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 6150-01-157-2931
NSN 5965-01-321-9598
NSN 5925-01-198-9910
NSN 5915-01-424-8648
NSN 5950-01-605-3104
NSN 6320-01-371-3047
NSN 5905-01-247-9359
NSN 5915-01-340-5953
NSN 6685-01-016-1481
NSN 5930-01-634-0659
NSN 5905-01-532-2741
NSN 6135-01-577-5532