DTM hot water circulation pump: 1.CE, ISO9001-2008, CQC, etc; 2.One Year warranty; ... large flow quantity, with certain ability of discharging dirty water and impurity. 2. They are single stage centrifugal ... suitable used on household, hospital, hotel, factory's water supplying, farm irrigation, etc. Technical date at 50 ... requirements.Sample Room:Factory View:Certificate: DTM hot water circulation pump