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 6150-01-373-3608
NSN 5895-01-224-7913
NSN 2925-01-532-0781
NSN 5999-00-419-2914
NSN 5975-00-789-6209
NSN 5835-01-390-4667
NSN 5950-00-789-1971
NSN 6320-01-177-3192
NSN 6220-01-174-2035
NSN 7035-01-435-4009
NSN 5990-00-518-0684
NSN 5855-00-821-7512