Please help identify these UFH bits...

[sharpener]

Anyone able to tell me what brand this manifold is and more importantly if/where I can get replacement flow gauges?

 

I think it may date from 1995 when the barn conversion was done, certainly before 2007 when we moved in.

 

The gauges have a 10mm a/f hexagon at the top. For reference the flow adjustment takes a 5mm Allen key. I have tried all manner of cleaning agents, detergent, vinegar, citric acid descaler, nylon scouring pads, you name it. Nothing will shift the black deposits inside. Also one of them seems badly out of calibration wrt the others, perhpas the spring is damaged.

 

 

Also this mixing valve. Unusually the hot inlet is opposite the adjustment knob, the cold comes in at the bottom (as installed) and the mixed output goes out the top as you can see from the arrows on the body. Which makes replacing it difficult.

 

It had a lot of limescale encrustation so I have cleaned it up with descaler and the internals are now free to move with the knob settting. Howevere there does not seem to be anything inside that depends on temperature, so is it just a fixed ratio mixer? perhaps someone (? @Nickfromwales) will be able to draw on their decades in the trade and tell me.

 

TIA!

 

elp

[Nickfromwales]

Do you know what size UFH pipes? 16mm or other?

 

Not seen those before but the flow controls being on hex keys usually signifies a bit of quality, but with that said it is a dinosaur!

 

I’d like to simply say just replace it, vs set fire to good time and money, but you’d need to get the pipe sized to match a replacement kit around.

 

I’d not take on refurbishing that if I was asked to do it on price, as I think 🤔 be issue will start another, and the TMV and seals are all prob on borrowed time. The minute you start to disassemble this I think you’ll begin to regret it.

 

This looks like it’s on borrowed time tbh. 
 

Oh, and no, sorry, not a clue on manufacturer.

[sharpener]

Tks for yr reply @Nickfromwales. Pipe o/d is 20 mm.

 

Wholesale replacement not a project I would want to embark on in Feb, just trying to turn down the flow to/from the HP a bit so the return does not pull the temp down for the rads.

 

Do you have any pet methods of cleaning the sight glasses, or any thoughts on whether the mixer is thermostatic or not? By chance I found a circular offcut of MDF so at least I have a replacement knob now!

[JohnMo]

On 21/02/2025 at 23:17, sharpener said:

Do you have any pet methods of cleaning the sight glasses

Not if anything on this video will help