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 5915-00-364-7791
NSN 5960-00-289-6591
NSN 2925-00-440-1855
NSN 5895-01-176-5428
NSN 4140-01-525-5979
NSN 6150-00-727-2860
NSN 5985-00-079-0598
NSN 5925-01-186-7117
NSN 6620-00-343-5602
NSN 5945-00-922-0031
NSN 5915-00-187-2053
NSN 5925-01-230-9655