Sanhua 3-Way Electric Coolant Valve

The Sanhua 3-Way Electric Coolant Valve (Model ECV-398) is a highly advanced, electronic diverter valve utilized in modern automotive and electric vehicle (EV) thermal management systems. Engineered by Sanhua Automotive (a leading global OEM supplier recognized by its "Three-Flower" logo), this lightweight, high-performance valve precisely controls the flow and distribution of water-glycol coolant between multiple heating and cooling circuits.

Key Specifications:

• Category: Automotive Parts & Accessories / Engine Cooling & Climate Control / Electric Coolant Valves

• Product Type: 3-Way Electric Coolant Valve (ECV)

• Manufacturer: Sanhua Automotive

• Model / Part Number: ECV-398

• Operating Voltage: 12V DC (9V to 16V operating range)

• Fluid Medium: Standard Water-Glycol coolant mixture

• Electrical Connection: Multi-pin weatherproof connector (Power, Ground, and Signal)

• Housing Material: High-temperature, glass-fiber reinforced polymer

• Control Method: LIN Bus / PWM communication

Key Features:

• Precision Multi-Circuit Routing – Seamlessly switches, mixes, or diverts coolant flow between three distinct ports, essential for balancing temperatures across different vehicle systems.

• Integrated Smart Actuator – Features a built-in brushless motor and internal control board. It receives direct commands from the vehicle's ECU to achieve exact rotary positioning while providing diagnostic feedback.

• High Efficiency & Low Pressure Drop – The internal ball/rotary valve design ensures minimal flow restriction when fully open, reducing the workload on the vehicle's electric water pumps.

• Lightweight & Leak-Proof – Constructed from heavily reinforced composite plastics to save weight, featuring quick-connect hose fittings (shipped with protective yellow dust caps) for fast, secure installation.

• Extreme Durability – Fully sealed against moisture and dust, designed to survive heavy vibrations and temperature swings from -40°C to +120°C in the engine bay.

Ideal For:

• Electric Vehicle (EV) battery pack heating and cooling loops

• EV inverter and power electronics thermal management

• Hybrid vehicle auxiliary cabin heating and engine bypass circuits

• Custom EV conversions requiring complex liquid cooling management

• Direct OEM replacement for compatible factory thermal management manifolds