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Howling Noise From Coldwater Tank Ballcock During Refilling

Posted: Tue Jun 13, 2017 9:58 am
by dougaldan
Some time ago a howling noise started coming from the cold water tank in the loft during refiling. I replaced the diaphragm washer. Same problem but noise pitch changed. Replaced the diaphragm washer and the high pressure seat. Same problem but noise pitch changed again.

I would appreciate any ideas you may have. Is it just simpler to change the whole ballcock?

Doug