What happens in the field when you need to loosen a union to service a valve?  Do you always need to replace the sealing elements?  How can the Posi-Stop™ embedded O-ring union system help?  Which products are shipping now with Posi-Stop?   Former service plumber and current Caleffi tech. support...

In this episode, Greg and Dan talk to "the man, the myth, the legend" of zone valves, Mike Schreiner, Caleffi CTO.   Mike has been working with zone valves for his entire career and is pleased to share his wealth of knowledge to help our Ask Caleffi audience learn: What's important when...

What drives the adoption of solar hot water systems?  Are there specific factors that signal the beginning or end of a spike in system installations?  Which applications are always a good fit?  What qualifications do you need to work on these systems?  How do you evaluate a site to know if the...