IS 7326 : Part 1 : 1992 Penstock and turbine inlet butterfly valves for hydropodwer stations and systems: Part 1 Criteria for structural and hydraulic design

1 Scope

This standard (Part 1) applies to reinforced solid rubberresilient sealing, rust resisting steel seated, double-flangedbutterfly valves and lays down the criteria for the structural andhydraulic design of butterfly valves for penstock and turbine inletvalve applications.

2 References

IS 28 :1985 Phosphor bronze ingots andcastings

IS 226 : 1975Structural steel (standard quality)

IS 318 : 1981Leaded tin bronze ingots and castings

IS 1030 : 1982 Carbonsteel castings for general engineering purposes

IS 1570 : 1961Schedules for wrought steels

IS 2002 : 1982 Steelplates for pressure vessels for intermediate andhigh temperature service including boilers

IS 2004 : 1978 Carbonsteel forgings for general engineering purposes

IS 2062 : 1984Weldable structural steel

IS 2708 : 1984 1.5percent manganese steel castings for generalengineering purposes

IS 2856 : 1978 Carbonsteel castings for pressure containing partssuitable for high temperature service (fusion weldingquality)

IS 6911 : 1972Stainless steel plate sheet and strip