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Float operated valves -- Specification for piston type float operated valves (copper alloy body) (excluding floats)
This Part of BS 1212 specifies materials, dimensions, tolerances and performance requirements for piston type float operated valves (copper alloy body) of nominal sizes ⅜, ½, ¾, 1, 1¼, 1½ and 2 with six patterns of body, designated 1, II, III, IV, V and VI, intended for use with floats complying with BS 1968 and BS2456.
NOTE 1. The nominal sizes correspond with the pipe size of the thread on the inlet shank as specified in BS 2779. The nominal sizes ⅜ and 1 ¾ are formed by making special inlets on the Sizes ½ and 1 ½ respectively. Nominal sizes ⅜ and ½ are made in body form pattern I or II.
NOTE 2. The titles of the publications referred to in this standard are listed on the inside back cover.
Specifies materials, workmanship, dimensions and performance requirements for piston type valves of nominal size 3/8, 1/2, 3/4, 1, 11/4, 11/2 and 2.
Intended for use with floats complying with the requirements of BS 1968 and BS 2456.
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