BlackFlow Valve Broken?
My backflo valve seems to need replacement, but not complete sure if I need to replace the whole valve or can just replace the handle assembly.
When I turn either one of the handles, they don't seem to do anything. I can turn them in both directions endlessly.
Secondly, forget for a second that they may be broken, how are these supposed to be set? That is...is the fist one (nearer water supply) supposed to be open or closed? Are they both supposed to be open?
Not sure how it is supposed to work.