
Weld To Tank Sight Glass ZW30 - Led Lighting
The Douglass ZW30 LED - Weld-to-Tank Sight Glass is a robust and versatile solution designed for industrial applications that demandreliable visibility into tank processes. Engineered for tanks operating under 300 PSI, this sight glass combines ease of installation with a sleek, professional appearance. Its durable construction and compatibility with various materials make it ideal for a wide range of environments, from chemical processing to food and beverage production.
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 Douglass ZW30 LED - Weld-to-Tank Sight Glass is a robust and versatile solution designed for industrial applications that demandreliable visibility into tank processes. Engineered for tanks operating under 300 PSI, this sight glass combines ease of installation with a sleek, professional appearance. Its durable construction and compatibility with various materials make it ideal for a wide range of environments, from chemical processing to food and beverage production. The ZW30 offers both standard and customizable options, ensuring it meets the specific needs of any project, while its aesthetically pleasing design enhances the overall look of the installation. The addition of the LED system enables the user to illuminate vessels which are not naturally illuminated or dont have a natural access to light. LED can come in 12/24 V, with the option for 110/220 A. Under special requests, these lampos can be explosion-proof or have an IP rating.
LED Sight Glass - Advantages
Ease of Installation
The ZW30 is designed for quick and straightforward installation, reducing downtime and labor costs during setup. Its user-friendly design ensures that even complex installations can be completed efficiently.
Aesthetic Design
The screws are positioned into the upper flange, giving the ZW30 a clean and professional appearance. This makes it an excellent choice for installations where visual appeal is important.
Customizable Options
While the ZW30 comes in standard sizes, it offers customization options to meet specific project requirements, including adjustments to metal thickness, glass type, and gasket materials.
Cost-Effective Solution
The ZW30 provides a reliable and durable sight glass solution at a competitive price, making it an excellent choice for industries looking to balance performance with cost-efficiency.
Durable Construction
Built from high-quality materials like carbon steel or stainless steel, the ZW30 is resistant to corrosion and wear, ensuring long-term performance even in challenging environments.
Versatility
Suitable for a wide range of industrial applications, from chemical processing to food and beverage production, the ZW30 can be adapted to various operating conditions and requirements.
LED Lighting
For installations in dark 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.
Sight Glass Lights for Process Observation - Parts and Materials

| Item | Part name | Material options |
|---|---|---|
| 1 | LED Vision2Allen Bolts |
|
| 3 | Cover Flange |
|
| 4 | Gasket (max temp) |
|
| 5 | Sight Glass |
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| 6 | Weld Pad |
|

TECHNICAL INFORMATION
| ID | 3" | 5" | 3.5" | 4" | 6" | 3.5" | 5" |
|---|---|---|---|---|---|---|---|
| A (Visible Diam) | 3" (76.20 mm) | 5" (127.00 mm) | 3.5" (88.90 mm) | 4" (101.6 mm) | 6" (152.40 mm) | 3.5" (88.90 mm) | 5" (127.00 mm) |
| B (Total Diam) | 7.5" (190.50 mm) | 4" (101.60 mm) | 6" (152.40 mm) | 9" (228.60 mm) | 4.5" (114.30 mm) | 7" (177.80 mm) | 10" (254.00 mm) |
| C (Total Thickness) | 5" (127.00 mm) | 8" (203.20 mm) | 11" (279.40 mm) | 5" (127.00 mm) | 9" (228.60 mm) | 12" (304.80 mm) | 6" (152.40 mm) |
