"F" Series - resists sub slab ventilation
The “F-Series” Dranjer™ products are designed to be used in homes where sub-slab ventilation has been included as a radon mitigation technique. These valves will not open at less than 1.25” of negative pressure yet allow for water flow.
F-S2 is a sump model designed to fit into your sump cover.
- The F-S2 allows water to flow across the basement floor into the sump but prevents soil gases from entering the home
- Designed to attach to the bottom of a sump lid. Cut a hole in the sump lid. Attach to the bottom the lid with the nuts and bolts provided with the product and caulk.
Download the Installation Instructions
F-R2 - drain retrofit small
F-N2 - new installation drain - small