BS 1212-1: 1990 : Float operated valves — Part 1. Specification for piston type float operated valves (copper alloy body) (excluding floats)
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This Part of BS 1212 specifies materials, dimensions, tolerance and performance requirements for piston type float operated valves (copper alloy body) of nominal sizes 3/8, 1/2, 1.1/2 and 2 with six patterns of body designated I, II II IV, V and VI, intended for use with floats complying with BS 1968 and BS 2456.