“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. Fair price with quick delivery.”
“Kind of 'spensive, but great quality. Cool wiring diagram explaining how there is a common point in two actually separate circuits. Don't overheat the valve body, cause you could damage it. Generally you won't have trouble, but I really torchured (pun intended) one, and had that happen. Just know if you put fire on it forever without adequate protection from the heat, you will need to buy another one. A quality, proven product - basic design on the market for... who knows, 40+ years. When I think of zone valves, I think of these. Love them. Wish I saw more of them and put more in.”
“Though I needed just the top part, I found the price so good I replaced the whole unit. When I told them that another seller had a few dollars less, They still had a better price and service.”
“Don't know why, but both type L and type M tubing was 'loose' in the ports. I took the valve apart to solder it because of the heat required to heat the thick brass. I was able to get a tight seal even though the pipe wasn't snug in the port as it should have been. Tip - use a small C clamp to hold the valve in place when you screw the plate back on after soldering, it's much easier to compress the spring that way. Besides that issue, the valve works flawlessly.”
