... electric valve opening and closing.Specification1,Operating valve ,380V 50Hz, three phase four wire system.2,Control power, BFA-1 1.1Kw ... 152+1mm×76+1mm7,Weight ,3KgInstallation and adjustment1,Under Choose drawing type specification will install fixed, on the back panel of ... the stop key, cut off the three-phase power supply, change any of the three-phase power supply two phase. 5,Press the off button ...