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Jacob_RampartSupply
Jacob_RampartSupply Member Posts: 4
in THE MAIN WALL
I had a customer come in with this and tell me that it came off of a domestic hot water heat exchenger. He told me there was two of them. The direction of flow and that fact that it says it is a vacuum breaker doesn't make much sense. Any help would be great.

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  • DanHolohan
    DanHolohan Member, Moderator, Administrator Posts: 16,706
    If it's a shell-and-tube heat exchanger

    and if there's steam in the shell, the shell would require a vacuum breaker so the condensate could drain when the control valve shuts. Without the vacuum breaker, water hammer will destroy the tube bundle. 
    Retired and loving it.
  • Jacob_RampartSupply
    Jacob_RampartSupply Member Posts: 4
    Thank you sir.

    That helps.
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