Papailias Incorporated manufactures sight glasses and sight glass accessories for process observation and control field applications, and continually provides new and innovative products to solve the most difficult problems facing process engineers. Papailias’ complete line of high quality basic sight glasses, light/sight glasses, sight glass accessories, lighting for sight glasses, sight flow indicators, liquid level gauges, fused sight glasses, and glass products provide high levels of product monitoring capabilities. Papailias has traditionally developed specialized products to meet specific customer needs. Since 1976, our products have satisfied the need to monitor the contents of a pipeline, as well as the necessity for more precise level control. Papailias is the most trusted name in the sight glass industry for the people who use process observation products day in and day out.