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Thank you. For the sake of convenience, I’ll grab a flexi like you suggested and drain off fitting to connect to a garden hose. Thanks for your help. It’s clearer in my head now what I need to do.

Amateur question but what fitting/hose would you use to drain from the rad valve? Or would you just catch in a tray under the rad valve and stop/start as it fills?

Thank you for the advice. Draining down was my gut feel so I could take my time but wasn’t sure if it was overkill for replacing a valve. Just need to find some 8mm ID pipe now.

Do you hear any noise at all from the boiler? Any relays clicking when calling for heat? The pressure switch on these can be problematic I believe.

I was looking to drain down my CH system this weekend to fit TRVs throughout the house as none were ever fitted downstairs and half of the upstairs valves are stuck open or closed but I seemingly have no drain off. I do however have a T piece lockshield on all of the downstairs radiators with...

Sorry! Wrong forum :(

Hello all, Got a leak from where the push rod comes through one of the valve diaphragms to the microswitch. Do I need a complete diaphragm kit or just replace the gland nut and o-ring? If i need a full kit, which kit do I need? It's the 80E (I believe there were two valves) and it's...