For this job we will be inspecting the system for major leaks or issues before shutting the system down for the winter. After inspecting I found a couple heads sticking but other than that no major issues. This customer has a RPZ so we will be turning the water off completely from the isolation valve. I also opened the test cocks and blew air to get as much water out as possible. I’m also running each zone valve for 4 minutes to drain out as much water in the mainline as possible. The test cocks on the rpz will remain open until we return in the spring.