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 6645-01-027-7042
NSN 6620-01-391-7331
NSN 6145-01-415-1263
NSN 5910-00-528-4311
NSN 5895-00-553-8345
NSN 5935-01-124-4634
NSN 6150-01-142-2079
NSN 5925-01-432-1698
NSN 5835-00-092-1136
NSN 6685-01-401-5360
NSN 6685-01-634-0611
NSN 5930-01-431-3730