... s power. b) Automatic circulating pump with control marked with Manual,Automatic,Stop. c) This electric product is airproof,all the ... are in water when working,the shaft material isceramic,automatic water circulating,non-overloading motor,no external overload control required. ... ,pipe connection:G1.5"-1" 2 port to port length:180mm 3 Max operating pressure:1 bar 4 Pressure stage,pipe connection ...