3/4" Watts 007 Double Check Backflow Device
3/4" Watts 009 Reduced Pressure Principle Backflow Device
3/4" or 1" Hersey FRPII Reduced Pressure Principle Backflow Device
1" Watts 009 Reduced Pressure Principle Backflow Device
1" Watts 007 Double Check Valve Backflow Device
3/4" or 1" Watts 009 Reduced Pressure Principle Backflow Device (with 3/4 " domestic Tee Assembly) (normally used)
1½" or 2" Watts 909 Reduced Pressure Principle Backflow Device
1½" or 2" Watts 009 Reduced Pressure Principle Backflow Device
1½" or 2" Watts 007 Double Check Backflow Device
1½" or 2" Watts 009 Reduced Pressure Principle Device (with 34" domestic tee assembly) (normally used)
3" Watts 909 Reduced Pressure Principle Backflow Device
3" Watts 909 Reduced Pressure Principle Backflow Device (with 3/4" domestic tee assembly)
3" Watts 709 Double Check Backflow Device