◇ Overview and Features SL-type shows flow of traffic was observed, which can be observed through the window level of the circulation of the liquid in the pipeline. Widely used in the tank, bearing cooling water on-off observation station. The flow is shown by the shutter, the housing and the show mirrors, with the size of the flow baffle is pushed corresponding angle for the operating personnel observe the line of flow state. ◇ main technical parameters 1) Working pressure ≤0.6MPa; 2) Nominal Diameter: 25,50,80,100,150 mm; 3) product level upwards should be installed in horizontal pipelines. Model Dg D1 D2 nd L SL-25 25 75 100 4-Φ14 200 SL-50 50 110 140 4-Φ14 200 SL-65 65 SL-80 80 150 185 4-Φ18 200 SL-100 100 170 205 4-Φ18 300 SL-150 150 240 280 4-Φ22 340