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 7035-01-135-7783
NSN 6130-01-049-9576
NSN 5990-01-272-4091
NSN 5905-01-261-3585
NSN 6150-01-657-5272
NSN 6320-01-006-6138
NSN 5915-01-511-1024
NSN 6110-01-296-0000
NSN 5935-01-299-4515
NSN 6320-00-149-7570
NSN 6610-01-512-8154
NSN 6645-00-998-7820