Sentinel Drain Guard Sewage Backflow Preventer 3 in. and 4 in. Backwater Valve - Holmes Approved

The Sentinel Drain Guard is a backwater prevention valve that is inexpensive and easy to install in just 1-step. Installed in your basement floor drain, it guards against sewage backflow entering your house. Using patented technology, the Sentinel has several auxiliary features to prevent failure in the case of backflow. Designed in Canada, CSA certified and the only sewer backwater valve on the market approved by Mike Holmes and the Holmes Group through their Make It Right initiative, the Sentinel drain guard is something every urban homeowner with a basement should have.