The tools slide directly into the grooves on a valve’s perimeter, providing the necessary leverage to safely remove and precisely replace the #1 and #2 cam checks. The ratchet or breaker bar is not included.

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Jupiter, FL-based Check Key emerged from the frustration of a licensed backflow tester and South Florida plumbing company owner. He was locked in a constant battle to remove stubborn cam checks while servicing Ames and Watts backflow assemblies. Without proper tools, he and other technicians also struggled to reinstall the valves tightly enough to properly seat them after service.

Four separate tools designed to work with #1 and #2 check valves in 2 1/2″, 3″, 4″, and 6″ sizes can be purchased individually or in sets. Check Key tools work in both RPZ and DCV backflow preventers. Each device comes with a lifetime warranty against breakage under normal usage that includes full manufacturer replacement.

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The sole job of a backflow preventer is to keep drinking water pure by preventing the non-potable water in a building’s systems from backing up and contaminating it. “Potable” water supplies are treated and drinking-quality.

It is a common problem for the central water line to flow in correctly without a proper backflow preventer. Thank you for this article that sheds light on this common issue.

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Be sure to check out our selection of Backflow Check Key Tools and Toolsets, which quickly remove or install cam checks found in Ames and Watts backflow prevention assemblies.

Regular maintenance and timely repairs are vital to a backflow preventer’s ability to protect drinking water from potentially harmful contamination. But until recently, removing and installing check cams from backflow assemblies could be a difficult process—risking injury to the valve, service tools, and a technician’s hands.

Manufacturers often recommend using a screwdriver to remove or replace check valves. Unfortunately, this technique can not only be dangerous, but it may not even work. In fact, if the check valve is installed correctly, the force needed to remove the assembly may break some tools and the cam check itself—and worse, injure the technician’s hands.

Be sure to check with your local water authority to understand specific requirements for backflow preventers in your area.

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central water supply line is only meant to flow in one direction: into the property. But sometimes, pressure changes in the pipes can cause unwanted backflow, enabling water to reverse into city water supplies.

The most common backflow prevention assembly found in fire protection systems is the Double Check Valve (DCV). It relies on two cam checks, better known as check valves, assembled in a series to prevent water from backing up into the supply line. Together, they regulate the flow and pressure of the water that moves through plumbing and piping systems.

The redundant assembly ensures that one check valve will continue to protect the city water supply even if the other fails. It also enables the closure of one valve to reduce the pressure differential across the other, creating a more reliable seal and avoiding even minor backflow leakage.

A mixing valve is a mechanical device that mixes cold water with hot water to deliver mixed, or tempered, water downstream (think of your shower valve).

Maintaining backflow preventers is vital to ensuring that harmful contaminants from building systems don’t pollute city water supplies. But without the proper tools, attempting sprinkler system backflow valve repair or maintenance can make the situation worse—damaging the check valves you’re trying to remove, as well as your screwdriver and your hands.

It’s great to know that the central water supply line is only supposed to flow towards the property. My brother is having issues with his sprinkler system right now and he needs help. I think that he should find a plumber that can help him prevent some of the backflow issues he is having.

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In this blog, we will show how Backflow Check Key Tools make it easy for technicians to quickly and safely service check valves on Ames and Watts backflow preventers in the field. Manufactured by Watts Water Technologies, Ames and Watts represent two of the most popular brands of backflow prevention assemblies.

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Once installed, both types of backflow prevention assemblies are expected to provide decades of protection for city water supplies. But various conditions such as excessive water pressure, water quality, temperature, or dirt and debris can cause performance to deteriorate. Regular maintenance is also key to keeping backflow preventers in tip-top shape.

RPZ backflow preventers add an extra layer of protection with the addition of a hydraulically operated differential relief valve. The relief valve makes RPZ devices basically fail-safe; if either check valve should leak, the relief valve opens and discharges water to the outside, ensuring that backflow never occurs.

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Reduced Pressure Zone (RPZ) backflow preventers are typically used in sprinkler systems that are considered “high hazard” because they contain harmful chemicals like antifreeze that could threaten public safety if they seep into city water supplies.

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Ready to make servicing backflow preventers painless and straightforward? Be sure to check out our selection of Backflow Check Key Tools and Toolsets.

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Our previous blog, “How Does a Backflow Preventer Work?“, offers extensive detail on how backflow preventers operate and when they are required on fire protection systems. Stay tuned for our next blog, which explains the difference between check valves and backflow preventers —helping property owners and facility managers understand why the added cost and complexity of more sophisticated backflow prevention assemblies are needed to protect drinking water.

Remediating such backflow issues can be expensive: the Environmental Protection Agency (EPA) states that the average backflow incident takes nearly 500 hours to fix at a cost of $14,800.

“The Check Key Backflow Tools were developed because Ames does not make a tool for the job, and we were tearing the check valves up getting them out,” the inventor of Check Key, a 39-year veteran of the plumbing industry, explains on the company website. “With Check Key backflow tool, there is no more tearing up the check valve by removing it with a screwdriver or having a leak from not installing it tight enough.”

Comprised of durable, solid steel in a simple crosshair design, Check Key’s patent-pending tools were created to help technicians quickly and painlessly remove and replace check cams. When paired with a ½” drive ratchet or breaker bar, they easily turn check valves in the bodies of Ames Silver Bullet and Watts 774 – 994 backflow preventers.

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Backflow Check Key Tools easily remove and replace check valves from Watts and Ames backflow prevention assemblies, ensuring non-potable water in building systems doesn’t flow the wrong way.

Local plumbing codes set forth requirements for backflow preventers in building systems, such as fire protection equipment. They also typically require backflow preventers to be tested regularly and maintained by certified professionals to ensure they are reliable and functioning properly.

This blog was originally posted at blog.qrfs.com. Check us out at Facebook.com/QuickResponseFireSupply or on Twitter @QuickResponseFS.

Backflow prevention assemblies stop the undesirable reversal flow of water or other liquids, gases, or substances into potable water distribution pipes.

Backflow can be dangerous to public health and safety, contaminating public drinking water with fertilizers, pesticides, human waste, harmful chemicals, and more. Bacteria can also fester in the stagnant water in fire sprinkler system pipes, sometimes creating a thick, smelly, black, oily sludge that may cause serious issues if it reverses into a city’s drinking supply.

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Rainwater harvesting is the process of collecting and storing rainwater for various purposes, such as irrigation, household use, and groundwater recharge.