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 2925-00-294-4140
NSN 5835-01-416-6455
NSN 5915-01-594-1512
NSN 6620-01-633-8443
NSN 5950-01-133-1693
NSN 6650-00-578-6543
NSN 5915-01-615-0826
NSN 5990-00-886-3685
NSN 6220-00-151-5008
NSN 5985-01-184-5625
NSN 5965-00-100-1291
NSN 5920-01-382-9379