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 6220-00-376-8103
NSN 7035-00-553-6951
NSN 6685-01-321-7931
NSN 6685-00-404-3715
NSN 5855-00-198-3197
NSN 6145-01-246-3988
NSN 5990-01-331-7071
NSN 6650-00-248-4895
NSN 5998-01-551-0813
NSN 6240-00-006-3725
NSN 5999-01-364-1237
NSN 2925-00-574-8796