Air supply piping from and air compressor. I see that some air compressors are connected with stainless steel braided hose. Does this hose have to be listed for fire protection use? I can’t seem to locate any relevant information in NFPA 13.
Would be very interested to know this as well as I am dealing with a case now where the airline failed, the system was set off, and the backwater valve on the air line also failed to cause a huge flood.
The latest edition of NFPA 13 states that the connection from the air compressor to the dry pipe must be either recommended by the manufacturer or acceptable by the AHJ. See section A.18.104.22.168.1.
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