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Can any body help me locate sizing criteria forvacuum breakers on vessels.
Any inputs would be highly appreciated.
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Vacuumbreaker Sizing
Started by Azam, Jun 17 2003 12:32 AM
1 reply to this topic
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pleckner
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Posted 19 June 2003 - 06:29 PM
Contact ProtectoSeal (www.protectoseal.com) and discuss your problem in detail with them. They can help you choose a conservation vent, breather or vacuum breaker.
As a general rule, the amount of gas entering the tank will equal the amount of flow out of the tank. For instance, if you are pumping out 50 gpm of a liquid, then the gas inflow will be equivalent to 50 gpm (convert to cu. ft. /min.).
The only real thing to be concerned about is the size of the vent because there is a pressure drop to contend with. The pressure drop will be a function of the size of the vent/vacuum breaker. You can't get too low in your tank so this become critical.
As a general rule, the amount of gas entering the tank will equal the amount of flow out of the tank. For instance, if you are pumping out 50 gpm of a liquid, then the gas inflow will be equivalent to 50 gpm (convert to cu. ft. /min.).
The only real thing to be concerned about is the size of the vent because there is a pressure drop to contend with. The pressure drop will be a function of the size of the vent/vacuum breaker. You can't get too low in your tank so this become critical.
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