IS 7326 Pt.1-1992 Pressure pipe and turbine inlet butterfly valves for hydroelectric power stations and systems - Part 1 Structural and hydraulic design standards
This standard ( Part 1 ) applies to reinforced solid rubber resilient sealing, rust resisting steel seated, double-flanged butterfly valves and lays down the criteria for the structural and hydraulic design of butterfly valves for penstock and turbine inlet valve applications.
IS 7326 Pt.1-1992 history
1992IS 7326 Pt.1-1992 Pressure pipe and turbine inlet butterfly valves for hydroelectric power stations and systems - Part 1 Structural and hydraulic design standards