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 5905-01-252-6775
NSN 6685-00-215-8513
NSN 7035-01-513-9502
NSN 5975-01-048-9301
NSN 6650-01-202-8014
NSN 5920-00-455-9743
NSN 6130-00-222-1167
NSN 6240-00-017-9006
NSN 2925-01-026-1000
NSN 5895-01-067-7957
NSN 6145-01-310-5897
NSN 6150-01-509-9269