Myson TRV 2 Way Replacement Head

Myson TRV 2 Way Replacement Head
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5.0 average, based on 14 reviews


Replacement head for Myson TRV-2-WAY thermostatic radiator valve. Interchangeable with the standard Myson thermostatic head (which looks the same, but has red markings and a white bottom section).

Head only - no valve included.

Our video shows details of the head, including how to identify a faulty head and how to replace the head.

Faulty Myson TRV head compared to a good one

Myson TRV heads are normally very good and last for many years, though one failure that can occur is an internal fault that causes the centre pin to be permanently stuck in the out position. This failure results in the valve being shut off and a cold radiator. The picture above shows two heads, a faulty one on the left and a good one on the right.

The metal lock ring has a 30mm x 1.5mm metric thread. Myson has used this thread for a long time, though very old Myson (we're not sure how old, probably pre 1997) valves used a smaller 28mm x 1.5mm thread. The older valves are not marked 2-Way and look completely different.

TRV 2 Way valve heads made between 1997 and 2012 had a symbol like the greek letter PI, this newer head, with the EN215 keymark symbol is a direct replacement.

Product CodeMZG

Customer Reviews

Average Rating: 5

Myson TRV-2-Way valve head

WOW What a service a business that actually does what it claims quicker than going down my local DIY store even when I stupidly entered my previous address Mike took the time to contact and check Many thanks hope to do business again ( 9 Jun 2018, 12:34)

Super Fast Delivery

Ordered the item on Monday, received in the post on Tuesday. Will fit tonight. Great service, many thanks. (27 Mar 2018, 11:55)

Quick and Competitive

Video and detailed product information page was very informative, so I knew it was the product I needed. Best price I could find online, and arrived the day after ordering. ( 5 Jan 2018, 17:16)


Ordered 2 for my radiators. I know nothing about DIY and easy as the installation is I was a little apprehensive. That is until I watched the brilliant video instructions - clear and gave me all the confidence I needed to do it myself! Will be getting another shortly and definitely recommend. Quick and efficient service. Regular email updates on order. Just 1st class service really. Parts with me in 2 days and that’s with Christmas post. Thank you (28 Dec 2017, 22:21)

Myson TRV 2 Way valves

Absolutely first class service, ordered 4 units late Monday evening, auto accept directly. Tuesday by 09.30 confirmation order complete, in my hands by Royal Mail Wednesday mid day, and more competetive than the Am site. Well done will certainly recommend you to friends. The information video was first class also, no doubting faulty units after watching. Well done to everyone concerned. Thank you ( 8 Nov 2017, 15:45)
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