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 5975-01-552-5221
NSN 5950-01-172-7548
NSN 5915-01-050-8214
NSN 6135-01-304-6423
NSN 4140-01-579-8352
NSN 5998-00-446-3595
NSN 5985-01-293-0178
NSN 5915-00-396-8087
NSN 6320-00-343-1798
NSN 6650-00-629-8027
NSN 6110-01-472-3546
NSN 6110-01-508-3779