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Hi, I had to drain some water from my combi worcester 28 system yesterday. I'm guessing around 20 or 30 litres but I'm not sure. Having very recently learned about inhibitor I'm guessing I need to replace some. It comes in a tube that treats 100 litres. My question is because I don't really...

Hi. I had a leak (bad olive) on my hall rad valve. I turned off the stop cock and the good rad valve and after a couple of pans of water later it stopped. I replaced the olives, tightened everything back up, stop cock back on and repressureised the combi ( worcester 28 ) back to 1 bar. I bled...