Large Drain Retrofit Valve
The Dranjer JR15 fits into existing floor drains that are between 6.25 and 11 inches in diameter. It is a one-way valve that allows water to flow into the drain but prevents radon gas, soil gas, insects, and odors from entering your living environment.
Install the Dranjer JR15 by removing the existing strainer plate. Hold the JR15 under the strainer plate by the flexible rubber flange. Place the strainer plate / JR15 combination back into the drain’s retaining ring. The JR15 is held in place by pinching the flexible flange between the strainer plate and the retaining ring.
Testing shows that often sealing the floor drain by itself reduces Radon levels to government standards. Install a Dranjer as your first step in reducing Radon. Then test. If you have to incur the additional expense of installing Active Subslab Depressurization, (ASD), the Dranjer will support that system. For smaller drains, the DR2 valve fits drains as small as 2 inches.
|Below Grade Depth||5.125||13.0175|
|O.D of Centering Ring||2||5.08|