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Old 10-14-2012, 02:07 AM
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cjohn2000 cjohn2000 is offline
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Join Date: Jun 2010
Location: Tacoma, WA
Posts: 464
On one of our older complexs that has the old 2" doublechecks with needle valve testcocks and gate type isolation valves, we blow out through #4 testcock and on that one you can see that there is some air restriction going through such a small opening.
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