YOU GUESS IT??
Valve on an Underground Sprinkler System
Many urban and rural homeowners have automated underground lawn sprinkler systems. Spending an hour or so to winterize your system in the fall can time and money next spring.
The most important action you can take in the fall is to drain the system so you don’t get ice damage to the pipes and valves.
Learn how to get your system ready for winter by reading:
Don't Forget to Winterize Your Underground Sprinkler System (.pdf)
Conserve Water with Proper Irrigation (.pdf)