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Dry system with K=4.2

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gtfire

gtfire

Mechanical
Joined
Feb 17, 2010
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10
Location
CA
NFPA 13 2007 SEC 8.3.4.3 Makes reference to galvanized piping on dry systems when using k=4.2 spkr heads. Does galvanized piping mean just the pipe or the pipe and fittings
 
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