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Description / Abstract:
General
(a) This Standard covers manually operated thermoplastic valves
in nominal valve sizes ½ through 12. These valves are intended for
use below ground in thermoplastic fuel gas distribution mains and
service lines. The maximum operating pressure (MOP) at which such
distribution piping systems may be operated is in accordance with
the Code of Federal Regulations (CFR) Title 49, Part 192,
Transportation of Natural and Other Gas by Pipeline; Minimum Safety
Standards, for temperature ranges of −20°F to 140°F (−29°C to
60°C).
(b) This Standard sets qualification requirements for each basic
valve design as a necessary condition for demonstrating conformance
to this Standard.
(c) This Standard sets requirements for newly manufactured
valves for use in below-ground piping systems for fuel gas
[includes synthetic natural gas (SNG)] and liquefied petroleum (LP)
gases (distributed as a vapor, with or without the admixture of
air) or mixtures thereof