“I'm a technology-adept volunteer who does routine maintenance on the 19-zone HVAC system in our UU church. Some of the zones are served by these Honeywell zone valves, on which the actuators sometimes fail after 20 or more years in service. Even in a crawl space, it's pretty easy to swap out the old one for new.”
“This zone valve head was the identical replacement for a unit installed 50 years ago. They supplied the advice and e-mailed instructions necessary to select and install the correct adapter plate to fit the old style valve body. Parts arrived swiftly & worked like a charm.”