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 4140-01-056-6730
NSN 6110-00-456-2058
NSN 2925-01-567-8027
NSN 6135-00-686-4777
NSN 5960-01-215-0992
NSN 6240-00-246-7242
NSN 5975-00-918-1631
NSN 6145-00-141-8095
NSN 5990-01-105-5336
NSN 5855-01-594-7809
NSN 5920-01-456-9537
NSN 6650-00-490-2637