Dranjer JS15 Radon Reduction Floor Drain Sump Seal

Dranjer JS15 Floor Drain Sump Seal

The JS15 Drain Sump Valve is designed to integrate seamlessly into your sump cover, providing an effective barrier against radon gas, soil gas, insects, and odors while allowing water to flow into the drain sump.

Easy Installation

Cut a 2-inch hole in your sump cover.
Secure the JS15 by bolting it to the underside of the cover using the built-in alignment collar.
Once installed, the JS15 becomes a permanent part of your sump cover, ensuring long-term protection.

Optimized for Radon Mitigation

Works with Active Subslab Depressurization (ASD) systems commonly used in residential radon mitigation.
The valve remains closed until static pressure exceeds 0.75 inches of water column (185 Pa), preventing unwanted air movement.
Most ASD systems connected to sump pits or weeping tiles operate below this threshold, meaning the JS15 won’t interfere with their effectiveness.
If suction pressure exceeds this level, minor airflow may occur, but this typically has no significant impact on ASD system performance.

Alternative Option

For higher suction resistance, consider the FS2 valve. However, the JS15 offers a more budget-friendly solution while allowing greater airflow when needed.

How Your Dranjer J Series Works

J Series have a ball valve that floats – allowing for high flows through the unit.

When the flow stops the valve closes and radon gas can no longer flow up through the floor drain or sump cover. Effectively reducing radon levels in the dwelling.

Dranjer products are engineered and laboratory and field tested. Dranjer products are DIY friendly. Dranjers are often installed association with an ASD system but may be the only action you need to reduce your radon levels.