Pressure independent control for radiators

PT40

Tried. Tested. Trusted.

The PT40 pressure independent thermostatic radiator valve combines a differential pressure controller and flow limiter in one valve, automatically balancing each radiator and maintaining consistent comfort.

Why choose the PT40

Key features and benefits

Dynamic Balancing

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

Accurate Flow Control

A flow limiter caps flow at the peak design rate to ensure the design return temperature is never exceeded.

Ease of Use

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

Integrated control, measurable savings

Featuring the world's fastest reacting gas-filled sensor, Danfoss Aero® thermostats improve temperature control and reduces energy bills by 2%.

Combining control, balance and efficiency

As radiators modulate, the pressure in the system fluctuates. Unlike traditional TRVs the PT40 has a differential pressure controller in its valve body. The flow therefore remains stable, reducing return temperature and cutting energy use by 10-12%.

Radiator Valve Body Design

PT40

PT40

PT40 PI-TRV Configurator

Find the right PT40 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.

Information about our product

Frequently asked questions

What is the main advantage of using the PT40 pressure independent thermostatic radiator valve?+

The primary advantage of the PT40 valve is its ability to maintain dynamic balancing and accurate flow control. The built-in differential pressure controller ensures stable flow throughout the heating system, resulting in consistent room temperatures and improved energy efficiency by reducing unnecessary energy consumption.

How does the PT40 valve improve energy efficiency in heating systems?+

The PT40 valve improves energy efficiency by automatically balancing the system and limiting the maximum flow through radiators. This prevents the return temperature from exceeding the designed limits, which can cut energy use by 10-12%. Additionally, the integrated Danfoss Aero® thermostat reacts quickly to temperature changes, further enhancing energy savings by approximately 2%.

How easy is it to use the PT40 valve for individual radiators?+

Setting up the PT40 valve is straightforward, thanks to its simple 1-7 presetting scale. This allows users to reliably control the heat delivered to individual radiators. The thermostatic sensor automatically adjusts the flow to maintain the desired temperature, significantly reducing commissioning time and associated costs.

Can the PT40 valve be used in a variety of heating applications?+

Yes, the PT40 valve is versatile and can be utilised in various heating applications, including residential and commercial settings. Its ability to balance and control flow makes it suitable for both single radiator installations and larger systems, ensuring optimal performance across different environments.

What support does SAV offer for selecting the right PT40 TRV for a project?+

SAV provides comprehensive support through its PT40 PI-TRV configurator, which guides users in selecting the appropriate valve set for their specific building requirements. Additionally, our team is available for practical and technical assistance throughout the project lifecycle, ensuring customers receive expert advice tailored to their needs.

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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