Weld To Tank Sight Glass ZW30 - 300 PSI
The Douglass ZW30 Weld-to-Tank Sight Glass is a high-performance solution designed for demanding industrial applications requiring enhanced durability and higher pressure ratings. Suitable for tanks operating up to 300 PSI, the ZW30 is engineered to provide clear, reliable visibility into tank processes while withstanding the rigors of more intensive environments. Its robust construction allows for greater torque application, making it ideal for use with metal-inserted gaskets.
OUR WARRANTY
100% Satisfaction Guarantee
Douglass warrants merchandise against defective workmanship and materials that become apparent within a period of 12 months from the date of receipt of invoice by the purchaser (hereinafter referred to as the warranty period). All liabilities under the warranty provisions shall expire when the warranty period has expired. Please feel free to contact us if you have any questions or comments.
SHIPPING AND PACKAGING
At Douglass, we use a unique and patented packaging method that minimizes the risk of glass damage during shipping. This system ensures your products arrive in perfect condition, just as we would like to receive them ourselves.
We understand that not all glass is the same, so we tailor our packaging techniques based on the type and quantity of products you order. This ensures maximum protection for every shipment.
The ZW30 is larger and thicker than its counterparts, offering superior strength and longevity. With options for customization, this model ensures precise alignment with specific project requirements, delivering both reliability and flexibility for industries where safety and performance are paramount. Weldable tank sight glasses allow for a total view of the inside of a process. Depending on the fluid temperature and pressure to work with, a recommendation can be made on the best material of manufacture, types of crystals and types of gaskets.
Weld-On Sight Glass - Advantages
High Pressure Capability
The ZW30 is designed to handle pressures up to 300 PSI, making it suitable for more demanding industrial applications.
Greater Torque Tolerance
The ZW30 can accommodate metal-inserted gaskets and allows for higher torque application, ensuring a tighter, more secure seal, especially in high-pressure environments.
Robust Construction
With a larger and thicker design compared to the ZW15, the ZW30 offers enhanced durability and longevity, even under harsh operating conditions.
Customization Flexibility
Like the ZW15, the ZW30 can be customized to meet specific project requirements, including adjustments to flange thickness, glass type, and gasket materials.
Versatile Application
The ZW30 is ideal for industries that require a robust, high-performance sight glass, such as chemical processing, oil and gas, and heavy manufacturing.
Optional LED Lighting
The ZW30 can be equipped with an optional LED light, enhancing visibility in lowlight conditions and providing added safety features. The protective polycarbonate layer ensures the light is shielded from potential damage.
Reliable Performance
The ZW30’s construction and design provide reliable and consistent performance, reducing the risk of leaks and ensuring safety in high-pressure applications.
Sight Windows - Parts and Materials
| Item | Part name | Material options |
|---|---|---|
| 1 | Cover Flange |
|
| 2 | Weld Pad |
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| 3 | Sight Glass (max temp) |
|
| 4 | Gaskets *(max temp) |
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| 5 | Bolts |
|
TECHNICAL INFORMATION — dimensions
| ZW30-2 | ZW30-3 | ZW30-4 | ZW30-5 | ZW30-6 | ZW30-7 | ZW30-8 | |
|---|---|---|---|---|---|---|---|
| Visible Diameter (A) | 2" | 3" | 4" | 5" | 6" | 7" | 8" |
| Total Diameter (B) | 5" | 6" | 7" | 8-1/2" | 10" | 11" | 13" |
Flange thickness
| ZW30-2 | ZW30-3 | ZW30-4 | ZW30-5 | ZW30-6 | ZW30-7 | ZW30-8 | |
|---|---|---|---|---|---|---|---|
| Cover (H1) | 3/4" | 3/4" | 3/4" | 1" | 1-1/4" | 1-1/4" | 1-1/2" |
| Weld Pad (H2) | 1" | 1" | 1" | 1-1/4" | 1-1/2" | 1-1/4" | 1-1/2" |
Glass size (Tempered Borosilicate)
| ZW30-2 | ZW30-3 | ZW30-4 | ZW30-5 | ZW30-6 | ZW30-7 | ZW30-8 | |
|---|---|---|---|---|---|---|---|
| Ø | 3-3/4" | 4-3/4" | 5-3/4" | 7" | 8" | 9" | 11" |
| Thickness | 3/4" | 3/4" | 1" | 3/4" | 1-1/4" | 1-1/4" | 1-1/4" |
Bolt circle & torque
| ZW30-2 | ZW30-3 | ZW30-4 | ZW30-5 | ZW30-6 | ZW30-7 | ZW30-8 | |
|---|---|---|---|---|---|---|---|
| Bolt Circle Diameter (C) | 3-3/8" | 4-3/8" | 6-3/8" | 7-3/4" | 9" | 10" | 12" |
| Tightening Torque (ft/lbs) | 17 | 17 | 19 | 22 | 25 | 28 | 32 |
*Glass Sizes are for Tempered Borosilicate glass only. Please contact us for details regarding any other glass material. *Torque values may vary depending on gasket material. Please contact us for details regarding specific torque for your application.
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