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 5965-01-561-2077
NSN 5965-01-399-8454
NSN 6650-00-403-5251
NSN 6145-00-865-9434
NSN 6135-01-167-7604
NSN 6645-01-445-2841
NSN 6135-01-313-1948
NSN 6685-01-579-4156
NSN 5925-00-379-0920
NSN 5905-01-157-7798
NSN 5930-01-507-7954
NSN 5915-00-612-3377