Prevent Water Contamination with Backflow Preventers

When you turn on the tap, the water arrives in your home from a regulated source such as a filtration plant. When you use water to clean utensils, wash clothes, or taking a bath, the waste water goes back out of your home through the pipes installed to deal with it. But, several times, outlets get blocked due to which backflow occurs in which the waste water you dispose of flows back into the clean water supply. The good news is, modern plumbing systems have a solution for it– backflow preventers.

Waste water coming from your home comprises of waste materials and harmful chemicals that can be hazardous to your health if the waste water reaches the clean water supply. Using that contaminated water can result in serious medical conditions. Backflow preventers prevent this probability.

Water pressure in any water line, coming in or going out, keeps water flowing in the right direction. But when the pressure drops due to any plumbing issues, the water stops flowing in the right direction. When the pressure issue occurs in the pipes for waste water, then the backflow occurs.

Backflow preventers come in several types and prevent the contaminated water from getting into the contact of clean water supply. All backflow preventers block the backflow and send the water back in the direction it should go. Some common types of backflow preventers are air gap valves, reduced pressure detectors and valves, double check valves, and vacuum breakers.

Air gap valves are the simplest backflow prevention tools. They create a gap that water flowing back cannot cross. It is installed just below a faucet. Reduced pressure detectors and valves have a separate chamber between vales that tracks the pressure in connected pipes. The pressure of the chamber is kept lower than that of outlet pipes. So, as the pressure reduces in the outlet pipe, the check valve to the fresh water is blocked and backflow is prevented. Double-check valves work as backflow prevention gates. Vacuum breakers are installed a few inches above the pipes and its elbow blocks the access to the fresh water supply.


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