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 5950-00-188-9839
NSN 4140-01-322-8133
NSN 6685-01-437-8425
NSN 5999-01-440-0185
NSN 2925-01-210-6531
NSN 5975-01-107-0379
NSN 6145-01-308-3497
NSN 5920-01-274-8565
NSN 5999-01-641-3384
NSN 6130-00-501-5207
NSN 5950-00-127-8261
NSN 5920-01-513-2558