Does the drain piping have to conform to NFPA 13-6.3 after the drain valve?
I have a system where we have connected to the drain provided by the plumbers, but they provided ABS pipe. Now the Fire Marshal is citing these drains as deficiencies. Jerry Van Kolken Millennium Fire Protection Corp. 2950 San Luis Rey Rd. Oceanside, CA 92058 (760) 722-2722 FX 722-2730
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