... ,220V sealing:viton KL0311 4 way electronic valvesMainly used in air compressor to control loading,off-loading,pressurizing,decompression,inlet,exhaust automatically ... is with simpleconstruction,small size,good sealing,easy fixing.Order Code:size: KL0311 4 way electronic valves for air compressor/DC12V,24V.AC110V ...