Elasto-Valve Rubber Products (EVR), a manufacturer of rubber duckbill check valves, is drawing attention to the expanding role of duckbill valve technology in backflow prevention across wastewater, ...
If you're selling your home in Minneapolis or Bloomington, you'll probably have to pick up a vacuum breaker or two. A vacuum breaker, commonly referred to as a backflow preventer, is a device that ...
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