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Mend Pressure Boiler Radiator

How can I fix my pressure gauge?

The pressure gauge (a dial) has two pointers, a red one and a black one. After the last service on the boiler, I believe that both pointers were on the figure 1, but now the black pointer is almost outside the four mark, although the red one is still on 1. Is this something that I should be concerned about? I don't know how to modify the pressure.

Rahul Patel
February 2008
Heating, Oil Filled RadiatorsPressure Boiler Radiator
Your boiler has been overfilled with water - hence the pressure gauge reading to high. The simple way to do this is to open a radiator bleed valve and catch the water that squirts out, but be patient as you'll have to remove a pint or two until the black pointer comes in line with the red one.

John
February 2008

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Boiler Pressure Gauge: Red & Black Pointer Issue