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 6650-01-341-9838
NSN 6150-00-595-6931
NSN 5930-01-010-1156
NSN 5999-01-160-7465
NSN 6685-01-442-7901
NSN 6145-00-010-5135
NSN 6135-00-128-1633
NSN 5855-00-560-0110
NSN 7035-01-406-5232
NSN 6610-01-448-2590
NSN 5975-01-487-5502
NSN 5990-01-195-3077