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Close off the number one shutoff and what we're going to do is i'm going to open up the number three Garrett Yates of Backflow Management Inc demonstrates the USC 10th edition backflow Hi everybody darren here we're at the camosun pipe trades cross connection lab again and we're Visit to view the full video and purchase access to our other Commercial Facilities Maintenance courses. Hi I'm Mark Titus I'm the owner operator of All-American backf prevention today I'm going to demonstrate how to
