Custom-made materials.
Professional Solution for Secure Line Isolation
Spectacle flanges are specialized safety devices used in pipeline systems to safely interrupt or resume flow.
Shaped like a pair of glasses, this system operates with a dual function: one side closed (blind) and the other open (spacer).
At Pozitif Çelik, we offer high-quality spectacle flange solutions for critical pipelines.
OPERATING PRINCIPLE
The Spectacle flange is a bidirectional system that can be used in two different positions:
• Blind side → The line is completely closed
• Spacer side → Flow continues
It ensures safe isolation of the line during maintenance and repair processes.
It provides safe isolation of the line during maintenance and repair processes. APPLICATIONS
Spectacle flanges are preferred in systems where safety is critical:
✔ Oil and gas pipelines
✔ Chemical and petrochemical plants
✔ Power plants
✔ Industrial piping systems
ADVANTAGES
✔ The open/closed status of the pipeline is easily understood from the outside
✔ Provides more precise and secure insulation compared to valves
✔ Offers an economical and long-lasting solution
✔ Allows for quick intervention thanks to its rotatable structure
TECHNICAL SPECIFICATIONS
Design Structure
• Blind (closed disc)
• Spacer (open ring)
• One-piece connection design
Pressure Classes
• Class 150
• Class 300
• Class 600
• Class 900
• Class 1500
• Class 2500
Manufacturing Standards
Spectacle Flanges are generally manufactured according to the following standards:
✔ ASME B16.48
✔ ASME / ANSI norms
