BklynProf
New Member
We didn't even have to replace the fill valve, the noise stopped as mysteriously as it started. Thanks for the suggestions!1. Partially closing the stop valve at the wall will reduce water hammer
2. They make water hammer arrestors that go between the stop valve and the flex supply line. https://www.supplyhouse.com/Oatey-3...Female-Compression-Copper-Tee-Hammer-Arrestor
https://www.supplyhouse.com/Sioux-C...on-x-3-8-O-D-Female-Compression-Tee-Lead-Free
https://www.menards.com/main/plumbi...-arrester/660-gtr1/p-1444442678868-c-8565.htm are 3/8 compression type (male+female), which is a common output for toilet stop valves.
3. There are different opinions on whether the Korky 528 QuietFill fill valve will be quieter.