国产高清AV日韩高清AV_亚洲日韩中文激情中出_国产一级片在线观看_A级毛片免费高清毛片视频就_久久国内日韩精品123_91精品 在线 国产_丁香六月纪婷婷激情综合_中文字幕无码中文…_1风流少妇中文字幕_高清无码在线看网站

CN EN
QQ
+86-(0)15021555579
qrCode

NEWS



Location:News >> 技術(shù)知識

Method of judging internal leakage of natural gas ball valve

Release time:2025/1/3

Fixed shaft ball valve is commonly used on natural gas pipelines, and its general inspection method is: turn the valve to the fully open or fully closed position, and check whether there is leakage through the discharge of the valve body drain nozzle. If it can be drained clean, it proves that the seal is good. If there is always pressure discharge, the valve can be considered to be leaking, and the valve should be treated accordingly.