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 6645-00-735-1481
NSN 5920-01-326-2706
NSN 5996-00-076-2267
NSN 7035-01-255-2332
NSN 6610-01-102-2256
NSN 6610-01-157-0426
NSN 5905-01-656-0919
NSN 6320-01-265-0665
NSN 6320-01-446-8050
NSN 4140-01-536-1104
NSN 6110-01-442-5601
NSN 5945-00-144-8073