I am having this issue with my new 1" pressure regulator. I read in places about fixes for water hammer, but this doesn't seem like water hammer. I also read about need a heat expansion tank, but when I turn off the cold water feed to my hot water heater the noise still comes out. This would lead me to believe a heat expansion tank would make no difference.
I just redid the plumbing and replaced my 1/2" copper feed from the meter with 1" pex and replaced the 1/2" regulator with a 1". On the 1/2" we did get noises like this occasionally, but this is all of the time. I am open any ideas or suggestions. Thanks.
Video of issue
https://www.youtube.com/watch?v=zPQ8xRBbjPk&feature=youtu.be
I just redid the plumbing and replaced my 1/2" copper feed from the meter with 1" pex and replaced the 1/2" regulator with a 1". On the 1/2" we did get noises like this occasionally, but this is all of the time. I am open any ideas or suggestions. Thanks.
Video of issue
https://www.youtube.com/watch?v=zPQ8xRBbjPk&feature=youtu.be