Cv Required for Freeze Protection of Uninsulated Water Lines

Download Application Profile #3 - Approximate Cv Required for Freeze Protection of Uninsulated Water Line

In a “Resupply System”, a pressurized source replaces water. Freeze protection is provided by removing the colder water from the system, and allowing warmer resupply water to modulate the valve closed. Larger valves will not waste water, and it is impossible to oversize. The rate at which water must be removed can be calculated as follows:

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