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 6620-01-569-3313
NSN 6685-00-203-2389
NSN 6135-00-416-2898
NSN 6110-00-280-2753
NSN 5975-00-219-4321
NSN 4140-00-225-8586
NSN 5920-00-485-9170
NSN 6220-01-383-1759
NSN 6685-01-194-3931
NSN 5915-01-213-3247
NSN 5996-00-106-2241
NSN 5965-01-165-7496