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 5990-01-411-5930
NSN 5905-00-925-8081
NSN 6320-01-352-8084
NSN 5925-01-310-8456
NSN 5925-00-360-3984
NSN 5925-01-562-7337
NSN 6145-00-936-0083
NSN 6130-00-829-9782
NSN 6145-01-139-1477
NSN 5960-00-811-0842
NSN 6150-00-115-4455
NSN 4140-01-184-7417