We obtained a european patent for our radon sump back in 1995 and have changed the design from concrete to polypropylene since then.
The Radvac Radon Sump is designed either for new build projects or existing buildings where the radon levels are extremely high and/or the building is larger than average. The Radvac Radon Sump will achieve a draw of up to 15m on the radius. Multiple Radvac Radon Sumps can be manifolded together in the pipework to achieve substantial reductions in the radon levels.
You can also connect up to three Radvac Radon Mini Sumps to each radon sump to achieve the best radon reduction results as possible.