Douglass is a brand dedicated to the manufacture of sight glass equipment for the observation of industrial processes. Our main focus includes observing the level inside a tank, the fluid in a flow line, and the processes inside vessels.

We have more than 30 years of experience. Our products are designed and manufactured under strict quality control procedures. We use our own designs and proprietary technology to deliver sight glass solutions that meet and exceed the highest quality standards.

Douglass brand offers sight glass solutions for fluid observation in various industries. From boilers and steam to oil and gas, distilleries, and breweries. Our products are designed to meet the unique needs of various industries, ensuring unparalleled performance and reliability.