Preparing Your Sprinkler System for Winter

We had our first light frost in the metro area.  That means it's time.  Time to prepare your sprinkler system for winter:

Quick Facts....

• Prepare your sprinkler system for winter by expelling all the water from the irrigation system and equipment.
• Do not trust manual or automatic drain valves. The system should be blown
  out with pressurized air.
• To determine the best sized compressor for your system, know the gallons
  per minute (GPM) that flow through each zone.
• If your irrigation system is attached to domestic water, it is required to
  have a backflow prevention device.

Read the rest here!