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 5915-00-597-0038
NSN 5935-00-411-1305
NSN 5985-01-016-6111
NSN 5920-00-515-3617
NSN 6650-01-534-5787
NSN 6110-00-148-0910
NSN 5999-01-273-7322
NSN 6240-01-093-0837
NSN 5965-01-045-0247
NSN 5975-01-379-6178
NSN 5965-01-461-2850
NSN 6610-01-534-8433