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Winterize a lawn sprinkler system 3
Do it yourself video on winterizing a lawn sprinkler system through a port in an above ground backflow preventer.
In this video I shut down and air out my lawn sprinkler system via a port in an above ground RP backflow preventer. The compressor used is a Craftsman 20 gallon compressor that delivers 5 SCFM @ 40psi. Parts used in video are annotated.
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