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 5930-01-154-3828
NSN 5855-01-013-6864
NSN 6620-01-069-0912
NSN 2925-00-233-5644
NSN 6135-00-016-0071
NSN 6645-01-387-7209
NSN 5835-01-641-0073
NSN 6685-01-502-6422
NSN 5895-01-582-6906
NSN 6110-00-009-5414
NSN 5895-01-383-0240
NSN 5905-01-600-0939