... low noise, no leakage,high performance CE,ISO90001. Hot water circulation pump with flange 1.Working conditions:Rated voltage of power supply ... single-phase AC.-Pressure of system ≤1.0MPa.-Pressure of water inlet ≥0.1Mpa.-Transmitted liquid should not include solid impurity ... villa of suburb, house, to match industrial equipment .to supply water in cycle for cool air-condition, boiler and solar energy ...