The EVR "SERIES CPI" In-Line Check Valves are designed to fit right inside the pipe. No valve body is required. These valves require no external power source or mechanical components to operate, unlike conventional Check Valves.
This feature not only saves money but also permits installation in otherwise difficult situations such as tank outlets, floor drains, and sewer interceptors; overflow systems, retention basins and manhole outlets.
This flexible valve prevents flow from occurring in the reverse direction. It will eliminate costly backflow from oceans, rivers, or storm water and is the ideal valve for effluent diffuser systems.
SERIES CPI also fits directly inside the pipe and is bolted in place between the pipe flanges.
Note: SERIES CPI valves have increased pressure drop because the valve must be smaller to fit inside the pipe. Actual maximum flow area is less than 25% of nominal pipe area.