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Household Cold and Hot Warm Heat Water Circulation Pump for Heating. Dual Voltage Support: Customizable voltage options including 220V/50Hz, 220V/60Hz, and 127V/60Hz. Durable Construction: Features cast iron body with ceramic shaft and bearing for long-lasting performance. Thermal Protection: Motor includes copper winding with built-in thermal protection for safety. OEM Branding Available: Custom brand names can be applied for orders totaling 1000 pieces or more. Versatile Applications: Ideal for residential heating, industrial cooling, solar systems, and boiler circulation. Efficient Operation: Flow switch integration ensures automatic start/stop when taps are used.