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RA Tech launches new product after HVR Awards win

After pioneering dry-trap tundish technology to safely and compliantly route relief valve discharge to drain, RA Tech launched the next generation of the hotun family, hotun detect in the early part of this year.

hotun detect is described as the world's first in tundish, water detection, temperature sensing, audible and visual alarm system to automatically let home owners know if any relief valve water has passed from the system through the tundish indicating that there is something wrong with their boiler or unvented water heater.

Much like its tundish forebearer, the new hotun detect is set to bring big changes to the heating industry. The new offering combines both design and technical know-how to evolve dry-trap tundishes from a passive alert to a proactive warning device for boilers and unvented cylinders, to the benefit of end users and installers alike.

hotun detect was nominated as finalists in two categories and has won the HVR Awards 2020 Ancillary Product of the Year.

The judges noted that “hotun detect is innovative and at the set price point is accessible to all, a simple idea that will alert homeowners to an issue that may have gone unnoticed until it caused significant damage and with its diagnostic function, technicians can triage the problem over the phone thus speeding up repair time”.

Russell Armstrong, managing director, stated: “We are building a team of dedicated people to help bring our vision to market, entering competitions and getting awards validates our teams success, so winning this accolade with our latest innovation, hotun detect, is an amazing achievemen.”

“The hotun dry-trap tundish not only made it easier to route the relief valve discharge to drain, it also made diagnosing that the valve had discharged simpler too.”

Mr Armstrong added: “By enabling this step change from passive to active warning, remedial work can be carried out before a breakdown or other serious problem, saving time and money for installers, homeowners and commercial building managers. It also works to prevent water wastage and excessive corrosion in heating systems due to make up water being continually added.”

The hotun detect has an electronic sensor which detects both the flow and temperature of water present in the dry-trap tundish. It then provides a visual and audible indicator, as a simple identifier for homeowners.

The unique design allows precise siting of the sensor, avoiding false alarms while still providing an alert even in a trickle flow scenario. Its clip-on design also means it can be fitted in seconds and is retrofittable onto all previously installed hotun dry trap tundishes.

On behalf of RA Tech UK, Russell Armstrong, would like to thank all those installers who choose to buy and use our products, all the event organizers and sponsors and above all wish to dedicate this award to Tim Lomax and in the Memory of Nick Shephard.

More information on the hotun detect range can be found at

4 November 2020


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