GS series adjustable speed circulation pumps adopt shielded motor and wet rotor technology, with low noise and no leakage. The product is composed of a ceramic shaft, ceramic bearing, stainless steel shield sleeve, high-temperature resistant plastic impeller, high-temperature resistant sealing gasket, stainless steel rotor sleeve, and other parts. The flow range of the product series is 0-9.6m³/ h, the head range is 0-15m, and the input power is 0-270w. It is used in the hot and cold water circulation system.