16bar Auto Timer Drainer Valve Port size G1/4",G3/8",G1/2" For Air Compressor System OPT Series Electrical timer auto drainer working pressure 16bar,40bar,80bar with Timer and drainer valve,strainer filter Quick Detail: * OPT Series electrical timer auto drainer * OPT-A with valve,strainer filter ball valve separted * OPT-B with valve,strainer filter ball valve intergrated * With timer for timming control * rainer solenoid valve two poistion two direct acting * Max.working