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 5999-01-399-8726
NSN 5998-01-049-0359
NSN 5915-01-386-4402
NSN 6145-01-231-0331
NSN 6320-01-470-6826
NSN 5950-01-303-6078
NSN 2925-01-243-7736
NSN 7035-01-552-4746
NSN 5915-00-550-7073
NSN 5910-01-576-8402
NSN 5855-00-491-7079
NSN 5910-01-403-2812