Safe, Efficient Access to Pressure/Process Vessels
SG Industrial Inc. offers a robust range of Quick Opening Closures engineered and manufactured by Sungov Engineering to provide rapid and reliable access to pressure vessels. Designed for safety, compliance, and efficiency, our closures help operators perform maintenance, inspections, and cleaning with minimal downtime—while meeting the rigorous requirements of ASME Section VIII, Division 1.
Key Benefits:
- Rapid Access, Minimal Downtime
• Clamp-Type Closures: Ideal for frequent access in small to medium diameter vessels
• Segmented Band (Seg Band 2) Closures: Proven design for larger diameters and higher flow capacities
- Built for High Pressure
• Design pressures up to Class 900
• Sizes available up to 52 inches diameter
- ASME Section VIII, Division 1 Compliance
• Designed and manufactured in accordance with ASME Section VIII, Division 1, UG-35 requirements
• ASME “U” Stamp available upon request
- Enhanced Safety Features
• Mechanical locks to prevent inadvertent opening under pressure
• Pressure warning devices or bleed ports to ensure zero internal pressure before opening
• Secondary seals and gaskets to prevent leaks
Technical Overview:
| Design Pressure | Up to Class 900 |
|---|---|
| Size Range | Up to 52″ diameter |
| Closure Types | Clamp-Type and Segmented Band (Seg Band 2) |
| Construction Materials | Carbon steel, stainless steel, or specialty alloys |
| End Connections | Welded or bolted flange |
| ASME Certification | Optional “U” Stamp available |
Why Choose SG Industrial Inc. Quick Opening Closures?

Engineered for Safety
Designed with operator safety in mind: mechanical interlocks, bleed ports, and pressure warning devices to prevent accidental opening under pressure.

Compliance You Can Trust
Our closures comply with ASME Section VIII requirements, including UG-35(a)/UG-35(b) and UG-35(c), to ensure safe operation under high-pressure conditions.

Efficient and Versatile
Available in clamp-type and segmented band configurations to match your process needs, with quick opening mechanisms that reduce maintenance time and improve productivity.
Typical Applications:
- Filter vessels and strainers
- Separators and knockout drums
- Scrubbers and process gas vessels
- Oil & gas, petrochemical, and power generation systems
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Oil & Gas
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Petrochemical & Chemical
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Power Generation
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Environmental
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Utilities
FAQ — Quick Opening Closures
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