is the current version of the Clayton
Hytrol valve design originated in 1936. The 100-01 Hytrol is
designed as a full flow area valve. This means that the inlet,
seat and outlet openings are the same size. Thus, the pressure
drop is kept to a minimum for this globe style design.
The 100-20 Hytrol valve has all of the basic features and advan-
tages of the original 100-01 Hytrol. Only one part has been
changed - the body. It is designed with different size inlet, seat
and outlet openings. The 100-20 Hytrol has inlet and outlet
flanges one valve size larger than the seat opening size. This
results in what is sometimes called a ''reduced port' main valve.
For example, a 4" 100-20 valve has a 3" seat. Note: valve size
is always determined by the flange size. The following chart
compares the 100-01 and the 100-20 main valves.
600 Series Hytrol Valve
100-20
MODEL
INSTALLATION / OPERATION / MAINTENANCE
SERVICE AND MAINTENANCE OF 600 SERIES
VALVES
The 600 series main valves have only one part -the body- that is
different from standard 100 Series Cla-Val main valve parts. The
remaining parts of the 600 series main valve are standard Cla-
Val main valve parts. All service and maintenance information
for the standard 100 Series main valves in this manual also
apply to the 600 series main valves.
The most important thing to remember when ordering main valve
repair kits and replacement parts, except for the body, all other
parts are going to be for a smaller size main valve. Cla-Val iden-
tifies main valve parts with the flange size of the standard 100
Series main valve. Refer to the "Main Valve Sizes Comparison"
chart. For example, if you are servicing a 6" 100-20 Hytrol and
needed a repair kit, you would order a repair kit for a 4" 100-01
Hytrol. This kit is also suitable for a 6" 100-20 Hytrol. Complete
Technical Manuals include a repair kit data sheet N-RK that
shows this relationship.
When you order repair parts, it is a good idea to include valve
nameplate data (size, catalog number, and part number) and
description of the parts desired. Do this to be sure parts will fit
the valve you are working on and not be too big for it. Pilot con-
trols and repair kits maintenance information remain the same
for 100 or 600 Series valves.
Cla-Val Main Valves
Catalog Number
The 100-20 Hytrol is available only in ductile iron, 150 and 300
pressure class, and Bronze trim standard. Available extra cost
main valve options include stainless steel trim, epoxy coating,
Dura-Kleen stem, Delrin sleeved stem, and high temperature rub-
ber parts. All four basic main valves have a 600 Series version
available with all of the same benefits and size relationships.
The following chart shows the relationship of Cla-Val main valve
catalog numbers.
Catalog Name
Hytrol
Powertrol
Powercheck
Hycheck
Circa 1936
100 (Angle =2100)
100P & 100PA
100PC & 100PCA
181
100-Series
100-01
100-02
100-03
100-04
600 Series
100-20
100-21
100-22
100-23
(Reduced Internal Port)
Basic Main Valve Size Comparison
Globe Pattern Valves
Flange Size (inch) Seat Size
100-01 (100 Series) 100-20 (600 Series)
3 3 2
4 4 3
6 6 4
8 8 6
10 10 8
12 12 10
14 14 ----
16 16 12
18 ---- 16
20 20 16
24 24 16
30 30 24
36 36 30
42 ---- 36
48 ---- 36
Angle Pattern Valves
Flange Size (inch) Seat Size
100-01 (100 Series) 100-20 (600 Series)
4 4 3
6 6 4
8 8 6
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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: [email protected] •Website cla-val.com
©
N-100-20 (R-5/09)
100-20 PARTS LIST
NO. DESCRIPTION
1 Pipe Plug
2 Drive Screws (for nameplate)
3 Hex Nut (8" and larger)
4 Stud (8" and larger)
5 Cover Bearing
6 Cover
7 Stem Nut
8 Diaphragm Washer
9 Diaphragm
10 Spacer Washers
11 Disc Guide
12 Disc Retainer
13 Disc
14 Stem
15 Seat
16 Body
17 Spring
22 Flat Head Screws (10" and larger)
23 Seat O-Ring
24 Hex Bolt (3 " Thru 6")
25 Nameplate (Mounted on inlet flange)
26 Upper Spring Washer (Epoxy coated valves only)
27 Lower Spring Washer (Epoxy coated valves only)
28 Cover Bearing Housing (20" & 24" & 30")
29 Cover Bearing Housing O-Ring (20"& 24" & 30")
30 Hex Bolt (20" & 24")
31 Pipe Cap (20" & 24 & 30"")
11
14
12434
5
17
16
26
14
78
9
27
14
13
22
12
15
31
28
5
30
29
10" — 24" SEAT DETAIL 20" — 24" COVER DETAIL
TOP VIEW
12
13
15
OUTLET
GLOBE
INLET
ANGLE
INLET
6
8
9
2
25
3" — 6" COVER DETAIL
23
11
WHEN ORDERING PARTS, BE SURE TO GIVE COMPLETE
NAMEPLATE DATA, ITEM NUMBER AND DESCRIPTION.
