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 5996-01-633-7979
NSN 6135-01-502-5787
NSN 6220-01-262-0140
NSN 5960-01-367-6153
NSN 5950-00-006-4685
NSN 6105-01-017-2748
NSN 6650-01-389-5862
NSN 6685-00-009-9363
NSN 6145-00-787-7313
NSN 7035-00-616-4410
NSN 5905-00-909-5330
NSN 5920-00-711-0767