• Observe all safety precautions.
• Systems should be installed in a good and workmanlike manner consistent with normal industry standards and in conformance with all local plumbing, fire and building code requirements. Failure to follow proper installation practices, procedures or techniques can result in system failure, property damage or personal injury.
• Pipes and fittings should be used for their intended purpose as defined by local plumbing and building codes and the applicable ASTM standards.
• Follow manufacturers’ instructions for all related products.
1. CUT PIPE : • Cut pipe square. As joints are sealed at the base of the fitting socket. An angled cut may result in joint failure.
• Acceptable tools include miter saw, mechanical cut off saw or wheel cutter. Wheel type cutters must employ a blade designed for plastics.
2. REMOVE BURR AND BEVEL : • Remove all burr from inside and outside of pipe with a knife-edge, file, or deburring tool. Chamfer(bevel) the end of the pipe 10° -15°
CLEAN : • Remove surface dirt, grease, or moisture with a clean dry cloth.
3. DRY FIT : • With light pressure, pipe should go one third to one half of the way into the fitting socket. Pipes and fittings that are too tight or too loose should not be used.
4. APPLICATOR : • Use an applicator that is one half the pipe diameter. • Too large an applicator will force excessive cement into the inside of small diameter fittings. Too small an applicator will not apply sufficient cement to large diameter systems.
5. CEMENT : Apply a full even layer of cement to the outside of a pipe and medium layer of cement to the inside of a fitting.
6. JOIN PIPE AND FITTINGS : • Assemble pipe and fitting socket till it contacts socket bottom. Give pipe a quarter turn. Hold pipe and fitting together until the pipe does not back out.
• Remove excessive cement from the exterior A properly made joint will show a continuous bead of cement around the perimeter.
N.B : Primers must be used in solvent cement joints of uPVC plastic pipe and fittings for size above2".
uPVC pipes and fittings can be installed underground, since
these piping systems are flexible systems,proper attention should be given to
burial condition. The stiffness of the piping system is affected by sidewall
support, soil compaction, and the condition of the trench, trench bottoms
should be smooth and regular in either undisturbed soil or a layer of compacted
backfill. Pipe must lie evenly on this surface throughout the entire length of
its barrel, Excavation, bedding and backfill should be in accordance with the
provision of the local Plumbing Code having jurisdiction.
The following trenching and burial procedures should be used
to protect the piping systems.
1. The trench should be excavated to ensure the sides will
be stable under all working conditions.
2. The trench should be wide enugh to provide adequate
room for the following :
A. Jointing the pipe in the trench.
B. Snacking the pipe from side or side to Compensate for expansion
C. Filling and compacting the side fills.
between the pipe and trench wall must be wider than the compaction equipment
used in the compaction of the backfill. Minimum width shall not be less than the backfil.Minimum width
shall not be less than the
greater of either the pipe outside diameter times 1.25 plus 12 inches.Trench width may be different
if approved by the design engineer.
3. The trench bottom should be smooth, free of rocks and
debris, continuous and provide uniform support. If ledge rock, harden or large
boulders are encountered, the trench bottom should be padded with bedding of
compacted granular material to a thickness should be installed as required by
4. Trench depth is determined by the pipe’s service
requirements. Plastic pipe should always be installed at least below the frost
level. The minimum cover for lines subject to heavy overhead traffic is 24
5. A smooth, trench bottom is necessary to support the pipe
over its entire length on firm stable material. Blocking should be used charge
pipe grade or to intermittently support pipe over low sections in the trench.