10
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When ordering parts, please specify:
• All Nameplate Data
• Item Number
• Description
• Recommended Spare Parts
Strainer and Orifice Assembly
X44A
BRONZE BODY — S.S. ORIFICE
1/8 NPT 3/8 NPT
3/4
3/4
3 3/8
235
4
3/8 NPT
8
7
6
1
2 1/4 MAX.
7/8
Inlet Outlet
X44A
STOCK NO.
71310-01
-02
-03
-04
-05
-06
* -07
-08
-09
-10
ORIFICE DIA.
.031
.046
.062
.078
.093
.109
.125
.140
.156
.187
ORIFICE PLUG
PART # (ITEM 5)
94132-01
-02
-03
-04
-05
-06
-07
-08
-09
-10
*Standard
3/8" x 3/8"
ITEM
1
2
3
4
5
6
7
8
DESCRIPTION
Body
Plug, Top
"O" Ring, Plug Top
Screen
Orifice Plug
Plug, Pipe
Strainer Plug
"O" Ring, Strainer Plug
MATERIAL
Red Brs.
Brass
Syn. Rub.
Monel
Delrin
Brass
S.S.
Syn. Rub.
QTY.
1
1
1
1
1
1
1
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: [email protected] •Website cla-val.com
©
P-X44A (R-4/09)
PARTS LIST
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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 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
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 installa-
tion. 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 deliv-
ery 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 posi-
tions. 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: [email protected] •Website cla-val.com
©
N-CRD (R-4/09)
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
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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
AA
67
When ordering parts specify:
• All nameplate data
• Item Description
• Item number
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: [email protected] •Website cla-val.com
©
PL-CRD (R-4/09)
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
1Cap PL 67628J
2Adjusting Screw BRS 7188201D
3Jam Nut (3/8-16) SS 6780106J
4* Machine Screw (Fil.Hd.) 8 Req'd 303 6757821B
5Cover BRS C2544K
6Nameplate Screw SS 67999D
7Nameplate BRS C0022001G
8Spring Guide 302 71881H
Spring Guide (20 - 105 psi) 303 205620F
9Spring (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
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DESCRIPTION
The CRL Pressure Relief Control is a direct acting, spring loaded,
diaphragm type relief valve. It may be used as a self-contained valve or
as a pilot control for a Cla-Val Main valve. It opens and closes within
very close pressure limits.
INSTALLATION
The CRL Pressure Relief Control may be installed in any position. The
control body (7) has one inlet and one outlet port with a side pipe plug
(24) at each port. These plugs are used for control connections or gauge
applications. The inlet in the power unit body (6) is the sensing line port.
A flow arrow is marked on the body casting.
OPERATION
The CRL Pressure Relief Control is normally held closed by the force of
the compression spring above the diaphragm; control pressure is applied
under the diaphragm.
When the controlling pressure exceeds the spring setting, the disc is lifted
off its seat, permitting flow through the control.
When controlling pressure drops below spring setting, the spring returns
the control to its normally closed position.
ADJUSTMENT PROCEDURE
The CRL Pressure Relief Control can be adjusted to provide a relief set-
ting at any point within the range found on the nameplate.
Pressure adjustment is made by turning the adjustment screw (9) to vary
the spring pressure on the diaphragm. Turning the adjustment screw
clockwise increases the pressure required to open the valve.
Counterclockwise decreases the pressure required to open the valve.
