Re: ball valve half-open to avoid winter freezing?

Mr McCoy:

this is the approach we use in Arizona with good results.

At 10:21 PM 10/14/2007, you wrote:

>I'd appreciate if someone can give a quick answer to this quick question:
>
>Say it's impractical for some reason to drain a part of a water system
>-- instead, water is left running to reduce the risk of freezing (this
>system is located in a climate where daytime winter temperatures are
>usually above freezing and nighttime temperatures are sometimes a few
>degrees below freezing). The pipes are HDPE, so an occasional freeze
>shouldn't be a problem. As for the ball valves: would it reduce the
>risk of valve cracking if I leave the ball valves half-open?
>
>Thanks
>
>
>
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Thomas G Laupa PE
Senior Engineer - Nalco Company
Office Address: 1601 Diehl Road, Naperville, IL, 60563 Courier Address: 1003 Remington, Fort Collins, CO, 80524

970-227-5127
800-493-5009 fax
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[Non-text portions of this message have been removed] Received on Mon Oct 15 10:44:00 2007