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 5965-01-307-8301
NSN 6220-01-394-8468
NSN 4140-01-135-3740
NSN 6110-00-647-3932
NSN 5950-01-424-0257
NSN 5915-01-411-9954
NSN 5985-01-274-1042
NSN 6650-01-509-7235
NSN 6645-01-651-6119
NSN 5996-01-464-1209
NSN 5975-01-184-8405
NSN 5895-00-690-0090