This is a BRAND NEW OEM YORK/LUXAIRE/COLEMAN 2 Stage furnace Gas Valve. It's designed for HOT SURFACE IGNITION and it replaces all the old York part #s listed below. (Valve has an updated look from the old White Rodgers look but is the direct replacement!) The valve has an 1/2" inlet and a 1/2" outlet. The valve is currently set up for NAT gas.