I've been re routing pipework in my bathroom to fit a towel radiator, but my boiler pressure has gone through the roof. I noticed that my expansion tank is full of water as it spurts out when I press the Schrader valve in.
My question is how do I empty the expansion tank of water so I can pump it back up with air?
My question is how do I empty the expansion tank of water so I can pump it back up with air?