Thermostatic Blending Valve Identification

[bwel]

Hi All,

Can anybody identify this Thermostatic Blending Valve from my Underfloor heating ?

It seems to be stuck on full temp and not mixing the cold flow.

 

[Chalked]

This one is pretty close. Will do the job too.
https://www.heatingcontrolsonline.c...m-p-410.html?gclid=CIHA7evZ29ECFQ6eGwod06oKbg

 

[Chalked]

This one is pretty close. Will do the job too.
https://www.heatingcontrolsonline.c...m-p-410.html?gclid=CIHA7evZ29ECFQ6eGwod06oKbg
View attachment 28770

 

[bwel]

This one is pretty close. Will do the job too.
https://www.heatingcontrolsonline.c...m-p-410.html?gclid=CIHA7evZ29ECFQ6eGwod06oKbg
View attachment 28770

Similar, but mine is 28mm

 

[Chalked]

Sorry.
Looking at your photo, the flow/return and mixed are different.!
It will still work, with a bit of modification to the pipework.

 

[bwel]

Similar, but mine is 28mm

Aha, they also have a 28mm version. Thx

 

[Chalked]

Here it is.
It's a caleffi.
http://www.spatec.co.uk/files/Download/at520440.pdf

 

[Chalked]

Here it is.
It's a caleffi.
http://www.spatec.co.uk/files/Download/at520440.pdf

 

[bwel]

Sorry.
Looking at your photo, the flow/return and mixed are different.!
It will still work, with a bit of modification to the pipework.

Yes, just noticed the dimensions are different. I really want a straight swap out, so dimensions are critical.

The other option is that I try taking it apart and cleaning it out.
Has anybody had good success in taking blending valves apart and cleaning them up ? Any tips ?

 

[bwel]

Here it is.
It's a caleffi.
http://www.spatec.co.uk/files/Download/at520440.pdf

Yes, def a Caleffi. But the dimensions are different in the current products.

 

[bwel]

Found the right one and ordered.

Many thanks Chalked