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 7035-01-629-6645
NSN 5999-01-058-4881
NSN 5930-01-578-6958
NSN 6685-01-585-3413
NSN 5990-00-518-3195
NSN 5935-00-354-2096
NSN 5905-01-421-4421
NSN 4140-01-390-6348
NSN 6610-01-364-0294
NSN 6110-00-510-8155
NSN 6320-01-246-4390
NSN 6145-01-648-1491