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 5915-01-025-5119
NSN 5975-00-862-4506
NSN 5930-01-501-5611
NSN 6685-01-431-5785
NSN 5950-00-232-4915
NSN 5950-01-308-3488
NSN 5905-01-131-7541
NSN 5950-01-137-2777
NSN 6620-00-527-6523
NSN 6620-00-186-8220
NSN 5855-01-487-5048
NSN 6620-01-646-2751