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Monday, July 21st 2008, 11:32am

Hunter I-20 with Check Valve & Automatic Drains

I do not blow out my lines to winterize them. I have automatic drains. I am looking to replace my rotor heads with Stainless Steel I-20's. Will the check valve in the sprinkler heads prevent my system from properly draining when I shut off the water, and open the drain in the basement for the winter?


Supreme Member

Posts: 5,323

Location: Metro NYC


Monday, July 21st 2008, 4:42pm

The !-20 heads will not drain.

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