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 5945-01-358-1921
NSN 5895-00-004-6436
NSN 5915-00-969-6382
NSN 4140-01-278-1527
NSN 6145-01-432-6745
NSN 5950-01-422-7475
NSN 5985-00-670-0176
NSN 5990-00-647-4008
NSN 5925-01-144-1231
NSN 2925-01-142-0981
NSN 5925-01-113-6827
NSN 6240-00-243-8336