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 5998-01-177-9957
NSN 6220-01-163-6380
NSN 5930-01-176-1600
NSN 6240-01-422-1356
NSN 2925-01-255-3534
NSN 6135-00-269-5843
NSN 5935-00-052-3690
NSN 5920-01-441-9363
NSN 5990-00-518-3195
NSN 5915-00-071-1819
NSN 5925-01-246-9620
NSN 5950-01-067-3014