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STEP 3
Clean Joint Components
- Wipe away all loose dirt and moisture
from the pipe O.D. and fi tting I.D. with a
clean, dry cotton rag. DO NOT ATTEMPT
TO JOIN WET SURFACES.
STEP 4
Check Joint Interference Fit - An interference between pipe
and valve socket is necessary for proper fusion of the joint. To check, lightly
insert pipe into valve socket. DO NOT FORCE. Interference between pipe
and valve must occur between 1/2 of the socket depth (full interference fi t)
and the socket bottom (net fi t) . Do not use components which improperly
mate.
FULL INTERFERENCE FIT
½
Socket
Depth
Socket
Depth
Apply Primer - Primer is necessary to penetrate and soften
STEP 5
both pipe and valve socket surfaces in order for the solvent cement to
properly bond. THE MOST FREQUENT CAUSE OF JOINT FAILURES IS
INADEQUATE SOLVENT PENETRATION AND SOFTENING OF BONDING
SURFACES DURING THE WELDING OPERATION.
1.
Using a brush or applicator
size no less than 1/2 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.
NET FIT
Socket
Depth
3
4.
Check penetration and softening by
scraping the primed surfaces.
thousandths of the semi-fl uid surface
must be easily removed. Repeat primer
application if necessary.
Apply Solvent Cement
STEP 6
IMMEDIATELY to primed surfaces before the primer dries, in an alternating
3-coat application. Using a brush or applicator size no less than 1/2 the pipe
diameter, apply a liberal coat of solvent cement to the primed pipe surface,
then apply a light to medium coat to the primed valve socket. If a "net fi t" was
experienced during dry fi t check (Step 4), apply an additional coat again to the
pipe surface. BE SURE TO USE A VERY LIBERAL AMOUNT OF SOLVENT
CEMENT ON PIPE.
VALVE INSTALLATION CAUTION: TAKE EXTRA CARE THAT NO PRIMER
OR SOLVENT CEMENT IS ALLOWED TO CONTACT INTERNAL VALVE
COMPONENTS.
STEP 7
Join Components
-
IMMEDIATELY
following
application of cement and before
it starts to set, insert the pipe
into the valve socket with a 1/4
- turn, twisting motion to evenly
distribute cement within the
joint. A full bead of cement must
form around the circumference
of the joint. Hold joint together
for approximately 30 seconds
to make sure the pipe does not
move or back out of the socket.
STEP 8
Remove Excess
Cement - Using a cloth, wipe
clean all excess cement from the
exterior juncture of the pipe and
valve.
STEP 9
Initial Set & Cure Time - Initial Set & Cure Time must be
followed in accordance with the solvent cement manufacturer's instructions.
A few
-
Solvent cement must be applied
4
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