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 6110-01-484-4475
NSN 6130-01-510-0989
NSN 5895-01-196-0285
NSN 6650-00-446-8787
NSN 5975-01-165-5026
NSN 5930-01-464-4421
NSN 5990-00-027-7508
NSN 6610-00-232-1533
NSN 5895-01-111-2975
NSN 6145-01-478-8899
NSN 5855-00-548-4742
NSN 5999-01-634-0576