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 5935-01-060-0079
NSN 5965-01-342-2865
NSN 5930-01-566-6999
NSN 5985-00-042-3697
NSN 6685-01-462-1770
NSN 6150-00-740-0813
NSN 5965-01-390-9249
NSN 5965-00-900-8102
NSN 6645-01-400-2119
NSN 5996-00-546-9486
NSN 5895-00-291-4873
NSN 6220-01-573-7639