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 5950-01-476-0939
NSN 5950-01-610-8778
NSN 6645-01-406-6077
NSN 6685-01-623-6338
NSN 5855-00-198-3197
NSN 6145-01-384-0908
NSN 6150-01-561-2265
NSN 6650-01-323-0012
NSN 6105-00-890-4982
NSN 5895-01-503-5559
NSN 5950-01-413-7899
NSN 6150-01-519-9309