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 6135-01-503-1688
NSN 5930-01-132-4476
NSN 6130-01-634-0603
NSN 6685-01-216-0948
NSN 5835-01-281-9662
NSN 6105-00-497-2873
NSN 5925-01-005-4983
NSN 5925-00-170-4090
NSN 5945-01-071-3172
NSN 5965-01-398-7109
NSN 5925-01-634-0664
NSN 6130-00-541-8468