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 6220-00-145-1423
NSN 5835-01-281-1655
NSN 5998-01-139-7382
NSN 5835-01-252-5879
NSN 2925-00-740-7029
NSN 7035-01-509-1959
NSN 5910-01-604-8079
NSN 4140-01-576-4014
NSN 5915-01-170-9994
NSN 6150-01-415-3573
NSN 5998-00-728-8636
NSN 6240-01-181-1187