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vacuum breaker

   Also found in: Wikipedia 0.03 sec.
vacuum breaker [′vak·yəm ‚brāk·ər]
(engineering)
A device used to relieve a vacuum formed in a water supply line to prevent backflow. Also known as backflow preventer.


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Four-station self-contained RRB-4 portable conveying system includes a vacuum breaker valve, RRB and cartridge filter.
Vacuum Circuit Breakers: Vacuum breakers are a vast improvement over air magnetic breakers.
Check the seal on the cyclone's dump can, the filter-housing lid seal at the pump, the vacuum breaker valve (verify it has air at 85 to 100 psi), and all piping connections.
 
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