The Difference Between Backflow Preventers and Check Valves

It’s no secret that backflow is one of the most prevalent threats to the purity of our local water supply. Not only can contamination happen everywhere, but it can happen at any time if your plumbing system isn’t set up to prevent it. As such, business professionals, school administrators, and homeowners are all setting out to stop this occurrence and protect the quality of their drinking water. However, this process often comes with confusion regarding what equipment they should use for the job. This article covers the difference between backflow preventers and check valves.


Though backflow preventers and check valves have the same overall function, they both work slightly differently. Check valves use a hinged plug that allows water to pass through the pipeline but blocks it from coming back. Backflow preventers, on the other hand, apply an increased amount of pressure on a pipe to ensure the water can only flow one way.


Backflow systems are generally more effective at keeping wastewater flowing in the correct manner because they’re highly pressurized. They also have several additional fail-safes that further protect our more sensitive drinking water sources. Check valves have a decent amount of reliability. However, they can fail under the right conditions and contaminate certain supplies with sewer water.


The increased reliability of backflow preventers makes them the preferred choice of anyone who needs to protect sources of drinking water, irrigation, or sprinkler systems. Check valves, then, are applicable in low-hazard situations for cross-contamination\

As you can see, there are several key differences between backflow preventers and check valves.. We at Backflow Direct specialize in supplying backflow preventers for the fire protection industry , and our services remain unrivaled in quality and efficiency. So, if you need a new backflow preventer, don’t hesitate to visit our site.