Hot Water Control Valve

Introduction To Hot Water Control Valve

In hot water supply systems, controlling outlet temperature is essential for safe and stable operation. A hot water control valve mixes hot and cold water to maintain the outlet temperature at a preset level. Its precise mixing mechanism helps reduce scalding risk and protect downstream fixtures and equipment.

These valves are commonly installed in domestic water branches, sanitary areas, commercial kitchens, and heating systems. A standout feature is their rapid response to supply temperature shifts, which sustains a stable outlet temperature even as pressure and flow fluctuate, supporting reliable long-term system performance.

Hot water control valves from Watts adhere to strict engineering standards with a focus on durability and accurate temperature control. Compared with many products on the market, Watts valves offer clear specifications, a broad range of applications, and stable thermal performance, making them suitable for residential, commercial, and infrastructure projects.

Operating Principle Of Hot Water Control Valves

To maintain a stable outlet temperature, a hot water control valve operates through a mechanical mixing principle. This allows the valve to keep delivering water at the preset temperature even when supply conditions change, supporting safe and consistent system performance.

Inside the valve are a thermostatic sensing element and a flow regulating assembly. When outlet temperature rises above or falls below the setpoint, the internal mechanism automatically adjusts the ratio of hot and cold water passing through the valve. This continuous adjustment quickly restores the outlet temperature to the desired level.

Hot water control valves from Watts are engineered for fast response and high accuracy. After installation, proper commissioning based on actual system conditions helps ensure optimal performance. With a stable operating principle, Watts valves provide reliable long-term safety for hot water systems.

Watts Hot Water Control Valve Product Line

To meet different operating conditions and varying hot water source temperatures, Watts offers multiple hot water control valve series with specific configurations and application ranges. Each series is engineered for particular technical requirements, helping engineers and contractors select the most suitable solution for hot water supply systems.

Series TVA

The TVA is a standard tempering valve from Watts, designed for hot water supply systems that require stable outlet temperature control. The valve operates through precise mixing of hot and cold water, helping reduce the risk of exposure to excessively hot water at points of use. Compared with many conventional mixing valves, the TVA stands out for flexible installation, high safety performance, and a corrosion-resistant body suitable for long-term operation in potable water systems.

Below are the key technical specifications and features of the TVA series:

• Valve size: DN15 – DN20
• Body material: DR brass 
• Working pressure: Suitable for mains water pressure
• Hot water supply temperature: 65°C – 99°C
• Safety feature: Failsafe shutdown in the event of failure of hot and cold supplies
• Certification: WaterMark 

Series TVAS

The TVAS series is a solar tempering valve from Watts, developed for hot water systems with high source temperatures, especially solar water heating applications. The valve mixes hot and cold water to maintain a stable outlet temperature, helping reduce the risk of exposure to excessively hot water at points of use. Compared with standard tempering valves, the TVAS stands out for its ability to operate with higher hot water inlet temperatures, making it well-suited for solar and other high-temperature hot water systems.

Below are the key technical specifications of the TVAS series:

• Valve size: DN15 – DN20
• Body material: DR brass 
• Working pressure: Suitable for mains water pressure
• Hot water supply temperature: 65°C – 110°C
• Safety feature: Failsafe shutdown in the event of failure of hot and cold supplies
• Certification: WaterMark

Watts Hot Water Control Valves – Exclusively Distributed by Toan Cau

In Vietnam, Watts hot water control valves are exclusively distributed by Toan Cau Building Materials Co., Ltd. Official distribution ensures clear product origin, genuine quality, and technical specifications that fully comply with manufacturer standards and project requirements.

Beyond hot water control valves, Toan Cau stocks the complete Watts lineup: pressure reducing valves, automatic control valves, check valves, balancing valves, safety valves, and specialized flow control solutions. This broad portfolio allows engineers and contractors to select coordinated equipment for the same system, making design and operation more efficient.

With many years of experience in technical equipment distribution, Toan Cau provides consultation based on actual operating conditions to help achieve long-term efficiency and safety. For technical support or a quotation, call hotline 0911 771 551.