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www.irritrol.com/sprays_ipro.aspx
This is a brief video on how to install a check valve to prevent unnecessary water waste. If you have any questions please feel free to call us toll-free at 1-800-634-TURF (8873) Monday through Friday from 7:30AM to 4:00 PM (PST)
www.irritrol.com/sprays_ipro.aspx