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 5990-00-444-0612
NSN 6135-01-655-1759
NSN 5910-00-942-6629
NSN 4140-01-422-7447
NSN 7035-00-679-9027
NSN 5950-00-745-7588
NSN 6130-01-273-4904
NSN 5920-01-068-3135
NSN 6150-01-408-3160
NSN 4140-01-352-2924
NSN 5965-01-555-8775
NSN 5950-00-941-9297