The Grundfos Series CV Combination Valve combines three valves in one: shut-off valve, balancing valve, and check valve. The combination valve makes it possible to reduce the overall system pressure drop since fewer individual components are needed when installing a pump. Combines 3-Valves in One-Shut-Off Valve, Balancing Valve, and Check Valve. Provides the Feature of Changing the Flange Orientation to Allow 90 Degree Pipe Connection. Reduces the Overall System Pressure Drop Since Fewer Individual Components are Needed When Installing a Pump. Simplifies Dismantling and Servicing. Internal Parts Such as the Disc can be Easily Removed and/or Replaced. Contains a Built-In Bypass Valve Allowing for Drainage of Water Upstream of the Check Valve.