Historical

IAPMO/ANSI Z1157-2014e1

Ball Valves

This standard covers ball valves in sizes NPS-1/8 to NPS-4, with minimum rated working pressures of 860 kPa (125 psi) at 23 ¦C (73¦F), intended for use in water supply and distribution systems and specifies requirements for materials, physical characteristics, performance, testing, and markings.

CONTENT PROVIDER
International Association of Plumbing and Mechanical Officials [iapmo]

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