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Sorting out expansion vessel and overtemperature valve

jack
in Boilers & Hot Water Tanks

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9 minutes ago, JohnMo said:

Sorry not read the thread - but an observation this is all G3 related stuff being discussed - should you have a G3 certificate to be playing with this?

 

Good point. I haven't mentioned it in this thread, but I'm absolutely getting a plumber involved. This thread is more about making sure I know exactly what I want done, as in my experience, trades tend to advise what's convenient for them rather than best for you (e.g., the last time I had a G3 inspection, the plumber installed - directly onto the tank- an overpressure valve designed for strictly cold water use, presumably because that's all the local plumber's merchant had in stock and he didn't want to come back again).

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    • John Carroll
      John Carroll

      If, (which it probably has been) the EV precharge pressure has/had been set to 3.0bar and even assuming that the cold water pressure after the PRV (set to 3.0bar) never went higher than 2.0bar before

    • Nickfromwales
      Nickfromwales

      Zimlet are popular, and tbh most mainstream names prob just stick their mark on these anyways.    Once you sort the expansion, I’d say just double it, you’ll be able to fit the same T&PRV (

    • jack
      jack

      I'd need to check, but definitely nothing like 90 deg.   The issue is that the immersion is quite low on the tank (the upper immersion died and I've never gotten around to replacing it). By

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