Differential Pressure Valve

3 Apr 2005
Reaction score
United Kingdom
My CH system has TRVs with a fixed (ie gatevalve) bypass loop. I am looking to fit an automatic bypass valve and have been checking what Screwfix have to offer. Sure enough, they sell a suitable valve for £24.99. However, they also sell something called a "Differential pressure valve" for £14.99 which claims to perform the same basic task.

So, what is the extra 10 quid for. Is one of them just higher quality, or is there some technical difference between an auotmatic bypass valve and a differential pressure valve.

Thanks in advance,
Sponsored Links

DIYnot Local

Staff member

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Sponsored Links