Pipe fittings shall be compatible with the applicable pipe materials.
Plastic pipe, fittings, and solvent cement shall meet NSF 14 and shall be
NSF listed for the service intended. Plastic pipe, fittings, and solvent
cement used for potable hot and cold water service shall bear the NSF seal
"NSF-PW." Polypropylene pipe and fittings shall conform to dimensional
requirements of Schedule 40, Iron Pipe size. Pipe threads (except dry
seal) shall conform to ASME B1.20.1. Grooved pipe couplings and fittings
shall be from the same manufacturer. Material or equipment containing lead
shall not be used in any potable water system. In line devices such as
water meters, building valves, check valves, meter stops, valves, fittings
and back flow preventers shall comply with PL 93-523 and NSF 61, section 8.
End point devices such as drinking water fountains, lavatory faucets,
kitchen and bar faucets, residential ice makers, supply stops and end point
control valves used to dispense water for drinking shall meet the
requirements of NSF 61, section 9. Hubless cast-iron soil pipe shall not
be installed underground, under concrete floor slabs or in crawl spaces
below kitchen floors. Plastic pipe shall not be installed in air plenums.
Plastic pipe shall not be installed in a pressure piping system in
buildings greater than three stories including any basement levels.
2.1.1
Pipe Joint Materials
Grooved pipe and hubless cast-iron soil pipe shall not be used under
ground. Joint and gasket materials shall conform to the following:
a.
Coupling for Hubless Cast-Iron Pipe: For hub and spigot type
ASTM A 74, AWWA C606. For hubless type: CISPI 310
b.
Coupling for Steel Pipe:
AWWA C606.
c.
Couplings for Grooved Pipe: [Ductile Iron ASTM A 536 (Grade
65-45-12)] [Malleable Iron ASTM A 47/A 47M, Grade 32510] [Copper
ASTM A 536].
d.
Flange Gaskets: Gaskets shall be made of non-asbestos material in
accordance with ASME B16.21. Gaskets shall be flat, 1.6 mm 1/16
inch thick, and contain aramid fibers bonded with Styrene
Butadiene Rubber (SBR) or Nitro Butadiene Rubber (NBR). Gaskets
shall be full face or self centering flat ring type. Gaskets used
for hydrocarbon service shall be bonded with NBR.
f.
Brazing Material:
Brazing material shall conform to AWS A5.8,
BCup-5.
g.
Brazing Flux: Flux shall be in paste or liquid form, be
appropriate for use with brazing material, be lead free, have a
100 percent flushable residue, contain slightly acidic reagents,
contain potassium bromides, and contain fluorides.
h.
Solder Material:
Solder metal shall conform to ASTM B 32.
i.
Solder Flux: Flux shall be liquid form, non-corrosive, and shall
conform to ASTM B 813, Standard Test 1.
j.
Polytetrafluoroethylene Tape, for use with Threaded Metal or
Plastic Pipe, and Distilled Water-Piping: ASTM D 3308.
k.
Rubber Gaskets for Cast-Iron Soil Pipe and Fittings (hub and
spigot type and hubless type): ASTM C 564.
SECTION 15405A
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