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 6135-01-633-8502
NSN 5920-00-465-0594
NSN 6620-01-206-5748
NSN 5965-01-145-3732
NSN 5996-00-311-9302
NSN 6650-01-044-7746
NSN 6240-01-064-9727
NSN 5990-01-576-4383
NSN 5920-01-475-1251
NSN 6110-00-247-0211
NSN 4140-01-201-0534
NSN 6220-00-111-3188