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 6645-01-487-8227
NSN 5920-00-220-3548
NSN 5999-01-629-0165
NSN 6620-00-833-6786
NSN 6220-01-278-1341
NSN 5998-01-607-6721
NSN 4140-00-983-8048
NSN 5975-00-763-5437
NSN 4140-00-850-8133
NSN 4140-01-399-0330
NSN 6685-00-684-7667
NSN 5855-00-918-1622