Blowing Out Sprinkler System Toronto

First, you need to turn off the main water supply to the sprinkler system. This is usually done at the main shutoff valve located in a basement or utility room.

An air compressor is used to blow out the water from the sprinkler lines. Ensure it is properly sized for your system and has the necessary attachments.

blowout sprinkler system toronto

Connect the air compressor to the system using an appropriate air hose and adapter. This connection is typically made at the backflow preventer or the irrigation system’s mainline.

Open the manual drain valves and all the automatic drain valves in your sprinkler system. These valves are located at the low points of the system and help gravity-drain water from the pipes.

Turn on the air compressor and gradually increase the pressure. The compressed air will push the water out of the sprinkler pipes and heads. Start with the zone farthest from the compressor and work your way back to it.

Keep an eye on the pressure gauge of the air compressor to ensure it remains within the safe range for your system. Excessive pressure can damage the pipes.

Continue blowing out each zone until no water comes out of the sprinkler heads and the pressure remains stable.

Turn off the air compressor and disconnect it from the system.

Close the manual and automatic drain valves to prevent debris from entering the system.