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 6240-01-069-7693
NSN 7035-01-497-0882
NSN 5915-01-049-3198
NSN 4140-01-471-7193
NSN 6610-00-917-1480
NSN 2925-01-180-2960
NSN 5935-01-012-5018
NSN 5999-00-920-2461
NSN 5990-01-231-1214
NSN 5910-01-275-8192
NSN 5999-00-308-5656
NSN 6150-00-127-5179