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 6220-01-487-3904
NSN 6320-00-270-8222
NSN 6650-01-632-3501
NSN 5960-01-045-8524
NSN 5855-01-485-3429
NSN 5960-01-319-6735
NSN 5998-01-514-7449
NSN 5915-00-513-9701
NSN 5895-01-485-0134
NSN 6645-01-207-9273
NSN 6135-00-927-5848
NSN 5999-00-217-9976