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 6620-01-550-2805
NSN 6645-01-264-4093
NSN 6220-01-310-8741
NSN 5915-01-290-4107
NSN 5905-00-624-7453
NSN 5960-00-248-3094
NSN 6645-01-231-9891
NSN 7035-01-328-7448
NSN 6610-01-196-6388
NSN 6130-00-587-7062
NSN 5950-00-146-4949
NSN 6135-01-467-5100