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 5960-01-148-0074
NSN 5905-01-221-8078
NSN 5920-00-258-6822
NSN 5920-00-199-4038
NSN 5930-00-201-9934
NSN 5975-00-424-3403
NSN 5996-01-286-1325
NSN 2925-00-371-2285
NSN 5895-00-284-4835
NSN 2925-00-383-3523
NSN 6220-01-057-3654
NSN 5945-01-045-4807