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 5920-00-336-2475
NSN 2925-01-459-8093
NSN 6610-01-179-4922
NSN 6105-00-938-6032
NSN 6220-00-475-0217
NSN 5975-01-634-0678
NSN 6150-00-497-8653
NSN 5910-00-155-4763
NSN 6150-01-594-9216
NSN 6320-01-426-8947
NSN 5925-01-478-7743
NSN 6145-01-142-5732