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 5965-01-641-6979
NSN 5920-01-203-6952
NSN 5998-01-197-1662
NSN 6240-00-689-8504
NSN 6110-00-137-9544
NSN 6685-01-388-5718
NSN 6135-01-142-2417
NSN 4140-01-074-2588
NSN 7035-00-981-7216
NSN 5910-01-218-3667
NSN 5895-01-122-8287
NSN 5996-01-356-1650