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 2925-01-038-5770
NSN 5905-01-462-5965
NSN 6685-00-878-0417
NSN 6610-00-081-2365
NSN 5945-00-363-9481
NSN 5975-00-875-0935
NSN 6610-01-469-6235
NSN 5998-00-087-4776
NSN 6645-00-752-2939
NSN 6685-00-235-4594
NSN 6620-01-544-8735
NSN 6145-01-055-8851