Air Cushion Valves — Component & Material Variant Table

Air cushion valves are hydraulically operated, spring-loaded devices that admit and cushion air during pump start-up and shutdown, protecting rising mains from surge and water hammer. Fabricated steel construction is built to suit site-specific flange and pressure requirements. Used on large-diameter pumping mains in water supply and irrigation schemes.

Source: Data Sheet for Air Cushion Valve (hydraulically operated, spring-loaded, fabricated construction). Design standard: manufacturing to Sarker in-house standard; flange dimensions per IS 1538 Table IV & VI, flat face. Painting: two coats black epoxy. Hydrostatic test pressure — Body: 30 kg/sq.cm; Seat: 25 kg/sq.cm. MS companion flanges, bolts, nuts & gaskets are outside scope of supply.