Discuss DRAYTON tvr4 in the Plumbing Jobs | The Job-board area at PlumbersForums.net

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do drayton have reducers to fit the older style tvr head valves?
i have a customer with an 8 bed property with 28 rads to an aga and 1920's heating system so dont want to drain down to change the heads as my insurance dosnt go as high as the parquetry floors in the house or the patience in refilling the system:eek:mg_smile:

the old ones have a lot smaller locking ring size around 3/4'' knuckled rather than knurled ring with a black sensor vent at the botton and notch window for the setting numbers if that helps:skep:?

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Looks like a trv3. Drayton do a trv4 head that fits the trv3 body, called a trv4c part no. 07 940 12
Not cheap so might pay to get one and check it fits if you need a few..
Also Honeywell do adaptors for the trv3 for the evohome stuff but not sure if the trv4 head fits on them. Adaptor for trv3 is an AD3
 
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