Brand new throttle control Valve. This is commonly known as a "Bullwhip" and is produced by Conrader Valves and is made in the U.S.A. This valve controls the engine throttle speed on gas powered air compressors when used in conjunction with a pilot / unloader valve. This valve is designed to control Subaru brand small engines 9HP or smaller used on portable compressors. This is mounted next to the throttle control on the engine and a air line is used from the pilot valve to control the engine speed using this valve.