Check Key Tool | #2 Cam Check | 6 in.


No reviews yet Write a Review
Backflow Check Key | 6" | Tool #2
Backflow Check Key | 6" | Tool #2 - Back
Backflow Check Key | 6" | Tool #2 - Top
Backflow Check Key | 6" | Tool #2 - Bottom

  • Buy 4 - 23 and get 3% off
  • Buy 24 or above and get 10% off

Frequently Bought Together:

Backflow Check Key | 6" | Tool #2
Inc. Tax
Ex. Tax


The Large Backflow Check Key Tool is designed to quickly remove the #2 cam check used in Ames and Watts double check valves that measure at 6 in.,without destroying the valve, your tools, or your hands.

There are two cam checks (commonly referred to as check valves) located inside of your backflow preventer assembly. Together, they regulate the flow and pressure of the water that moves through plumbing and piping systems.

This product is uniquely designed with extended legs designed to rotate the #2 cam check with a 1/2 in. drive ratchet or breaker bar (not included). This Check Key Tool works with both reduced pressure zone (RPZ) and double check backflow preventers.

How do Backflow Check Key Tools work?

While manufacturers sometimes recommend using a screwdriver to remove or replace cam checks, this technique can be dangerous and may not work every time. In fact, if the check valve is installed correctly, the force needed to remove the assembly may break some tools (or even the cam check itself).

This particular backflow tool slides directly into the grooves of various Ames and Watts backflow preventers (6 in. sizes), providing the necessary leverage to safely remove and replace the #2 cam check.

Will this Check Key Tool fit my backflow cam check valve?

This single check valve tool is compatible with the #2 cam checks in 6 in. backflow preventers, and works with both reduced pressure zone (RPZ) and double check backflow types.

Compatible Ames-brand backflow preventers with the Backflow Check Key Tool include the following:

  • Ames Series 2000SS (6 in.)
  • Ames Series 3000SS (6 in.)
  • Ames Series 4000SS (6 in.)
  • Ames Series 5000SS (6 in.)

Compatible Watts-brand backflow preventers with the Backflow Check Key Tool include the following:

  • Watts Series 774 (6 in.)
  • Watts Series 774DCDA (6 in.)
  • Watts Series 994 (6 in.)
  • Watts Series 994RPDA (6 in.)

How is this Backflow Check Key Tool designed?

This single Check Key Tool is ideal for individuals or technicians who work regularly with a specific model of larger backflow preventers. With a simple crosshair design, solid steel, and a bright blue finish, this Backflow Check Key Tool works in conjunction with a 1/2 in. drive ratchet or breaker bar (not included) to turn the check valve in the body, facilitating replacement or removal of the cam check with ease and precision.

How do I use the Check Key Tool?

Operation of the Backflow Check Key is simple and consistent across all compatible double check valve backflow preventers.

First, locate the cam check inside of the backflow check valve. Then, line the Check Key tool up with the cam check and rotate the tool until the legs align with and slide into the slots found in the perimeter of the cam check. Slight pressure may be required for the check key to snap into place.

After securing the tool inside the slots, attach a 1/2 in. ratchet or breaker bar, and begin to rotate the Check Key tool. If the cam check won't budge, wedge a small piece of wood in the opening between the tool and the valve. Wedges can provide extra torque by pressing the tool tightly against the check valve while keeping hands out of harm's way.

When installing a new backflow check valve, consumers have found that lubricating the O-ring can help increase the ease of the process tremendously. Always follow the manufacturer's guidelines and applicable laws when lubricating valves connected to potable water systems. Many Ames- and Watts-brand valves should be thoroughly cleaned and lubricated with Food and Drug Administration (FDA) approved lubricant.


Check Key


No reviews yet