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 5920-01-115-7902
NSN 5930-01-115-9489
NSN 6220-00-222-7426
NSN 5996-01-648-0405
NSN 6105-00-268-2878
NSN 6105-01-463-9928
NSN 5930-00-456-0889
NSN 5998-01-514-7345
NSN 5985-01-272-9745
NSN 6220-00-960-0778
NSN 6240-01-442-7746
NSN 6150-00-205-2490