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 5855-01-213-9076
NSN 5915-00-494-6067
NSN 6620-01-215-0470
NSN 6150-00-855-5264
NSN 5925-01-407-2549
NSN 5920-01-444-1700
NSN 6150-01-096-1725
NSN 5895-01-651-7701
NSN 5975-01-416-2835
NSN 6685-00-740-7256
NSN 6320-01-006-6138
NSN 4140-00-862-3862