Improve Process Visibility with Sanitary Sight Glasses

Sight glass, acrylic spools, or viewing glass – whatever term you prefer – the value of seeing inside your process system without downtime is invaluable.

We offer standard sizes in stock and custom sizes are available, keeping it simple. Acrylic Sight Tubes can be a pivotal addition to your process line. Here’s why:

• Sight glasses are designed and engineered to withstand certain materials and fluids so that the glass or acrylic does not degrade or become damaged during processing
• Sight glasses are beneficial for early detection of inconsistencies in product during processing
• Certain sight glasses can be designed to help determine the level in your process tanks

When it comes to viewing process flow, there are multiple ways to see your media. Original standard stainless steel sight glasses constructed from different components can wear out causing costly down time and repairs.

Steel & O’Brien’s new Clear Acrylic Sight Tubes are ideal for simple sight requirements as well as tank level indication. These acrylic sanitary clamp sight tubes are very economical, made from ASTM 5436-D, FDA-approved acrylic and can be clamped into your sanitary line seamlessly. They are one piece and come in many lengths for tube OD sizes 1-1/2”, 2”, 3” and 4”. Longer clamp acrylic sight tubes in OD sizes 1-1/2” and 2”are great for tank level gauges and very cost effective as well.

To find the right sight glass for your application, visit