Obround Sight Glass Fitting

The Obround Sight Glass Fitting delivers a streamlined, low-profile observation window designed for direct welding into or onto vessel walls. Its clean-line construction with counter-sunk bolts ensures a hygienic, easy-to-clean installation suitable for tanks, pressure vessels, silos, stirred vessels, and pipelines.

Each unit is supplied as a complete assembly—including a fully gasketed glass plate, seals, and bolting. High-pressure versions are available for demanding applications up to 25 bar, with thermal performance reaching 243°C when equipped with borosilicate glass.

Key Features

• Low-profile, clean-line design with counter-sunk bolts
• For welding into or onto vessel walls
• Radiused base flange option available for curved vessels
• Supplied complete with fully gasketed glass plate and bolting
• High-pressure capability up to 25 bar (size-dependent)
• Operating temperature up to 243°C with borosilicate glass
• Suitable for continuous or intermittent process observation
• Ideal for hygienic environments requiring smooth contours and easy cleaning

Specifications

• Viewing Length: Up to 725 mm
• Viewing Width: Up to 50 mm
• Operating Pressure: Up to 25 bar
• Operating Temperature: Up to 243°C (borosilicate)
• Materials: Stainless steel, carbon steel, Hastelloy

The Obround Sight Glass Fitting is engineered for demanding industrial visibility applications, delivering a rugged, sanitary, and space-efficient solution suited to modern process environments.

Technical Specifications: