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 6685-01-114-0102
NSN 5910-01-228-4730
NSN 5960-00-584-4553
NSN 5895-01-350-5558
NSN 4140-00-728-3097
NSN 6610-01-202-7404
NSN 5895-01-362-7651
NSN 6110-01-277-7440
NSN 2925-00-833-9466
NSN 6650-01-360-3848
NSN 6645-01-129-3954
NSN 6320-00-857-4073