Pressure independent control for towel rails

RT40

Tried. Tested. Trusted.

The RT40 is a pressure independent return temperature limiting valve (PI-RTLV) for towel rails which controls the flow to maintain consistently warm and efficient heating.

Why choose the RT40

Key features and benefits

Differential Pressure

The built-in differential pressure controller maintains stable flow, helping contractors get systems set up quickly and confidently.

Return Temperature Limiting

A return temperature limiting sensor automatically closes the valve to maintain the return temperature at the target setpoint.

Ease of Use

Simple presetting on a 1-7 scale gives reliable control of heat delivered to individual towel rails, cutting cost, commissioning time and energy​.

Integrated control, measurable savings

Towel rails warm towels, not rooms. Without controlled flow, they can drive up return temperatures and reduce network efficiency. The RT40 controls flow based on return water temperature, helping maintain the target return temperature automatically.

The importance of balanced systems

With optimal temperature control and automatic hydronic balancing, the RT40 PI-RTLV stabilises heat 24 hours a day, 365 days a year.

Towel Rail Valve Body Design

RT40

RT40

RT40 PI-TRV Configurator

Find the right RT40 TRV set for your building quickly and easily with our step-by-step configurator tool.

A partner through the full project lifecycle

For help with selections and project specific settings, our team is always on hand with practical and technical support.

Smarter flow with lower energy use

Pressure independent and pre-settable, it is recommended as best practice for towel rails in CP1 (2020).

Information about our product

Frequently asked questions

What is the RT40 pressure independent return temperature limiting valve (PI-RTLV) and how does it work?+

The RT40 is a pressure independent return temperature limiting valve designed specifically for towel rails. It regulates the flow of water to maintain a consistent and efficient heating temperature. The built-in differential pressure controller ensures stable flow by automatically balancing the system, while the return temperature limiting sensor closes the valve when the target return temperature is reached, optimising energy use and system efficiency.

How does the RT40 contribute to energy savings in heating systems?+

The RT40 enhances energy efficiency by controlling the flow based on the return water temperature, preventing excessive heat from being delivered to towel rails. This automatic regulation helps maintain the desired return temperature, reducing unnecessary energy consumption and costs associated with heating systems that are not properly balanced.

What are the advantages of using the RT40 for towel rails in heating applications?+

The RT40 offers several advantages, including ease of use with a simple 1-7 preset scale for reliable heat control, automatic hydronic balancing, and a flow limiter that ensures the maximum flow does not exceed design specifications. Additionally, it stabilises heat delivery 24/7, ensuring that towel rails warm towels effectively without heating the entire room, enhancing comfort and efficiency.

How can I find the right RT40 TRV set for my building?+

You can quickly find the appropriate RT40 TRV set by using the RT40 PI-TRV Configurator, which provides a step-by-step tool to guide you through the selection process based on your building's specific requirements. For further assistance, SAV also offers practical and technical support throughout your project lifecycle.

What support does SAV provide for projects involving the RT40 valve?+

SAV is committed to supporting customers throughout the full project lifecycle. Our team is available to provide practical and technical assistance, offering advice on selections and project-specific settings. This ensures that you receive tailored solutions that meet the unique demands of your heating system.

Heat and Power documents

Relevant links and downloads

Datasheets

Access product datasheets with key technical information, performance data and requirements for our Heat and Power solutions.

Specifications

Browse detailed product specifications to support system design, project planning and technical compliance across a range of applications.

Design Guides

Explore practical design guidance, best practices and expert advice to deliver efficient and effective Heat and Power systems.

Technical Guides

In-depth technical resources covering commissioning, operation and maintenance to support every stage of your project.

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