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Supreme Member

Posts: 5,245

Location: Metro NYC


Tuesday, September 20th 2005, 6:19am

As far as having the zone valves close to the heads they feed, it is both a savings of material, and, more importantly, protection for the control wire, from cold weather contraction, that leads to spreading out the valves. Ideally, you want a maximum of a hundred feet of burial for a control wire, with each end laying slack in a valve box.

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