Why a Vacuum Breaker?

General Questions and Comments that fit no specific category.
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Endo

Why a Vacuum Breaker?

Post by Endo »

A post on H-B got me thinking about this:

Question: Why does the Vivaldi steam boiler have a vacuum breaker if there is no p-stat to give "false pressure" at start-up?

And the follow-up question:

What would happen if I remove it (when it fails) and install a plug instead?
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