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Primer is necessary to penetrate and soften both pipe and valve socket
STEP 4
surfaces in order for the solvent cement to properly bond. THE MOST FREQUENT CAUSE
OF JOINT FAILURES ARE INADEQUATE SOLVENT PENETRATION & SOFTENING OF
BONDING SURFACES DURING THE WELDING OPERATION.
1. Using a brush or applicator size no less
than ½ the pipe diameter, apply a liberal
coat of primer with a scrubbing motion
to the valve socket until the surface is
softened and semi-fl uid. This may take
5 to 15 seconds depending on size and
temperature (larger diameters and lower
temperatures will increase required time).
2. Apply primer to pipe in the same manner,
extending application area to slightly more
than the insertion depth into the valve
socket.
3. Apply a second coat to both the valve socket and the pipe.
4. Check penetration and softening by scraping the primed surfaces. A few thousandths of
the semi-fl uid surface must be easily removed. Repeat primer application if necessary.
Solvent Cement must be applied IMMEDIATELY to the primed surfaces
STEP 5
before the primer dries, in an alternating 3-
coat application. Using a brush or applicator
no less than 1/2 the pipe diameter, apply a
liberal coat of solvent cement to the primed
pipe surfaces. Next, apply a light to medium
coat to the End Connector Socket primed
surface. If a "NET FIT" was experienced
during the dry fit check (See Step 3) then
apply an additional liberal coat again to the
pipe surface.
Immediately following the
STEP 6
application of solvent cement, and before it
begins to set, insert the End Connector Socket over the pipe end, push with a 1/4 twisting
motion to evenly distribute the solvent cement within the joint. A full bead of solvent cement
should form around the circumference of the joint. Hold joint together for approximately 30
seconds to make sure that the End Connector Socket does not back off of pipe. Use a cloth
to remove any excess cement from the exterior juncture of the pipe and End Connector.
Repeat STEP 6 to attach opposite end
connector to pipe.
Allow joint to cure
according to solvent cement manufacturer's instructions.
STEP 7
Attach Valve Body to End Connector Socket and
begin to tighten Union Nut.
DO NOT USE ANY TYPE OF THREAD
SEALANTS. "HAND TIGHTEN ONLY."
BE SURE THAT THE FACE OF THE END CONNECTOR SOCKET IS SQUARELY
ALIGNED (FLUSH) WITH THE VALVE BODY AND IS FLUSH AGAINST THE O-RING.
PIPE
UNION NUT
ONE-WAY
MOTION
PIPE
UNION NUT
ONE-WAY
MOTION
5
Attach fi nal Union Nut to Valve Body.
DO NOT USE THE REMAINING UNION NUT TO DRAW TOGETHER ANY GAPS
BETWEEN THE END CONNECTOR AND THE VALVE BODY.
Initial Set & Cure Time must be followed in accordance with the solvent
STEP 8
cement manufacturer's instructions. Pressure test the system only after all solvent cement
joints have fully cured. If any leaks are found at End Connectors during pressure check,
use a strap wrench to tighten Union Nut 1/4 turn to stop the leak.
DO NOT OVER TIGHTEN AS DAMAGE MAY OCCUR.
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.
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 09/08.
USCV-3A-0605
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