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 5998-01-044-3384
NSN 5895-01-428-2518
NSN 7035-00-300-3208
NSN 5998-01-498-8989
NSN 5990-00-223-5938
NSN 6610-01-052-0803
NSN 5930-01-242-2545
NSN 6645-01-093-5015
NSN 6645-01-154-2228
NSN 6620-01-535-0070
NSN 5910-01-332-2857
NSN 5855-01-537-0499