Deburr & Bevel
Regardless of the cutting method used, burrs will be created, which must be
removed. All pipe ends should be beveled at 10° to 15°. A deburring tool is
recommended, however a fi le may be used in its place as shown.
Wipe away all loose dirt and moisture from pipe ends and saddle body.
STEP 4
Primer Branch Connection - Primer is necessary to penetrate & soften
both pipe and saddle connector surfaces in order for the solvent cement to
properly bond. Using a brush or applicator size no less than 1/2 the pipe
diameter, apply a liberal coat of primer with a circular, scrubbing motion to the
inside socket of the Hot-Tap Saddle, until the surface is softened and semi-
fl uid. This will occur in 5 to 15 seconds depending on size and temperature.
Apply primer to the outside of new pipe end in the same manner extending
application area to slightly beyond the insertion depth of the HotTap Saddle
socket.
APPLY A SECOND COAT TO BOTH PIPE AND SOCKET. TAKE EXTRA
CARE THAT NO SOLVENTS ARE ALLOWED TO COME IN CONTACT
WITH THE HOT-TAP CUTTER OR THREAD.
Check the penetration and softening by scraping the primed surfaces. A few
thousandths of the semi-fl uid surface should easily be removed.
REPEAT PRIMER APPLICATION IF NECESSARY.
THE MOST FREQUENT CAUSE OF JOINT FAILURE IS INADEQUATE
PRIMER PENETRATION AND SOFTENING OF BONDING SURFACES
DURING THE WELDING OPERATION.
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STEP 5
Solvent Cement Branch Connection - Solvent Cement must be applied
IMMEDIATELY to the primed surfaces 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 primed socket surface,
then apply an additional liberal coat again to the pipe.
STEP 6
Set & Cure Branch Connection Joint - Immediately following the application
of solvent cement, and before it begins to set, insert the pipe end into the
Hot-tap Saddle 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 pipe does not back off of socket. Use a cloth
to remove any excess cement from the exterior juncture.
Allow joint to cure according to solvent
cement manufacturer's instructions.
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