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STEP 2
Assemble Joint - 1 to 2 turns
beyond "FINGER TIGHT" are
generally all that is required to
make a sound plastic threaded
connection.
Unnecessary OVERTIGHTENING will cause damage to both pipe and valve.
Follow Step 7 and Step 8 from Solvent Welding Instructions.
STEP 3
Wrench Make Up - Threaded pipe
and valve components must always
be installed using commercially
available strap wrenches. Do not
use conventional pipe wrenches,
which can cause damage to
plastic piping materials. Apply
wrench make-up of no more than
1 to 2 turns beyond fi nger-tight thread engagement. Care must be taken in
fi nal positioning so as to avoid the need to "Back-up" the wrench assembly.
FLANGED CONNECTIONS
Once a fl ange is attached to the pipe or valve, the method of joining two fl anges
are as follows:
STEP 1
Use of well lubricated bolts & fl at
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
fl anges 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.
APPLY THREAD
SEALANT
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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
fl ange together. DO NOT USE BOLTS TO BRING TOGETHER
®
IMPROPERLY MATED FLANGES.
TU 2000 Industrial BV Lockout Handle Operation
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 2008 Spears
Manufacturing Company. All Rights Reserved.
®
Printed in the United States of America 07/08.
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.
TU-3A-0606
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