#32 What are the top 5 hydronic expansion tank questions? (with Cody Mack) Artwork

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Welcome to the Ask Caleffi podcast series featuring our tech support wizards, Greg Tubbs and Dan Firkus! They will discuss tricky heating and plumbing system problems they are tasked with solving daily and share insights from the field to help contractors discover the best way to work through tough jobs. Count on this dynamic duo to keep the series fun as they mingle in their own entertaining and relatable stories.

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#32 What are the top 5 hydronic expansion tank questions? (with Cody Mack)

January 11, 2022 • Caleffi North America, Inc. • Episode 32

An expansion tank is a very simple hydronic system component, yet it can cause complex troubleshooting woes. Improper charge expectations, waterlogging and sizing can all play a role. How can you determine if the expansion tank is the culprit for nuisance relief valve discharges?

In this episode, Cody Mack tells you how to whisper to an expansion tank in this service-focused conversation between three former field techs. Should you trust a factory precharge? How do you avoid "bear-hugging" an expansion tank to relieve an over-pressurization? The guys cover the ways to put your best foot forward with a new expansion tank, relating to proper acceptance volumes and when multiple non-ASME vessels may be an option. They also point out a few tips and tricks they have picked up to determine if the existing expansion tank needs some help. Caleffi components like air separators and steady boiler fill valves are part of the equation, too.

Thanks for joining us today.

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