Profile: Papailias Incorporated manufactures sight glasses, and sight glass accessories for the process observation and control fields. We provide a complete line of basic sight glasses, sight flow indicators, liquid level gauges, and lighting fixtures. We serve the industries such as chemical, pharmaceutical, cosmetics, food/dairy, waste water treatment, and power generation industries. Our products include sight glasses, light/sight glasses, sight glass accessories, lighting for sight glasses and other glass products. Our liquid level gauges are designed for use with Corning standard, high-pressure, red line or heavy wall brand tubing. The UL-1571 listed series PL lighting units are mounted on the upper flange of our circular sight glasses.