used forliquid discharge,backflow or coolingwater pipeline to observe the flowing conditions ofliquid........ body material;cabon steel,stainless steel,rubber lining,fluorine lining,304and 316etc.range of nominal pressure;PN≤2.5MPaworking temperature;below 200kfor metal,and permissible shocking temperature 150krange of nominal diameter between 15~ 200m.........used forliquid discharge,backflow or ...