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STEP 3
Wrench Make-Up
Threaded plastic pipe and valve
components must always be installed
using commercially available strap
wrenches. Do not use conventional
pipe wrenches which can damage
plastic piping materials.
Apply wrench make-up of no more than
one to two turns beyond finger tight
thread engagement. Care must be
taken in final positioning so as to avoid
the need to "back-up" the wrenched
assembly.
FLANGED CONNECTIONS
Once a flange is attached to the pipe or valve, the method of joining two flanges
are as follows:
STEP 1
Use of well lubricated bolts & flat
washers are required. Use an
anti-seize lubricant such as IMS
Copper Flake.
STEP 2
With a 1/8" gasket having a shore "A" durometer of approximately 60 in place,
align the bolt holes of the mating flanges by rotating the ring into position. Insert
all bolts, washers, and nuts.
Tighten the nuts by hand
until they are snug
AT THIS TIME, BE SURE THAT THE FLANGE AND GASKET
SURFACES ARE FLUSH AND SQUARELY ALIGNED.
STEP 3
Tighten Bolts - Establish a uniform pressure over the flange 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 flange when
joining a Spears
flange together. DO NOT USE BOLTS TO BRING TOGETHER
®
IMPROPERLY MATED FLANGES.
BOLT TORQUES
Valve Size
Torque Value
1/2" to 1-1/2"
12 ft. lbs.
2" to 4"
25 ft. lbs.
6" Venturied
40 ft. lbs.
5
PRECAUTIONS AND WARNINGS
FOR ALL VALVE INSTALLATIONS
CAUTION: The system must be designed and installed so as not to pull the
valve in any direction. Pipe must be cut and installed in such a manner as to
avoid all stress loads associated with bending, pulling, or shifting. Valve must
be supported.
CAUTION: Before the valve is cycled, all dirt, sand, grit or other material shall
be flushed from the system. This is to prevent scarring of internal components;
e.g., ball, cup, wedge, seats, etc.
LUBRICATION WARNING: Some Lubricants, including vegetable oils, are
known to cause stress cracking in thermoplastic materials. Formulation
changes by lubricant manufacturers may alter compatibility of previously
acceptable materials and are beyond our control. Lubricants are not required
for installation of Spears
WARNING: Systems must not be operated or flushed out at flow 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
SYSTEMS. THESE
EXPLOSIVE FRAGMENTATION OF SYSTEM PIPING AND
COMPONENTS CAUSING BODILY INJURY OR DEATH. All
air must be bled from the system during initial fluid fill. 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..
© Copyright 2010 Spears
Printed in the United States of America 05/10.
FLUSH
Valves.
®
PRACTICES
MAY
SPEARS
MANUFACTURING COMPANY
®
CORPORATE OFFICE
15853 Olden Street, Sylmar, CA 91342
PO Box 9203, Sylmar, CA 91392
(818) 364-1611 • www.spearsmfg.com
Manufacturing Company. All Rights Reserved.
®
RESULT
IN
BV-3A-1006
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