Page 65 - 2018_IPC

WATER SUPPLY AND DISTRIBUTION

mm) CPVC/AL/CPVC pipe and CPVC fit- is greater. Piping shall not be bent beyond straightening of
tings. the curvature of the coil. Bends shall be prohibited within
4. The CPVC fittings are manufactured in accor- 10 pipe diameters of any fitting or valve. Stiffener inserts
dance with ASTM D2846. installed with compression-type couplings and fittings
shall not extend beyond the clamp or nut of the coupling
605.16 PEX plastic. Joints between cross-linked polyeth- or fitting.
ylene plastic tubing and fittings shall comply with Sections
605.16.1 through 605.16.3. 605.19 Polypropylene (PP) plastic. Joints between PP plas-
tic pipe and fittings shall comply with Section 605.19.1 or
605.16.1 Flared joints. Flared pipe ends shall be made by 605.19.2.
a tool designed for that operation.
605.19.1 Heat-fusion joints. Heat-fusion joints for poly-
605.16.2 Mechanical joints. Mechanical joints shall be propylene pipe and tubing joints shall be installed with
installed in accordance with the manufacturer’s instruc- socket-type heat-fused polypropylene fittings, butt-fusion
tions. Fittings for cross-linked polyethylene (PEX) plastic polypropylene fittings or electrofusion polypropylene fit-
tubing shall comply with the applicable standards listed in tings. Joint surfaces shall be clean and free from moisture.
Table 605.5 and shall be installed in accordance with the The joint shall be undisturbed until cool. Joints shall be
manufacturer’s instructions. PEX tubing shall be factory made in accordance with ASTM F2389.
marked with the appropriate standards for the fittings that
the PEX manufacturer specifies for use with the tubing. 605.19.2 Mechanical and compression sleeve joints.
Mechanical and compression sleeve joints shall be
605.16.3 Push-fit joints. Push-fit joints shall conform to installed in accordance with the manufacturer’s instruc-
ASSE 1061 and shall be installed in accordance with the tions.
manufacturer’s instructions.
605.20 Polyethylene/aluminum/polyethylene (PE-AL-PE)
605.17 Steel. Joints between galvanized steel pipe and fit- and cross-linked polyethylene/aluminum/cross-linked
tings shall comply with Sections 605.17.1 through 605.17.3.
polyethylene (PEX-AL-PEX). Joints between PE-AL-PE or
605.17.1 Threaded joints. Threads shall conform to PEX-AL-PEX pipe and fittings shall comply with Section
ASME B1.20.1. Pipe-joint compound or tape shall be 605.20.1.
applied on the male threads only.
605.20.1 Mechanical joints. Mechanical joints shall be
605.17.2 Mechanical joints. Joints shall be made with an installed in accordance with the manufacturer’s instruc-
approved elastomeric seal. Mechanical joints shall be tions. Fittings for PE-AL-PE and PEX-AL-PEX as
installed in accordance with the manufacturer’s instruc- described in ASTM F1974, ASTM F1281, ASTM F1282,
tions. CSA B137.9 and CSA B137.10 shall be installed in accor-
605.17.3 Grooved and shouldered mechanical joints. dance with the manufacturer’s instructions.
Grooved and shouldered mechanical joints shall comply 605.21 PVC plastic. Joints between PVC plastic pipe and fit-
with ASTM F1476, shall be made with an approved elas- tings shall comply with Sections 605.21.1 through 605.21.3.
tomeric seal and shall be installed in accordance with the 605.21.1 Mechanical joints. Mechanical joints on water
manufacturer’s instructions. Such joints shall be exposed pipe shall be made with an elastomeric seal conforming to
or concealed.
ASTM D3139. Mechanical joints shall not be installed in
605.18 PE plastic. Joints between polyethylene plastic pipe above-ground systems unless otherwise approved. Joints
or tubing and fittings shall comply with Sections 605.18.1 shall be installed in accordance with the manufacturer’s
through 605.18.4. instructions.
605.18.1 Flared joints. Flared joints shall be permitted 605.21.2 Grooved and shouldered mechanical joints.
where so indicated by the pipe manufacturer. Flared joints Grooved and shouldered mechanical joints shall comply
shall be made by a tool designed for that operation. with ASTM F1476, shall be made with an approved elas-
605.18.2 Heat-fusion joints. Joint surfaces shall be clean tomeric seal and shall be installed in accordance with the
and free from moisture. Joint surfaces shall be heated to manufacturer’s instructions. Such joints shall be exposed
melt temperature and joined. The joint shall be undis- or concealed.
turbed until cool. Joints shall be made in accordance with 605.21.3 Solvent cementing. Joint surfaces shall be clean
ASTM D2657. and free from moisture. A purple primer that conforms to
605.18.3 Mechanical joints. Mechanical joints shall be ASTM F656 shall be applied. Solvent cement not purple
installed in accordance with the manufacturer’s instruc- in color and conforming to ASTM D2564 or CSA B137.3
tions. shall be applied to all joint surfaces. The joint shall be
made while the cement is wet and shall be in accordance
605.18.4 Installation. Polyethylene pipe shall be cut
square, with a cutter designed for plastic pipe. Except with ASTM D2855. Solvent-cement joints shall be permit-
where joined by heat fusion, pipe ends shall be chamfered ted above or below ground.
to remove sharp edges. Kinked pipe shall not be installed. 605.21.4 Threaded joints. Threads shall conform to
The minimum pipe bending radius shall be not less than ASME B1.20.1. Where pipe is to be threaded, the pipe
30 pipe diameters, or the minimum coil radius, whichever shall have a wall thickness of not less than Schedule 80.

48 2018 INTERNATIONAL PLUMBING CODE ®
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