When pressure adjustments are complete the jam nut (10) should be
tightened and the protective cap (1) replaced. If there is a problem of
tampering, lock wire holes have been provided in cap and cover. Wire
the cap to cover and secure with lead seal.
DISASSEMBLY
The CRL Pressure Relief Control does not need to be removed from the
line for disassembly. Make sure that pressure shut down is accompanied
prior to disassembly. If the CRL is removed from the line for disassembly
be sure to use a soft jawed vise to hold body during work.
Refer to Parts List Drawing for Item Numbers.
1. Remove cap (1), loosen jam nut (10) and turn adjusting
screw counterclockwise until spring tension is relieved.
2. Remove the eight screws (4) holding the cover (3) and
powerunit body (6). Hold the cover and powerunit together
and place on a suitable work surface.
See NOTE under REASSEMBLY.
3. Remove the cover (3) from powerunit body (6). The spring
(12) and two spring guides (11).
4. Remove nut (13) from stem (19) and slide off the belleville washer
(14), the upper diaphragm washer (15) and the diaphragm (16).
5. Pull the stem (19) with the disc retainer assembly (21) through the
bottom of powerunit. The lower diaphragm washer (17) will slide off
of stem top.
6. Remove jam nut (23) and disc retainer assembly (21) from stem.
Use soft jawed pliers or vise to hold stem. The polished surface of
stem must not be scored or scratched.
7. The seat (22) need not be removed unless it is damaged. If removal
is necessary use proper size socket wrench and turn counterclock
wise.
Note: Some models have an integral seat in the body (7).
INSPECTION
Inspect all parts for damage, or evidence of cross threading. Check
diaphragm and disc retainer assembly for tears, abrasions or other dam-
age. Check all metal parts for damage, corrosion or excessive wear.
REPAIR AND REPLACEMENT
Minor nicks and scratches may be polished out using 400 grit wet or dry
sandpaper fine emery or crocus cloth. Replace all O-rings and any dam-
aged parts.
When ordering replacement parts, be sure to specify parts list item num-
ber and all nameplate data.
REASSEMBLY
In general, reassembly is the reverse of disassembly. However, the fol-
lowing steps should be observed:
1. Lubricate the O-Ring (18) with a small amount of a good grade of
waterproof grease, (Dow Corning 44 medium grade or equal).
Use grease sparingly and install O-ring in powerunit body (6).
2. Install stem (19) in powerunit body (6). Use a rotating motion with
minimum pressure to let stem pass through O-ring.
Do Not Cut O-Ring.
3. Install O-ring (5) at top of stem (19). Place lower diaphragm
washer (17) on the stem with the serrated side up. Position
diaphragm (16), upper diaphragm washer (15), with serration down,
and belleville washer (14) with concave side down.
4. Position powerunit body (6) as shown on parts list drawing (top view).
5. Continue reassembly as outlined in disassembly steps 1 through 3.
Pressure Relief Control
CRL
Note: Item (4) Screw will have a quantity of 8 for the 0-75 and 20-200psi
design and a quantity of 4 for the 100-300psi design. Item (25) Screw is
used on the 100-300psi design only. Install item (25), before item (4) for
preload of item (12) spring.
SYMPTOM PROBABLE CAUSE REMEDY
Fails to open. Controlling pressure
too low.
Back off adjusting
screw until valve
opens.
Fails to open with
spring compression
removed.
Mechanical obstruc-
tion, corrosion, scale
build-up on stem.
Disassemble,
locate,and remove
obstruction, scale.
Leakage from cover
vent hole when con-
trolling pressure is
applied.
Diaphragm Damage Disassembly replace
damaged
diaphragm.
Fails to close with
spring compressed.
Mechanical obstruc-
tion.
Disassemble, locate
and remove
obstruction.
Fails to close. No spring compres-
sion.
Re-set pressure
adjustment.
Loose diaphragm
assembly.
Tighten upper
diaphragm washer.
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: [email protected] •Website cla-val.com
©
N-CRL (R-4/09)
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1/2" & 3/4" PRESSURE RELIEF CONTROL
CRL
Ajusting Screw
(3/8" - 16UNF THREAD)
9
1
10
3
11
12
14
13 11
822 23 7
18
19
21
INLET
1/8 - 27 NPT
SENSING
CONNECTION
(TYP.)
