Repair a Leaking Backflow Preventer

What You'll Need
A wrench
A water pressure gauge
A screwdriver

Backflow valve is an important device that prevents your main water source against contamination and pollution with its ability to stop the fluid from moving rearward. Thus it is also important to check the backflow valve for any leaks and to make necessary repair to ensure that your family’s health is safe from any germs. This article will teach you how to test your valve for any leaks and how to repair it if necessary. Follow these simple instructions and your drinking water, your family, and your health will be secured once you take care of your backflow valve.

Step 1 – Look for the Test Valve

You need to look for the test cock valve and the shut-off valve located in your backflow prevention valve. Both of these items are important in testing the valve. Location of these items varies depending on the product type and the manufacturer. Carefully examine your backflow prevention valve so you can easily locate the test cocks.

Step 2 – Examine the Opened Test Valve

Once you have successfully located the test cock valves, proceed to opening it using the wrench. Turn it a 1/4 inch or at a 90-degree angle from the start. Test the flow of the water by turning on the water and let a few water drip through it. By this time, the water may travel backwards through the system. Here you will have to check the relief valve if it is tightly secured lest the water comes running through it. Check also if it starts to leak and check if it is completely closed using the screwdriver. Push the side of the valve with your screwdriver and if it opens then ii is confirmed that your backflow valve needs to be changed.

Step 3 – Inspect the Water Pressure

Use the pressure gauge (either purchased or already attached to the valve) to examine the existing water pressure within the valve. Your valve is normal if the pressure stays even if you opened the test cock. Meanwhile, if the test cock is turned on yet the pressure you read in the gauge is increasing then you must replace the valve lest it causes greater damage. Do inspect the water pressure in your house so you will have a guide once you take the realistic measurement and information if indeed the water pressure rises when the water fights to flow backwards.

Step 4 – Let a Professional Assist You

There are communities that do not allow you to conduct your own testing of the valve, so you find out before you start. Consult a professional to assist you or let the professional do it for you instead. The advantage of seeking professional help is that they are able to do this process more efficiently, identify valve related problems that you may have missed, and test all the valves in the system. The money that you may invest in them may prove worthwhile as compared to the cost of damage or injury.