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 5835-01-399-5820
NSN 5975-01-399-4129
NSN 6150-00-583-9878
NSN 5999-00-501-3788
NSN 6685-00-868-7415
NSN 6240-01-089-6149
NSN 6645-01-021-5727
NSN 6320-00-405-2348
NSN 5895-01-553-8730
NSN 2925-00-679-8131
NSN 5975-01-392-0436
NSN 5965-01-433-1974