“Installed 7 Taco 571 zone valves November of 1985. They have given me maintenance free service since then. I have a few that have become somewhat finicky over the past year or so and am in the process of replacing them along with replacing my EFM 520 coal stoker that has been flawless for 35 years. Most of the 571 valves still work as expected.”
“The product cannot stand water with minerals in it, and Taco's guarantee is worthless according to the Chicago areas rep. The seat sticks, you just buy a new one, Taco won't help. Design wise I can't help, all I know is some last a couple of months, some last years.”
“Installed two of these and wired to a Taco Zone Valve Controller. The controller takes care of the sequence of operation and eliminates valve-to-valve/ t-stat to t-stat wiring.”
