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 6650-00-614-1711
NSN 6320-01-089-9086
NSN 6685-01-165-0576
NSN 5905-01-512-5909
NSN 5930-00-615-5335
NSN 5925-01-629-9266
NSN 6135-00-080-9176
NSN 5945-01-062-6242
NSN 6320-01-484-7734
NSN 6220-00-999-8401
NSN 4140-01-324-6331
NSN 6150-01-616-5813