A question for the Backroom plumbers (if there are any).
We have a cold water tank in the loft and it's been making a bit of a noise filling up. Yesterday, I took a look to see if the ballvalve was operating correctly and found that whilst it was shutting off cleanly, it had a small hole in the side of the casting resulting in a fine spray when it was filling. Down to Wickes for a high pressure Part 1 replacement. Fitting went smoothly.
Trouble is, the new one makes more noise than the old one. It's a different noise, SWMBO says it sounds like a plane landing. The noise is coming from the feed pipe, 15mm copper which runs up through the house. I'm assuming the noise is created by the flow of water resonating the pipe. What's the cure? The pipe is all boarded in, so can't be got at.
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