This Complete Backflow Check Key Set includes four tools designed to quickly remove cam checks used in Ames and Watts double check valves,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 #1 and #2 cam checks with a 1/2 in. drive ratchet or breaker bar (not included). These Check Key tools work with both reduced pressure zone (RPZ) and double check backflow preventers from 2 1/2 in. to 6 in. in size.
How do backflow Check Keys 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).
The backflow tools included in this Check Key kit slide directly into the grooves of various Ames and Watts backflow preventers (including 2 1/2 in., 3 in., 4 in., and 6 in. sizes), providing the necessary leverage to safely remove and replace both #1 and #2 cam checks.
Will these Check Key tools fit my backflow cam check valve?
These Check Key tools work with both reduced pressure zone (RPZ) and double check backflow preventers.
Compatible Ames-brand backflow preventers with the Backflow Check Key Tool Set include the following:
- Ames Series 2000SS (2 1/2 to 6 in.)
- Ames Series 3000SS (2 1/2 to 6 in.)
- Ames Series 4000SS (2 1/2 to 6 in.)
- Ames Series 5000SS (2 1/2 to 6 in.)
Compatible Watts-brand backflow preventers with the Backflow Check Key Tool Set include the following:
- Watts Series 774 (2 1/2 to 6 in.)
- Watts Series 774DCDA (2 1/2 to 6 in.)
- Watts Series 994 (2 1/2 to in.)
- Watts Series 994RPDA (2 1/2 to 6 in.)
How are these backflow Check Keys designed?
This complete set is ideal for technicians who work regularly with a variety of backflow check valves. With a simple crosshair design, solid steel, and a bright blue finish, these Backflow Check Key tools work 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.
This Backflow Check Key Tool Kit includes all four of the following keys (also sold individually):
- Small #1: Fits 2 1/2 in., 3 in., and 4 in. #1 Cam Check Valves
- Small #2: Fits 2 1/2 in., 3 in., and 4 in. #2 Cam Check Valves
- Large #1: Fits 6 in. #1 Cam Check Valves
- Large #2: Fits 6 in. #2 Cam Check Valves
How do I use these Check Key tools?
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.