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 6620-00-752-8777
NSN 5910-01-321-7170
NSN 5985-01-658-8376
NSN 2925-01-098-9549
NSN 5935-00-597-5055
NSN 5985-00-833-7115
NSN 5950-01-463-3810
NSN 5996-01-271-8806
NSN 5855-01-333-9606
NSN 5910-00-766-3221
NSN 6610-01-320-6628
NSN 6685-01-487-3799