I would like to know, In an Automatic Sprinkler System, is it required to conduct hydro-static or any pressure testing for Test & Drain (2" Main Lines)?
Could anyone please explain this and based on which NFPA standard?
All normally pressurized sprinkler system piping must have a hydrostatic test performed. Drain lines that are normally not pressurized do not require pressure testing. See NFPA 13 chapter 28.
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