"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-N2 is a complete floor drain designed for new construction

  • This valve ships with a housing that fits to standard 2” pipe and an anchor flange to set in poured concrete 

Download Installation Instructions

F-R2 - drain retrofit small
F-S2 - sump model