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 4140-00-317-3443
NSN 5915-01-252-6087
NSN 6320-01-089-9086
NSN 6320-01-431-4359
NSN 6110-01-475-7140
NSN 5915-01-184-2521
NSN 6220-00-565-7001
NSN 6650-01-440-9215
NSN 6135-01-412-5836
NSN 5895-00-424-6296
NSN 6105-01-352-5788
NSN 6645-00-121-7566