... Voltage:DC12V,24V.AC110V,220V sealing:viton KL0311 4 way electronic valvesMainly used in air compressor to control loading,off-loading ... ,2 working ports,one exhaust port). it is same with function of one 2/2 way (NC type) and one3/2 ... ,good sealing,easy fixing.Order Code:size: KL0311 4 way electronic valves for air compressor/DC12V,24V.AC110V,220V