The valves are key to the irrigation process, acting as the floodgate between your water source and your sprinkler system.  Valves are opened and closed by the electrical voltage regulated by your controller. 

For irrigation mainline, we use NSF Poly.  NSF is constructed out of "virgin" poly and warranted for 25 years.  It also has the highest safety rating for piping from the National Safety Foundation.  Many irrigation companies use NON-NSF poly because of the cost.  NON-NSF poly is recycled poly, highly capable of cracking and splitting under weathered conditions.

We use Rainbird ESP-LX+ and LXi+ Series Irrigation Controllers for our residential installations.  The advantages and application uses for these controllers is endless.  Four independent timing watering cycles, testing manipulation programs, event off days, and individual station timing options are just a few of the advantages you will get with these Rainbird Controllers.  Also, these controllers handle 6, 8, 12, 16, 20, and even 24 irrigation stations to handle the smallest to the largest sprinkler system.