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 6645-00-508-5723
NSN 6145-00-321-3318
NSN 5999-00-163-1886
NSN 6685-01-634-0611
NSN 5990-01-284-3187
NSN 5990-01-584-8363
NSN 6620-00-676-2621
NSN 5930-01-088-6170
NSN 5915-01-237-3491
NSN 6135-01-462-0731
NSN 5910-00-319-2719
NSN 5998-01-415-2895