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 5960-01-411-1825
NSN 6645-01-210-2223
NSN 6105-01-206-6434
NSN 6110-01-392-0498
NSN 6320-00-394-8458
NSN 6105-01-472-9666
NSN 5915-01-264-2877
NSN 5915-01-322-6245
NSN 6610-00-647-3830
NSN 6685-01-173-1506
NSN 6610-01-284-0009
NSN 6610-00-887-2118