Been investigating the CH system (pretty old pumped CH/Gravity HW) before I repair/upgrade it.
This device is in the CH flow pipe:
For reference the pipe it is 10.5/l 86 C (as in centigrade)
What is it?
CH plumbing - what's this?
Oct 13, 2005
2 Replies
Could be:
- a non-return valve to prevent gravity circulation into the CH circuit. Or;
- a high temp limit to prevent rads overheating and causing burns.
With modern controls it is redundant now.
I'd hazard a guess that it's a non-return valve as my CH system has a weir (But different) valve on it.
It looks like it's a normal tap/valve type base but with a different head on it. I recon there'll be a washer/spring type thingumajig in there that lets the water through one way but not the other.
sponix
Join the Discussion
Have something to add? Share your thoughts — no account required.
Didn't find your answer?
Ask the community — no account required