Is there a recommended maximum distance between the Fire Department Connection (FDC) and check valve?
NFPA 13 does not include a required maximum distance between the check valve and the FDC. I understand the intent is to reduce the length of non-pressurized pipe. My project includes a warehouse with a free-standing FDC located about 125-feet from the building.
Is it best to locate the check valve indoors, where it can be easily inspected and maintained, or, located underground, closer to the FDC where it would be buried?
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