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 6135-01-014-9755
NSN 5915-01-501-7997
NSN 5925-01-221-6426
NSN 6220-00-872-1134
NSN 6220-01-653-7067
NSN 6685-01-634-0611
NSN 5950-00-840-9677
NSN 6110-00-943-5216
NSN 5950-00-050-9378
NSN 6145-00-570-0516
NSN 5990-01-442-3520
NSN 5855-01-657-7657