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 5910-00-140-1910
NSN 5925-00-270-5924
NSN 6610-01-550-2368
NSN 6150-01-523-9317
NSN 5999-01-049-5261
NSN 6130-01-394-7130
NSN 5996-01-227-2555
NSN 5855-00-079-2370
NSN 6685-00-758-5868
NSN 5920-00-270-5179
NSN 2925-01-106-3552
NSN 6685-01-415-5936