Hey guys having a little problem and could use so help. Several months ago noticed that I had "water hammer " . Well I went and check the 2 arresters that are located on washing machine lines ( they are just hollow tubes no diaphragm) they werent flooded . I then drained the whole system in the house ( didnt drain hot water heater). Hammer stopped for a little while but started again ; I also noticed water on the floor around hot water heater ( heater is only 4 years old) . After several days I noticed that the pressure release valve was opening and releasing water. I then replaced the pressure valve ; within few days began leaking again and Hammer has come back louder. I have drained the system several times , replaced internal components of all toilets; added another arrestor on the main line coming into the house and still have water hammer and leaking pressure valve
. Anyone Have any advice greatly appreciate it?