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 6320-01-399-6177
NSN 6110-01-231-1047
NSN 6105-01-337-2624
NSN 5920-01-050-3341
NSN 6645-00-155-2398
NSN 5950-00-798-7803
NSN 5925-00-185-4020
NSN 5925-01-379-3963
NSN 6620-01-561-5310
NSN 5996-01-442-8751
NSN 5835-01-040-1960
NSN 5920-01-323-6369