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 2925-00-215-4954
NSN 6650-00-071-0612
NSN 5835-01-005-1538
NSN 5905-01-041-2823
NSN 6685-00-111-4172
NSN 6620-00-500-0041
NSN 5935-01-581-4322
NSN 5920-00-717-4490
NSN 6650-01-003-9355
NSN 5930-01-549-6182
NSN 2925-01-327-3069
NSN 6650-01-546-6611