Installing Irrigation Valve DrainsOkay, it’s time to put our drains in. Each year, most people want to put some sort of winterizing drain so that they don’t leave their system water filled over the winter. In this particular case, we’re going to put in some automatic drain. There’s pluses and negativities to automatic drains versus manual drains, but we’re going to let ours drain automatically.
So, I’m going to cut each valve after the valve. I’m going to cut the line and I’m going to put in a 1 inch to a ½ inch, female T. Of course, just like any other PVC fitting, you just want to clean your pipe real good and then glue it well. So that’s a 1 inch to a ½ inch female, because that is what our automatic drains fit into. You can get these at any Lowe’s or irrigation supply places, just a pressure drain that close off when the system is pressurized and they release when the system releases its pressure and they allow the system to drain.
So you just stick one of these ...