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 6620-00-221-6639
NSN 5985-01-366-0525
NSN 5920-00-832-0320
NSN 6145-01-341-7568
NSN 6620-00-022-8056
NSN 6685-01-103-3143
NSN 5975-01-524-0033
NSN 5999-00-506-2317
NSN 5895-00-901-5769
NSN 5975-00-153-0050
NSN 5835-01-297-1909
NSN 5855-01-542-9059