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 5915-00-066-0371
NSN 5990-01-586-8202
NSN 7035-01-518-7625
NSN 5950-00-768-5218
NSN 5855-00-256-5562
NSN 5905-01-583-9624
NSN 4140-01-226-0637
NSN 5945-00-257-0578
NSN 5930-00-164-0730
NSN 5975-00-013-9291
NSN 6145-01-514-0593
NSN 5996-00-913-2633