Pt40 Pressure Independent Thermostatic Radiator
Valve (PI-TRV)

Creating free energy

Maintaining a low return temperature at all loads minimises energy waste, which results in a cost effective heat delivery. To achieve this requires pressure independent flow control that dynamically balances the heating system.

Originally designed for the retro-fit market to reduce the operating costs of unbalanced buildings. The Pt40 (PI-TRV) balances the heating system 24 hours a day, 365 days a year.

Pt40 PI-TRV Selector

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Pt40 PI-TRV's documents

Please find relevant links for further reading below, or visit our downloads page.

The Pt40 provides a simple solution to efficient heating. Optimal temperature control and automatic hydronic balancing.



Minimise waste, maximise efficiency

From reducing energy waste, improving the efficiency of the heat plant, lowering heating bills and reducing set-up & commissioning time, the Pt40 offers 12-15% energy saving compared with traditional TRVs.

Best practice

Pressure independent

Pressure fluctuations due to varying load conditions require a constant automatic balancing to maintain a comfortable and efficient heating system.


No more no less

With a simple setting scale (1-7), the Pt40 can permanently and relia­bly control the heat delivered to individual rooms.


Fastest reaction time

The RA2000 gas sensor is the fastest reacting TRV available. This results in additional energy savings of 5-8% when compared with liquid-filled thermostatic sensor heads.

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