Rebuild Kit Instructions
REBUILD KIT
CHECK VALVE
LOW PRESSURE STEAM SERVICE
3/4 OR 1 NPT Ċ 1I ORIFICE
MAINTENANCE
WARNING: To prevent the possibility of death,
serious injury or property damage, depressurize
valve and vent fluid to a safe area before servicing
the valve
Note: It is not necessary to remove the valve from the pipeline for
repairs.
INSTALLATION OF REBUILD KIT
Valve Disassembly (Refer to Figure 1)
1. Disassemble valve in an orderly fashion using exploded view for
identification and placement of parts.
2. Unscrew end cap from valve body.
3. Remove end cap gasket, return spring and disc holder
assembly from valve body.
4. All parts are now accessible for cleaning or replacement. If
parts are worn or damaged, install a complete rebuild kit.
CAUTION: To ensure proper valve operation,
install all parts supplied in rebuild kit. Do not mix old
and new parts.
No. 513700
Form No.V7440
ORDERING INFORMATION
FOR REBUILD KITS
Parts marked with an asterisk (*) in the exploded view are supplied in
Rebuild Kits. When Ordering Rebuild Kits for valves, order the
Rebuild Kit number stamped on the valve nameplate. If the number
of the kit is not visible, order by indicating the number of kits
required, and the Catalog Number and Serial Number of the valve(s)
for which they are intended.
Indicates Parts Supplied
In Rebuild Kit
end cap
end cap
gasket
Valve Reassembly
1. Reassemble valve using exploded view for identification and
placement of parts.
2. Lubricate end cap gasket with DOW CORNINGr 200 Fluid
lubricant or an equivalent high-grade silicone fluid.
3. Install new disc holder assembly and return spring in valve body.
4. Position end cap gasket on end cap.
5. Hand thread end cap with gasket onto valve body as far as
possible, then torque to 175$25 in-lbs [19,8$2,8Nm].
WARNING: To prevent the possibility of
death, serious injury or property damage,
check valve for proper operation before
returning to service. Also perform internal
seat and external leakage tests with a
nonhazardous, noncombustible fluid.
6. Restore line pressure valve.
7. After maintenance is completed, operate the valve a few times
to be sure of proper operation.
return
spring
disc holder
assembly
valve body
Figure 1. Check valve.
MM
1777 East Henrietta Road, Rochester New York 14623-3133 Tel:716-475-1400 Fax:716-272-5297
Printed in U.S.A.
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