7.44
MAX
.71
OUTLET
20
6
2
0 TO 75 AND
20 TO 200 PSI
DESIGN
5
17
16
15
4
1A
9
10
3
11
12
11
7
2
100 To 300 psi Design
.71
ADJUSTING SCREW
(1/2"20UNF THREAD)
10.44
MAX.
When ordering parts please specify:
1. All Nameplate Data
2. Item Part Number
3. Item Description
24
4
45º
3.12
DIA.
TRUE LOCATION OF
SENSING
CONNECTION
(TYP.)
Body with
integral Seat
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: [email protected] •Website cla-val.com
©
PL-CRL (R-4/09)
PARTS LIST
Item Description Material Part Number Part Number Part Number Part Number
0-75 20-105 20-200 100-300
1Cap Plastic 67628J 67628J 67628J 1257601D
1A Cap 100-300 psi Design Plastic 1257601D 1257601D 1257601D 1257601D
2Nameplate Brass -- -- -- --
3Cover Bronze C2544K C2544K C2544K C2544K
4* Screw Fil. Hd. 10-32 x 1.88 (Qty 8) 303 SS 6757867E 6757867E 6757867E 6757867E
5* O-Ring Rubber 00902H 00902H 00902H 00902H
6Body, Powerunit Bronze 7920504D 7920504D 7920504D 7920504D
71/2” Body Bronze C7928K C7928K C7928K C7928K
3/4” Body Bronze C9083B C9083B C9083B C9083B
8* O-Ring, Seat Rubber 00718H 00718H 00718H 00718H
9Screw, Adjusting Brass 7188201D 7188201D 7188201D 82811B
10 Nut Hex (Locking) 303 SS 6780106J 6780106J 6780106J 6780606H
11 Guide, Spring 303 SS 71881H 71881H 71881H 1630301J
12 Spring CHR/VAN 71884B 20632101E 71885J 1630201A
13 Nut, Stem Upper Bronze 73034B 73034B 73034B 73034B
14 Washer, Belleville Steel 7055007E 7055007E 7055007E 7055007E
15 Washer, Diaphragm (upper) 303 SS 71891G 71891G 71891G 71891G
16* Diaphragm Rubber C1505B C1505B C1505B C1505B
17 Washer, Diaphragm (lower) 303 SS 45871B 45871B 45871B 45871B
18* O-Ring, Stem Rubber 00746J 00746J 00746J 00746J
19 Stem 303 SS 8982041F 8982041F 8982041F 8982041F
20* O-Ring, Body Rubber 00767E 00767E 00767E 00767E
21* Retainer Assembly, Disc 303 SS C8964D C8964D C8964D C8964D
22 Seat 303 SS 62187A 62187A 62187A 62187A
23 Nut, Hex, Stem, Lower Bronze 6779806G 6779806G 6779806G 6779806G
24 Pipe Plug Bronze 6784701C 6784701C 6784701C 6784701C
FACTORY SET POINT 50 PSI 60 PSI 60 PSI 100 PSI
REPAIR KIT* 9170007A 9170007A 9170007A 9170007A
CRL
Range PSI
APPROX. INCREASE
FOR EACH
CLOCKWISE TURN OF
ADJUSTING SCREW
0 to 75 8.5 PSI
20 to 105 12.5 PSI
20 to 200 28.0 PSI
100 to 300 18.0 PSI
SIZE SPRING PART
NUMBER
1/2” 0-75 PSI 79222-01E
1/2” 20-105 PSI 79222-05F
1/2” 20-200 PSI 79222-02C
1/2” 100-300 PSI 82809-01D
3/4” 0-75 PSI 79229-01K
3/4” 20-105 PSI 79229-03F
3/4” 20-200 PSI 79229-02H
3/4” 100-300 PSI 86005-01E
For 250-600 PSI Contact Factory
Distributed By: M&M Control Service, Inc.
www.mmcontrol.com/claval-index.php
800-876-0036 847-356-0566

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: [email protected] •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 direc-
tion 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 clear-
ance 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 cross-
threading. 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 dis-
solve. 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 com-
pletely 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.
Distributed By: M&M Control Service, Inc.
www.mmcontrol.com/claval-index.php
800-876-0036 847-356-0566