http://www.LandscapingUniversity.com Installing Flex Pipe and Cleaning out System Okay, when installing flex pipe, you can see that I have an orange flag there to my right and that's where the head is actually going to be. So I want to go up a couple of feet from that head and cut my PVC so that I’ll have a little bit of area to work with when I do have my flex pipe installed. So I can move it and adjust the head. Always clean your pipe and your fittings and glue liberally. Now, in the case, we're using a one-inch tee that goes to a half-inch threaded. Some fittings are going to use three-quarter inch threaded. Once you get that glued in, then you're going to decide which fitting you need for the flex pipe. These are barbed fittings. They're one-half inch barbed to either a half-inch or a three-quarter inch threaded male. I want to use a barbed in this particular case. And screw that in and just hand-tighten. And once you get that tight, you're going to take your flex pipe and press it onto the barb. And that usually fits in very securely. Now, once you have your flex pipe attached, you want to come out, maybe give yourself a little bit of extra flex pipe on the end, where the actual head will be placed. And then just leave that open. We're just showing you a different example here. This is an end-head on a corner, so we don’t have a tee. We just have a one-inch adaptor to a three-quarter inch female. We're using a straight, barbed adaptor to the flex hose and just cut it off a couple of inches long. And then you'll be ready to clean your system. Okay, now we're ready to clean out our system before we put our heads on. So we want to make a quarter-turn manually to our valves, which will open up our system. And we want to do this one zone at a time. And then you just allow that funny pipe to blow out for a few minutes. And then we lay our heads down next to each one of our flags that we've got marked on where out funny pipe is.