“These are very reliable, even on well water. Have had very few failures of this brand over the last 20 years. I use these when I replace other brands even if I have to cut pipe. It's worth it to make sure it does not "Boomerang" on me!”
“The directions say loosen the screw then pull on the adjustment knob and turn it to adjust water temp. Should also say how far to loosen the screw. I found out it has to be loosened up almost all the way, which is over a half inch.”