Before winterizing, I attempted to close the 2 bypass valves(see photo below...one at the cold and one at the hot..grey, metal "half wing" handles) in our (new to us) 1995 PW and discovered they would not turn.
I unscrewed the handles, took them off, used different lubricants but to no avail. Since the previous 2 owners always kept this PW in heated garages, I suspect they had no need to winterize or use the bypass valves. My guess is that they have corroded over the years and are now "corroded/stuck" in the open position.
Is there anyway to make these work again short of taking the assembly all apart?
Logically I am wondering why there are 2 bypass valves. Would one bypass valve not do the job of keeping the antifreeze from going into the hot water tank?
If I left the original bypass valves as they are, in the open position.... and put in a new bypass valve in the center of the white hose (that goes between the 2)..........is this a good
? Is it doable?