use tee connectors for pipes running off main line
level sprinkler heads with soil level
attach risers using 90 degree connectors
apply adhesive thinly and smoothly to glue section
Flush System, Add Sprinkler Heads
Before adding sprinkler heads, flush water through system to clean out any debris. Tap into the waterline. Attach fitting into the saddle (two types of fittings, your choice) and one into the sprinkler head. Be sure to use a smaller, more flexible piping (Image 1) to go from the main pipe up to the sprinkler head. This type of piping is more manageable and will curve easily. Fill in with some dirt. Level the sprinkler head with level of sod (Image 2). Fill in rest of the dirt and sod.
Suggestion: If you would like to be able to have your water sprinklers turn off automatically when it's raining, install a wireless rain sensor (Image 4), which has a stack of hydroscopic disks that expand when they get wet, tripping a switch and shutting down the sprinkler system. As the disks dry off, they contract and restore the irrigation sprinkler system. Attach the wireless rain-sensor model to the gutter.
To maintain an even water-application rate, it's critical to nozzle the heads accordingly. For example, if you have an 180-degree rotary head and a 90-degree head in the same zone, you'll need to be sure to put twice the nozzle on the 180-degree head as you do the 90-degree head. If you're at the end of a pipe run and need to install a sprinkler head, here's what you can do: Take a 90-degree barbed elbow fitting and press it into the pipe, then take a riser fitting and screw it into the pipe and attach the sprinkler head to it (Image 3).