Valve size 3 in.; disc is free to rotate to avoid localized wear
A valve permitting flow in one direction only. It does not have a stem, except when equipped with a lever and weight and has no pressure adjustment. It may be inline or cartridge (manifold) design.
Classification: Check valves of steel
NSN 6145-01-494-8591
NSN 6610-00-361-6954
NSN 6685-01-388-8956
NSN 5910-01-378-3131
NSN 5855-00-411-8688
NSN 5915-01-501-5895
NSN 5920-01-141-6885
NSN 5990-00-348-1423
NSN 6145-01-124-4513
NSN 6130-01-393-9540
NSN 5930-01-139-3975
NSN 6110-00-791-3951