PRODUCT FEATURES
American Spectacle Blind Flanges（figure-8 blind）
- Size: 1/2″-24″(DN12-DN600)
- Standard:ASME B16.48
- Pressure Classes:150, 300, 600, 900, 1500, 2500
- Grade:304/L,316/L,310S,321,904/L;DEPLEX S31803/F51,S32750/F53
🔹 What is Spectacle Blind Flange?
Spectacle Blind Flange (also called a “figure-8 blind”) is a safety device used in piping systems to isolate or allow flow when needed. It consists of two metal discs connected by a handle:
One solid end (blind) – Blocks flow completely (for maintenance or safety).
One open end (spacer) – Allows full flow when rotated into position.
✅ Key Features:
✔ ASME B16.48 compliant (standard for spectacle blinds)
✔ Used in high-pressure systems (oil & gas, chemical plants, power generation)
✔ Easy to install/rotate without disassembling pipes
