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still lossing water pressure after changed pressure value?

I have a worcester 28cdi boiler which leaking water from the pressure value. I changed the pressure value. It seen o.k. for 1-2 days but it leaking water again from the value. Does anyone know how I can fix this?
Many Thanks!

Johnny
November 2009

Worcester D.I.Y, Plumbing Water Changed Leaking

drain the heating system, check the red expanshion vessel it full be full of air about 1.5 bar if not could be your problem

erj
November 2009

The PRV will start opening at 3 bar.....keep your boiler pressure between 1 and 1.5 bar and see what happens then.

John
November 2009

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