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 2925-01-633-4048
NSN 5999-01-250-8928
NSN 6320-01-445-8192
NSN 6150-01-572-9607
NSN 6610-01-469-6012
NSN 5895-01-521-7569
NSN 6220-00-438-5049
NSN 6650-01-450-7930
NSN 5855-01-616-4391
NSN 5895-01-630-1612
NSN 6135-01-008-4595
NSN 5975-00-935-5946