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 6240-01-571-7706
NSN 6150-00-221-6684
NSN 6685-00-485-5781
NSN 6110-01-390-0537
NSN 5960-01-229-6324
NSN 6220-01-367-1877
NSN 5935-01-221-0807
NSN 5965-01-391-1703
NSN 5945-01-372-5576
NSN 5975-00-327-8586
NSN 5935-01-367-1958
NSN 5975-01-446-5794