Myson TRV-2-Way Replacement Head


5.0 average, based on 3 reviews

Manufacturer: Myson

Product Information

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 20+ years old) valves used a smaller 28mm x 1.5mm thread. 

The picture below shows what the very old heads with m28 threads looked like. If you need to replace one of these you'll have to buy a new head and an adaptor (available in our store).

Old style Myson TRV head with 28mm thread




Product Code: MZG

EAN (barcode): 5013131302498


Brand : Myson

Average Review Score: 5 based on 3 reviews

Customer Reviews

Myson TR2 replacement head

Excellent service. Arrived in 37 hours and fitted easily. But why do they go Wrong?

John Millen :: 8 Oct 2016, 14:05

Myson 2 way replacement head

I recently purchased three replacement heads as another one of mine had broken, after 18 years and the new ones are direct and identical replacements. The other 2 are spares. The cost and post seemed very competitive and it was nice to be thanked for placing the order and to receive an e mail confirming the very quick despatch. They arrived the next day so 10/10

John Cairns :: 16 Oct 2014, 19:54


I have regained control, many thanks

T :: 12 Jan 2014, 14:12

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