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 6150-01-453-0036
NSN 6320-01-311-3286
NSN 6135-01-544-8463
NSN 5996-00-009-2478
NSN 5999-01-524-7755
NSN 6220-00-939-8609
NSN 5965-01-010-1258
NSN 5920-01-297-3133
NSN 5975-01-423-8507
NSN 5910-00-859-8320
NSN 6145-01-172-2968
NSN 5855-01-051-1155