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Where is your One-Way valve located?

Posted by TomR on May 30th, 2000 01:49 PM
In reply to sealed sump pit + radon evac=syphon back to pit? by Dave on May 29th, 2000 10:41 PM [Go to top of thread]

Is it close to the pump, or close to the top of your 9.5' vertical run?

It should be as close to the pump as possible, and would probably work best if the one-way is vertical, unless the one-way is spring-closed.

All the water between the one-way and the pump will drain back down into the sump, so the further the one-way is from the pump, the more water ends up back in the sump.

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