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 4140-01-420-6263
NSN 5895-01-080-1657
NSN 5930-01-472-3532
NSN 2925-01-222-7764
NSN 5905-01-397-2651
NSN 6135-01-396-4900
NSN 6150-00-593-5199
NSN 5945-00-549-2694
NSN 6110-01-033-1153
NSN 5950-00-275-9257
NSN 5895-01-273-3919
NSN 6320-00-701-0437