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 6110-01-187-2822
NSN 5930-01-396-8625
NSN 4140-01-493-4487
NSN 6610-01-388-8664
NSN 6650-01-632-3501
NSN 5930-01-535-7476
NSN 6645-01-305-9135
NSN 5950-00-153-6209
NSN 6110-01-490-5463
NSN 5975-00-711-8805
NSN 6145-00-246-9776
NSN 6320-01-618-3835