Standard for Installation of Fire Safety Devices based on Use and Occupancy Article 56
Check valve at the end of the automatic sprinkler system with enclosed type nozzle shall be equipped pursuant to the following provisions:1.Pipe diameter shall be more than 25mm.2.Check valve shall be equipped according to the piping system of each water flow detecting device, and connected to the end of the farthest branch pipe with the lowest discharge pressure on each floor of the building.3.The primary side of check valve shall be equipped with pressure gauge, and the secondary side with metering hole having the same discharge performance as nozzle.4.The height from the floor shall be less than 2.1m, and discharge pipe shall be attached; and “End Check Valve” shall be marked obviously.
中文原文 各類場所消防安全設備設置標準第56條
使用密閉式撒水頭之自動撒水設備末端之查驗閥，依下列規定配置：
一、管徑在二十五毫米以上。
二、查驗閥依各流水檢知裝置配管系統配置，並接裝在建築物各層放水壓力最低之最遠支管末端。
三、查驗閥之一次側設壓力表，二次側設有與撒水頭同等放水性能之限流孔。
四、距離地板面之高度在二點一公尺以下，並附有排水管裝置，並標明末端查驗閥字樣。
一、管徑在二十五毫米以上。
二、查驗閥依各流水檢知裝置配管系統配置，並接裝在建築物各層放水壓力最低之最遠支管末端。
三、查驗閥之一次側設壓力表，二次側設有與撒水頭同等放水性能之限流孔。
四、距離地板面之高度在二點一公尺以下，並附有排水管裝置，並標明末端查驗閥字樣。