Valve judders the 1st time a tap is opened after heating water up. Presume it's when there is more pressure than usual in cylinder. Air Pressure in expansion vessel at 3.1 bar. Pressure reducing valve is set at 3 bar. Cylinder temp at 50 degrees. This has only started recently after being in 4 yrs ?
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Caleffi unvented cylinder pressure reducing valve noise
- Thread starter bab
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When was it last inspected or serviced?
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- 22 Jan 2007
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How do you know the air pressure in the vessel is 3.1bar?
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