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 5996-01-478-3511
NSN 6610-00-466-3104
NSN 6685-01-485-3110
NSN 6620-01-208-1092
NSN 6685-01-097-4048
NSN 5835-01-268-1924
NSN 6240-01-111-3394
NSN 5925-01-154-2468
NSN 6145-01-623-1337
NSN 5950-01-080-1611
NSN 5855-00-135-9064
NSN 5905-00-400-1127