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 2925-01-150-7160
NSN 5895-00-769-9665
NSN 5935-01-169-4627
NSN 4140-00-150-1195
NSN 6320-01-123-6814
NSN 6135-00-221-4720
NSN 6110-01-142-2550
NSN 5945-01-327-2697
NSN 5990-00-946-5650
NSN 5998-01-272-4218
NSN 6110-01-433-7884
NSN 6610-01-443-0264