IS 11699 : 1986 Specification for Steel Plug Valves for Petroleum, Petrochemical and Allied Industries

1 Scope

Specifies requirements for carbon and alloy steel, lubricatedand soft seated plug valves with flanged, butt-welded, screwed orsocket weld ends in nominal sizes DN 6 to DN 600 as in IS 9520-1980`Nominal sizes for valves.

1.1 This standard covers valves in nominal pressure ratingsClass 150, 300, 600, 900, 1500, 2500 - flanged and butt welding,and Class 800, 1500 - screwed and socket welding.