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Attach an air compressor line to the main water supply line or junction point and open or remove all of the sprinkler heads. Then blow air through the lines until all of the water comes out and replace the heads. You can also put a small amount of Plumbing antifreeze in the lowest point in the system to prevent any residual water from collecting and bursting the pipes.

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Annamarie Trantow

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2y ago
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11y ago

To de-winterize a sprinkler system, flush out the antifreeze or similar substance. It will be necessary to manually prime the pump by adding water and finally bleed the system of any air.

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Q: How do you de-winterize the sprinkler system?
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