Idiomas disponibles
Idiomas disponibles
STEP 3
Tighten Bolts - Establish a uniform pressure over the fl ange
face by tightening the bolts in 5 ft. lbs. increments following a 180° opposing
sequence as shown in the table above. Care must be taken to avoid
"BENDING" the fl ange when joining a Spears
BOLT TORQUE
Valve
Torque
Size
Value
1/2" to 1-1/2" 12 ft. lbs.
2" to 4"
25 ft. lbs.
DO NOT USE BOLTS TO BRING TOGETHER
IMPROPERLY MATED FLANGES.
MAINTENANCE & SERVICE INSTRUCTIONS
The valve Seat and internal O-ring Seals can be easily accessed from the
Bonnet Nut for replacement or internal cleaning and service. CAUTION:
Before servicing, the system should be shut down, depressurized and
drained.
STEP 1
Remove the plastic Retaining Clip located at top of Bonnet.
Remove Bonnet Nut by turning counterclockwise direction. Pull Bonnet
assembly, then Disc & Seat assembly from body branch.
ring sealed Plug from Bonnet and remove Plug O-ring. Remove Bonnet
O-ring from Bonnet assembly. Remove fl at, washer-style Seat from Disc
stub. Examine O-rings and Seat for debris or damage. Clean or replace as
necessary, then reinstall on components.
Plug
Retaining Clip
Bonnet
Disc
Body
fl ange together.
®
Remove O-
Plug O-ring
Bonnet Nut
Bonnet O-ring
Seat
5
STEP 2
Reinstall Disc & Seat assembly into valve, Seat end fi rst. Thread
O-ring sealed Plug into bonnet until snug. Apply a mild soap & water solution
to Bonnet O-ring and slide the Bonnet assembly into the Valve body. Install
Bonnet Nut, turning in a clockwise direction until properly seated. Reinstall
Retaining Clip on groove in Bonnet at top of Nut.
QUICK FLUSH CLEANOUT
STEP 1
Depressurize system
and remove O-ring sealed Drain
plug.
STEP 2
Flush through valve to
remove debris.
STEP 3
Reinstall O-ring sealed
Plug. Tighten snug.
PRECAUTIONS AND WARNINGS
CAUTION: The system must be designed and installed so as not to pull the
components in any direction. Pipe system must be cut and installed in such
a manner as to avoid all stress loads associated with bending, pulling, or
shifting. All piping systems must be supported.
CAUTION: BEFORE THE VALVE IS CYCLED, all dirt, sand grit or other
material shall be fl ushed from the system. This is to prevent scarring of
internal components; e.g. ball, cup, wedge, seats, etc.
WARNING: System should not be operated or fl ushed out at fl ow velocities
greater than 5 feet per second.
NOT FOR USE WITH COMPRESSED AIR OR GAS
WARNING: Do not use compressed air or gas to test any PVC or CPVC
thermoplastic piping product or system, and do not use devices propelled
by compressed air or gas to clear the systems. These practices may result
in explosive fragmentation of system piping and components causing bodily
injury or death.
All air must be bled from the system during the initial fl uid fi ll. Pressure testing
of the system must not be made until all solvent cement joints have properly
cured. Initial pressure testing must be made at approximately 10% of the
system hydrostatic pressure rating to identify potential problems prior to
testing at higher pressures.
SPEARS
MANUFACTURING COMPANY
®
CORPORATE OFFICE
15853 Olden Street, Sylmar, CA 91342
PO Box 9203, Sylmar, CA 91392
(818) 364-1611 • www.spearsmfg.com
© Copyright 2005 Spears
®
Manufacturing Company. All Rights Reserved.
Printed in the United States of America 05/05.
YC-3A-0505
