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.
NSN 6320-01-291-2023
NSN 6130-00-528-7838
NSN 5965-01-046-9619
NSN 6150-00-489-2450
NSN 6650-01-170-4397
NSN 6685-01-333-4007
NSN 5895-01-005-6320
NSN 6110-01-623-0714
NSN 5999-01-475-0594
NSN 5835-01-342-7975
NSN 5895-00-522-7935
NSN 4140-00-958-1252