PO 4500082924 Installation of 2 new test ports on domestic water backflow. Water will need to be turned off while work is being done. PO 4500082924 Rebuilding of a 4 inch Ames 2000SS Backflow Preventer. This includes replacement of the 1st and 2nd checks as well as cleaning of the inside of the backflow. Re-testing of unit once work is completed. For fire sprinkler backflows, the fire alarm must be called out / placed in test or on hold prior to work starting. Repaired 4 inch fire sprinkler backflow and tested. Installed 2 new test ports on domestic water backflow. Location: fire sprinkler room Use: fire Type: DC Make: Ames Model: 2000SS Size: 4 inch Serial number: 19506 1st check: 4.0 2nd check: 3.5 Water pressure: 55 PASS