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 5975-00-175-0586
NSN 5985-00-548-0167
NSN 6240-01-563-0096
NSN 5925-00-337-8138
NSN 5990-01-126-9279
NSN 5996-01-414-9827
NSN 6150-01-023-1516
NSN 6610-01-351-4607
NSN 6685-00-521-3284
NSN 6110-00-569-8930
NSN 5930-01-163-7282
NSN 6685-01-315-5752