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Any one know how to size a vacuum breaker

Any one know how to size a vacuum breaker

Any one know how to size a vacuum breaker

(OP)
I have been appointed to size a vaccum breaker in slurry pipe line. Does any one have experience in doing this?

RE: Any one know how to size a vacuum breaker

We have atmospheric tanks that will be blanketed with nitrogen, only a few inches water column over pressure.  The tanks will have PVRV safety in case the nitrogen generator fails while the tank is pumping out.  We could then pull a vacuum, collapse a tank, ETC.  The vac relief sizing is based on maximum flow rate out gpm from the pump curve converted to air flow SCFM for sizing the vac relief.

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