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Sight Windows
The weldable oval sight glasses are devices installed in tanks and pressure vessels to allow the visualization of the contents and the processes occurring inside the tank. The oval shape of the sight glass provides a wide viewing area allowing operators to more easily inspect the tank's contents and internal processes.
Weldable Oval Tank Sight Glasses The weldable oval sight glasses are devices installed in tanks and pressure vessels to allow the visualization of the contents and the processes occurring inside the tank. The oval shape of the sight glass provides a wide viewing area allowing operators to more easily inspect the tank's contents and internal processes.
Ease of Installation
The ZW30 is designed for quick and simple installation, minimizing downtime and labor costs during setup. Its intuitive design ensures even complex installations can be completed efficiently.
Aesthetic Design
The screws are placed on the upper flange, giving the ZW30 a sleek and professional appearance. This makes it an ideal choice for installations where visual appeal is important.
Customizable Options
While the ZW30 comes in standard sizes, it can be customized to meet specific project needs, including adjustments in metal thickness, glass type, and gasket materials.
Cost-Effective Solution
The ZW30 offers a reliable and durable sight glass at a competitive price, making it a great option for industries aiming to balance performance and cost-efficiency.
Durable Construction
Constructed from high-quality materials like carbon steel or stainless steel, the ZW30 is resistant to corrosion and wear, ensuring long-lasting performance even in challenging environments.
Versatility
Suitable for a broad range of industrial applications, from chemical processing to food and beverage production, the ZW30 can adapt to various operating conditions and requirements.
Optional LED Lighting
For installations in low-light environments, the ZW30 can be equipped with an optional LED light, enhancing visibility and safety. The light is protected by a polycarbonate layer to prevent damage from potential explosions inside the tank.

| Item | Part name | Material options |
|---|---|---|
| 1 | Nut |
|
| 2 | Washer |
|
| 3 | Stud bolt |
|
| 4 | Cover Flange |
|
| 5 | Gasket (max temp) |
|
| 6 | Sight Glass |
|
| 7 | Weld Pad |
|
Oval Tank Glass Windows -

| Part ID | Visible dimensions (internal) A × B | Weldable dimensions (external) C × D | Flange thickness H1 × H2 |
|---|---|---|---|
| ZW30-CO-200X2020 | 0 x 2027 | 0 x 701 | 5 x 25 |
| ZW30-CO-270X2027 | 0 x 2034 | 0 x 701 | 5 x 25 |
| ZW30-CO-340X2034 | 0 x 2041 | 0 x 701 | 5 x 25 |
| ZW30-CO-410X2041 | 0 x 2048 | 0 x 701 | 5 x 25 |
| ZW30-CO-480X2048 | 0 x 2055 | 0 x 701 | 5 x 25 |
| ZW30-CO-550X2055 | 0 x 2062 | 0 x 701 | 5 x 25 |
| ZW30-CO-620X2062 | 0 x 2069 | 0 x 701 | 5 x 25 |
| ZW30-CO-690X2069 | 0 x 2076 | 0 x 701 | 5 x 25 |
For more information about this and other products, including our Oval Tank Sight Glasses, we invite you to visit our contact page. Our team at Gulf Coast Glass is ready to assist you with tailored solutions for your process equipment needs.
Talk to our team
Contact us with your application details — pressure, media, and connections — and we will help you specify the right sight glass.