L.J. Star Sightflow IndicatorL.J. Star’s Standard Visual Flow Indicator allows for an easy, detailed observation of processes in harsh fluid applications characterized by high pressure, high temperatures, and high corrosion. Designed to enhance safety and simplify maintenance, this flow indicator has two opposing sight ports allowing an operator to view the intervening flow of fluid lighted from behind by ambient light or a mounted light source. The flow indicator is available in a variety of sizes, ranging from ½ inch to 12 inches, and is full-ANSI rated. All are available with indicators such as rotors, flappers and drip tubes. The sightglass is made from tempered borosilicate glass, a material that wears very well under pressure, caustics and high temperature. This product may be requested in stainless, carbon or Teflon-lined, and includes independently bolted glass retainers. The flow indicator enables the observation of the direction and rate of flow of liquid, powder or gas through pipelines. It also allows operators to observe the color and clarity of process fluids through the viewing window. – ljstar.com