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 5965-01-180-5468
NSN 5905-01-396-9400
NSN 5915-01-513-2531
NSN 5910-01-486-0877
NSN 6145-00-914-0517
NSN 5915-01-124-2088
NSN 5910-00-316-3537
NSN 4140-01-122-3036
NSN 5996-01-414-7463
NSN 6145-01-206-3539
NSN 6610-01-409-1781
NSN 6610-01-097-5073