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Does anyone have any experience of the above valves? We have a house with very long pipe runs and we have one of these fitted in 42mm pipe. We have been experiencing some problems after fitting a new boiler, as the original had 2 switched lives (1 for CH, 1 for DHW) and we have been trying to...

Hi Everyone, Hope you can help me out with this, had a little trouble posting. We have a condensing boiler with a mains pressure hot water cylinder. At present there is no thermostat fitted to the system which relies on TRV's As we have very long pipe runs with have a separate pump for the...