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 5910-01-287-9780
NSN 5920-00-917-3539
NSN 6645-00-527-6531
NSN 5915-01-302-4884
NSN 5985-01-631-3956
NSN 6240-01-155-0875
NSN 6645-00-226-2270
NSN 5905-00-467-2742
NSN 6135-01-329-7994
NSN 5945-00-850-7330
NSN 5925-01-481-2099
NSN 6220-01-345-4865