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 6620-01-258-8980
NSN 6685-01-367-0767
NSN 5975-00-012-4376
NSN 5905-01-046-5290
NSN 6135-01-492-8934
NSN 5998-01-094-9642
NSN 6685-01-063-7425
NSN 5985-00-005-7177
NSN 7035-01-323-0164
NSN 5835-01-515-6537
NSN 5960-01-512-0233
NSN 5950-00-689-7743