New answers tagged valve
Ok - when unmounting the thermostat, I noticed the manufacturer's name (Danfoss), and from that I was able to find the valve type, which is Danfoss RAVL
On the existing valve, you loosen or remove the screw. This will allow the fingers under the grey strap to expand, allowing you to just pull the thermostat off. To install your thermostat, move the metal ring down. It might actually be threaded, so turning it may be required. Push it on to the radiator, and move/turn the metal ring back in to place.
As far as I can tell, what you have looks correct. It's very similar to the 3570 and that would require a 1225 cartridge. However, I see that Lowe's (and probably most hardware stores) sells kind of a one size fits all cartridge by Moen for their older valves. The 1200E is most likely what you need. 1200E - Metal faucet - "Replaces single handle cartridges ...
If the valve handle is any indication for what its' function may be, than there is a very likely chance that it is a shut-off valve for: A. water supply (for flat above?) or B. sprinkler system (not likely). The valve type is either a "gate" or a "globe". Either of them are designed to control water (liquid or vapor) flow. Additionally both valve's have a ...
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