How to Disconnect Irrigation

Cut the power to the control box for the irrigation system from the circuit breaker, and then turn off the water supply to the system to avoid electrical shock or flooding. The water flow is generally controlled with a valve, and can be shut off by turning the valve to the off position.

Open the drain valves throughout the system to drain any water remaining in the irrigation system. Turn any manual drain valves to their open opposition fully, or activate one of the irrigation stations to lower the pressure in the pipes enough to open any automatic drain valves.

Remove the backflow preventer and drain it as well. Use a shop vacuum with an attached hose to pump out any of the irrigation system’s risers.

Pull up the sprinklers to drain the water from the sprinkler bodies, if the sprinklers contain check valves.

Wait for the water to stop draining from the system. Return to the shutoff valve area and open the boiler drain valve, or the cap on the stop and waste valve to drain any remaining water from the system.