Preaction Sprinkler System
A Preaction System is a sprinkler system employing closed automatic sprinklers connected to a piping system that contains air or nitrogen that may or may not be pressurized. A supplemental detection system (release line) is installed in the same area as the sprinklers.
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◰ 𝐃𝐞𝐬𝐢𝐠𝐧 𝐀𝐫𝐞𝐚– 𝐏𝐚𝐫𝐭 𝟏: 𝐁𝐚𝐬𝐢𝐜 𝐂𝐨𝐧𝐜𝐞𝐩𝐭𝐬 (𝐍𝐅𝐏𝐀 𝟏𝟑)
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