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 5950-01-149-1417
NSN 6685-00-155-4301
NSN 5920-00-100-2582
NSN 5950-01-500-2223
NSN 6320-01-089-9086
NSN 2925-01-187-0423
NSN 2925-01-320-6512
NSN 5925-01-101-9480
NSN 5945-00-866-8592
NSN 5920-00-621-6601
NSN 5935-00-683-7894
NSN 5975-01-239-6488