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 5910-01-424-0225
NSN 5996-01-419-0465
NSN 2925-01-320-0965
NSN 5920-01-378-7548
NSN 6110-01-387-8965
NSN 5925-01-180-8002
NSN 5975-01-127-7595
NSN 6220-01-483-8529
NSN 4140-00-501-7833
NSN 5950-01-381-6393
NSN 6685-01-515-3179
NSN 5975-01-170-4131