I'm using it for my in floor radiant heating loop. My valve doesn't "go in or out" when I turn it either....
I think I'll just turn it all the way one way, then try it the other way and see which way makes it hotter or colder. Then I'll know which way to adjust it.
Well, mine really doesn't go in or out either but just the way I worded it. How bout lefty loosey (colder) righty tighty (hotter)
Also, the one I have was sent to me when I purchased all my "stuff" for install. I could not get the water hot "enough" because it was a low temp valve. There is a stop "pin" under the knob which only lets you turn it so far, I had to remove the knob, lift it off, turn past pin, set back down......then I was able to adjust it further to get my desired temp (90 degrees))