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 6645-00-531-4820
NSN 5935-00-115-6015
NSN 5975-01-455-0709
NSN 5920-00-365-3184
NSN 7035-01-506-8018
NSN 2925-00-190-5561
NSN 5990-00-870-8310
NSN 5925-00-405-9343
NSN 5996-01-215-0944
NSN 6220-00-103-3419
NSN 5915-01-255-8902
NSN 6645-01-067-4393