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 5895-00-490-1550
NSN 5855-01-352-7033
NSN 5835-01-018-6294
NSN 6150-01-512-1638
NSN 6240-01-399-2493
NSN 5920-00-868-2460
NSN 5950-01-311-9946
NSN 5990-01-481-3080
NSN 5910-01-506-7209
NSN 5855-00-466-2309
NSN 5998-00-994-0968
NSN 6130-01-625-2241