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 6145-01-190-6491
NSN 6220-01-273-3896
NSN 6240-00-583-9863
NSN 5855-01-213-3267
NSN 5855-01-535-2266
NSN 5998-00-541-2529
NSN 6110-01-616-4509
NSN 6135-00-998-5884
NSN 5985-00-830-6252
NSN 5920-01-040-7718
NSN 5998-01-449-0962
NSN 6130-01-313-4798