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As anyone came across a motorised valve without the manual lever? I had one with was a honey well 28 mm the merchant said it's for back boilers and they open up when a power cut has occurred. They are hard wired in.
Can someone explain there purpose and where there location is on a heating system.
Great thanks too you all.
Can someone explain there purpose and where there location is on a heating system.
Great thanks too you all.