HT-G3 Series Three electric central air-conditioning fan coil control valves used in cold / hot water off. Forging brass body, stainless steel base, aluminum shell, a fully enclosed one-way hysteresis synchronous motor, stainless steel, spring return, low power consumption and low noise. Split electric valve actuators and valve with snap-fits, does not require any tools can be simple and quick removal and installation is easy to use