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Your cart is empty.With the HI-PERDRAIN RF Retrofit Kit, retrofitting a sump cover drain is a snap. Using a hole saw (RadonAway's P/N 28282-32), cut a 3.5" hole in the cover, drop in the adapter and seal in place. HI-PERDRAIN ST drain is included.
SparkyPeoIl.
Reviewed in the United States on March 26, 2025
Device employs a hollow plastic ball for a valve against the seal. As water enters its chamber the plastic ball floats and the water drains. If you have negative pressure in your sump because of a radon fan it overcomes this process with its pull against the plastic ball and doesn't allow water to drain.
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