What is a back flow valve? To understand what it is, we first must look at its purpose. In 1972, Congress passed what is generally known as the Clean Water Act; it was actually entitled the Federal Water Pollution Control Act.  Subsequent additions to that act were passed in 1977 and 1987. The main thrust

The city of Carrollton, Texas requires annual backflow testing of all backflow preventers, backflow devices and backflow valves, as part of the Carrollton Backflow Prevention Program as required by the state of Texas and federal law.  This program is maintained in order to protects the water distribution system and to guarantee that potable water will

What is a backflow prevention device? To answer that question we must first understand the phenomenon known as backflow.  Backflow is the reversal of flow within a water supply.  It is generally caused by either back-pressure or back-siphonage.  The most common situation is the drastic decrease in water pressure from main water supply to a