Dual check valve assemblies, otherwise known as double check assemblies, are the most commonly approved backflow preventers on the market.  They are used for inline or underground sprinkler systems.  About the only things they are not used for are irrigation systems which contain hazardous substances.

But let’s back up a bit and discuss what a dual check valve assembly is used for.  Let’s get specific!

For most people, lawn care means mowing, but it also means the use of fertilizers and sometimes pesticides and manure.  As you well know, those fertilizers and pesticides leak into the ground, and in a functioning system that leakage flows away from the home into the sewer system.  That is a perfect world and that’s how it works 99 times out of 100.

But…..

What if the natural flow was disrupted? What if the water pressure reversed, and contaminants leaked into the potable water supply and flowed back into the city’s supply?  What then?

Impossible you say?

It happens every single day in the United States.

That is why annual inspection of backflow devices is so important, and that is why the best backflow testing companies install dual check valve assemblies.  When the pros trust the dual check valve assemblies during their back flow test,  there is every reason for you to trust them.

When is this condition most likely to occur?

When a water main breaks, when there is a major power outage, and when there is a major fire and several fire hydrants are opened at the same time….these are the danger moments for backflow to occur in a city.

As the name suggests, a double check valve backflow preventer gives you double the protection, two valves which automatically shut down at the first sign of reduced water pressure, and those dual valves will not re-open until the water pressure is raised and maintained.

And that means you and your family will be safe from backflows.

Backflow preventers should be inspected once each year and in fact homeowners are required to do just that under Federal law.  And where should you turn for affordable backflow testing?

City Backflow Testing is the name in Texas to trust in backflow device installation, inspection and repair. With decades of experience and a name that is synonymous with trustworthy, City Backflow Testing is the only company you should trust to take care of that dual check valve assembly.  When your family’s safety is at stake, don’t you think the best in backflow testing is a no-brainer?