BSI - BS 1212-1
Ballvalves (Excluding Floats) Part 1: Piston Type
|Publication Date:||16 November 1953|
|ICS Code (Water supply systems):||91.140.60|
|ICS Code (Other valves):||23.060.99|
Seven sizes, for attachment of floats to BS 1968, BS 2456. ?, ½, ¾, 1, 1¼, 1½, and 2 in. Provision for removable seats, different sized orifices for different pressure and flow. Materials, quality, workmanship, dimensions, performance test, mechanical strength test of levers. Computed flow through seat orifices at various heads of water appended.