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 6240-01-448-4761
NSN 6685-01-358-4130
NSN 5998-01-335-1854
NSN 5930-00-181-3915
NSN 5985-01-477-0901
NSN 5945-00-404-0374
NSN 6240-01-513-6526
NSN 6105-00-167-7576
NSN 4140-00-633-7540
NSN 6220-01-484-7067
NSN 5990-01-476-0722
NSN 5935-01-591-0690