WE ARE Douglass

Manufacturing sight glass equipment for tanks and general industrial process vision​

DOUGLASS flow sight glasses with 360°

Sight Flow Indicators

Level Gauge Glass

Sight Windows

Custom Applications

Spare parts


Our products are designed and manufactured under strict quality control procedures.

Douglass is a brand dedicated to the manufacture of 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. 

We use our own designs and proprietary technology to deliver solutions that meet and exceed the highest quality standards. Douglass brand offers 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.

DOUGLASS image about us industrial sight glass

We work Custom Projects

Our commitment to our clients is to provide them with the best service.

Elevate your tanks. Our products are crafted with the highest development standards to ensure reliability and performance​

Concept and design

For each project, the work situation and technical specifications are analyzed, and you will be advised on the best selection for your team’s level and flow.

Spare parts and maintenance

We provide certified spare parts for Iniflu equipment. If you don’t have an Iniflu equipment, we can most likely help you since most of these equipments are manufactured according to international standards.

Measurement and calibration

With our technology we offer measurement and calibration services for Iniflu equipment and thus provide you with solutions for any level and flow measurement challenge.

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