Oventrop differential-pressure regulators deliver 10 years of problem-free service

Published:  18 March, 2007

Oventrop
While the heating system for dwellings on the Byker estate in Newcastle has seen a CHP system replaced with boilers, which have since been replaced with new boilers, Oventrop Hydromat differential-pressure regulators continue to work reliably.

10 years ago, Newcastle City Council began installing Oventrop Hydromat differential-pressure regulators in dwellings on its Byker estate to facilitate hydronic balancing and eliminate system noise. The valves are said to have given trouble-free operation ever since.

The original project was part of an overall refurbishment of the 1740 properties. Because problems had been experienced with previous equipment, alternative regulators were investigated.

A pilot scheme based on 60 dwellings used Oventrop units. Such was their success that these regulators were also used in an on-going conversion programme. Despite the original CHP system being converted to heat-only and then recently refurbished with new boilers, the Hydromat valves have continued to function without problems.

Each control train consists of Hydromat differential-pressure regulator linked by a capillary to a Hydromat double-regulating valve to provide regulation of both flow and differential pressure. Each train also has a strainer, motorised control valve and various isolating valves.

Traditionally, differential-pressure regulators require a small flow through a by-pass for them to function correctly when TRVs have closed the system down. By designing a differential-pressure device that does not required a bypass, which is commonly used, Oventrop has eliminated the associated unacceptable noise levels.

Commenting on the success of the scheme, Duncan Robson of Newcastle City Council said that the valves had given no problems worth mentioning. ‘We made a good choice, and the valves have proved their reputation for reliability.’



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