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Mend Pressure Gauge Boiler Tap Fill

pressure gauge keeps reducing?

the preesue gauge keeps reducing then knocking boiler off, as soon as i open the tap and fill the gauge to required level it goes ok, then just drops again,

garry
March 2010
Check for any leaks- under boiler, radiator valves etc

check copper pipe outside for signs of discharge. may be a PRV or expansion vessel problem

P
March 2010
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