标准号:IS 4038-1979
发布日期:1979/9/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:This standard covers requirements for flanged and screwed-end foot valves of both swing and lift type for use with centrifugal pumps for water works purposes. It covers screwed-end valves from 25 to 150 mm nominal sizes and flanged-end from 80 to 450 mm nominal sizes.