Technical Data
Introduction to Electric Two-way Valves
Electric Two-way Valves feature two ports (inlet and outlet), enabling flow to open or close based on signals from a central control system. By integrating a mechanical valve body with an electric actuator, they provide stable flow control, reduce pressure fluctuations, and improve system efficiency. In HVAC and hot water systems, they regulate temperature and flow at each branch, optimizing energy use and control accuracy.
Compared to conventional control valves, Electric Two-way Valves respond directly to electrical signals, allowing seamless integration with BMS and automation systems. Their compact design with fewer connections simplifies installation and reduces pressure loss, making them suitable for commercial buildings, factories, and technical systems requiring continuous control.
For Watts, Electric Two-way Valves are engineered for high control accuracy, durable materials, and compatibility with various actuators. They ensure tight sealing, long-term stability, and adaptability across different operating conditions, offering a clear advantage within the segment.

Watts Electric Two-way Valve Product Line
After understanding the operating principle, identifying each specific valve series will help in selecting the most suitable solution for different systems. Watts offers a wide range of Electric Two-way Valve series with varying structures, materials, and application scopes, meeting diverse requirements in terms of flow rate, pressure, and operating conditions.
Series W-912-16P
The W-912-16P is a modulating electric two-way valve developed by Watts for HVAC systems, hot and chilled water circuits, boilers, and heat exchangers. It features an equal percentage control characteristic, enabling precise flow regulation even at low load conditions. The valve body, trim, and stem are made of stainless steel, ensuring stable performance during continuous operation and meeting technical requirements in building automation systems.
Below are the key technical specifications of the W-912-16P series:
- Valve size: DN15 – DN80
- Body material: Stainless steel
- Nominal pressure: PN16
- Temperature range:
- Water: -25°C to 150°C
- Steam: 2°C to 180°C
- Connection standards: ISO 7/1, GB/T 7306.1
- Connection type: Threaded
- Working medium: Water, Ethylene Glycol, Propylene Glycol, Steam

Series W-942-16/25Q
The W-942-16/25Q series is a flow control electric two-way valve designed for HVAC systems, boilers, heat exchangers, and steam systems with large flow capacity. The valve features an equal percentage control characteristic, allowing stable and proportional flow variation in response to control signals. A V-shaped sealing ring combined with a self-compensating wear mechanism enhances wear resistance and extends service life during continuous operation. With sizes up to DN500, this series is well-suited for medium to large-scale systems.
Below are the key technical specifications of the W-942-16/25Q series:
- Valve size: DN15 – DN500
- Body material: Ductile iron
- Nominal pressure: PN16 / PN25 (water valve)
- Temperature range: -20°C to 82°C
- Connection standard: ISO 7005
- Connection type: Flanged
- Working media: Water, Ethylene Glycol, Propylene Glycol, Steam

Toan Cau – Exclusive Distributor of Electric Two-way Valves in Vietnam
In Vietnam, Toan Cau serves as the exclusive distributor of Electric Two-way Valves from Watts Water Technologies. All products are supplied with full CO/CQ documentation, clear technical specifications, and are fully matched with actuators according to the manufacturer’s standards. This ensures confidence for consultants, contractors, and investors when selecting flow control solutions for HVAC, heating, and building systems.

In addition to Electric Two-way Valves, Toan Cau also provides a full range of Watts valves, including safety valves, globe valves, check valves, balancing valves, fittings, and strainers, covering complete flow control requirements within a single system. With strong market credibility and hands-on project experience, Toan Cau delivers reliable technical support and solution consulting. For detailed consultation and official quotations, please contact Hotline: 0911 771 551.
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