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Most failures in PVC, CPVC or ABS systems result from improper preparation
and joining of pipe and fittings. The guidelines below must be followed when
installing the venting system. If you have any question about the application or
installation of the PVC, CPVC or ABS venting system, contact the manufacturer,
supplier, or your plumbing professional.
1) Specific cleaners, solvents, primers and cements are available for PVC,
CPVC and ABS pipe. Be sure these materials match the type of pipe to be
installed. Never use all-purpose cements, commercial glues and adhesives
or ABS cement to join PVC or CPVC pipe and fittings.
a) CLEANERS, SOLVENTS, PRIMERS AND CEMENTS ARE
FLAMMABLE. Do not store or use these materials near heat or
open flame, or in the vicinity of other appliances.
2) Use proper cutting, deburring and applicator tools to ensure proper
preparation and joining of pipe and fittings.
a) Cutting Tools
i)
A square cut must be achieved with a miter box saw or pipe cutter to
ensure a proper mating with the female. If a pipe cutter is used, the
burr created at the outer edge of the pipe must be removed.
b) Deburring Tools
i)
A file, knife or plastic deburring tool can be used to remove burrs.
Burrs must be removed from the inside and outside edges of the pipe
to ensure a proper seal.
c) Applicator Tools
i)
A pure bristle paintbrush or roller may be used to apply cement.
Prompt application of the cement is important due its fast drying
properties.
3) Inspection, Cleaning, Priming and Cementing
a) Inspect the pipe inside and out for dirt, dust, moisture or grease etc.
Check pipe and fittings for splits or cracks and replace if necessary.
b)
Clean pipe and fittings are imperative for proper joining. Following
cutting and deburring, wipe away any foreign material with a clean dry
rag. If wiping fails to thoroughly clean surfaces, chemical cleaning is
necessary.
c) Primer must be applied to the pipe surface and fitting socket with a
natural bristle brush. This serves to soften and prepare the PVC or
CPVC for cementing.
Vent Pipe Preparation and Joining (continued)-
VENT PIPE PREPARATION AND JOINING
42
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