An effective and simple fix for rainwater back ups into your basement. Let it RAIN!
Many homes throughout the U.S. but in the 50's had the problem. My homes were late 1800's and one built in the year 2000 (shown in the video)

The product discussed here is Flood-Guard and you can find a distributor at http://drainbrain.com. I work with Ferguson Supply in Allentown, PA from their list.
Flood-Guard is available in other diameter sizes as well.