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 5990-00-001-1766
NSN 6650-01-606-9209
NSN 5920-01-092-6839
NSN 5920-01-157-9471
NSN 5930-01-476-9023
NSN 5990-01-386-3040
NSN 6645-00-679-8203
NSN 6320-01-342-7548
NSN 5996-00-382-9296
NSN 2925-01-027-1293
NSN 6105-01-324-0405
NSN 5855-01-576-2600