For water - 175 PSI maximum pressure - 150 degrees maximum water temperature - Combines three 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. (The bypass valve MUST BE CLOSED at all times in normal operation and should ONLY be used by authorized personnel to drain water from the piping above.)