久久深夜视频,操碰视频在线观看,午夜三级a三级三点在线观看,天堂无码,亚洲产在线精品第一站不卡,久久久久久精品免费无码无,亚洲A∨无码精品午夜电影,日本少妇爽妇网,国产一区二区三区在线无码,国产成人精品视频一区二区三

Y-type strainer, is the use of hydraulic control valves and precision mechanical products easily blocked by the necessary filtration equipment.Usually installed in the hydraulic control valve and other equipment at the entrance, to prevent granular impurities into the channel, causing blockage, so that the valve or other equipment failure and can not be used normally.The Y-type filter has simple structure and small flow resistance, which can remove the dirt on line without dismantling.