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 5895-01-317-3784
NSN 6320-01-538-0775
NSN 5905-01-530-5583
NSN 6135-01-128-5358
NSN 6110-01-510-6069
NSN 6110-00-288-4179
NSN 6220-01-386-5613
NSN 6135-01-205-5965
NSN 5915-01-148-4899
NSN 5998-01-503-2337
NSN 5975-00-608-1186
NSN 5998-01-645-1256