Sight flow indicators provide a quick, reliable and economical way to verify the flow of fluids through industrial process lines.  Fluid clarity, color, and flow can be monitored through the window.  The indicator type is specified based upon flow direction, flow rate, and media type. The window can be inserted horizontally or vertically.  Sight flow indicators usually consist of a small housing with a flange or thread for direct insertion into a pipe. Dimensions of the sight window and/or complete housing can be specified.  Wipers may be included to clean the viewing area or internal parts with high viscous fluids and/or suspended solids.