8-Shape Blind Flange
- Switching Function: Capable of achieving rapid switching between pipeline connection and isolation
- Easy Operation: Rotation operation without requiring disassembly of connections
- Safe and Reliable: Robust design ensuring operational safety
- Time Saving: Eliminates frequent assembly/disassembly, saving maintenance time
- Strong Corrosion Resistance: High-quality materials resistant to various corrosive media
- Wide Application: Suitable for multiple industrial pipeline systems
8-Shape Blind Flange is a special shaped blind flange named for its similarity to the Chinese character "八" (eight), also known as 8-type blind flange or spectacle blind flange. The product consists of two flanges connected by a central connecting arm, with one flange having a hole (open path) and the other flange having no hole (blind plate), used for isolation and connection switching in pipeline systems. The 8-shape blind flange is widely used in pipeline systems in industries such as petrochemical, power, pharmaceutical, and water treatment, especially suitable for applications requiring frequent switching of isolation status. By rotating the 8-shape blind flange, the pipeline can be easily connected or isolated without disassembling the flange connection. The 8-shape blind flange has a clever design with simple operation and safe and reliable performance, making it an important isolation equipment in pipeline systems. The product is manufactured using high-quality stainless steel, carbon steel or alloy steel materials with excellent corrosion resistance and mechanical strength.
Technical Standards
| Item | Technical Standard |
|---|---|
| Material | 304, 316L Stainless Steel, Carbon Steel, Alloy Steel |
| Pressure Rating | Class150-Class2500 |
| Size Range | 1/2"-48" (DN15-DN1200) |
| Temperature Range | -29℃ to +425℃ |
| Connection Type | Flanged Connection |
| Flange Standard | ASME B16.5, GB/T 9113, DIN, JIS |
| Face Type | Raised Face, Flat Face, Male/Female Face |
| Design Standard | ASME B16.48, GB/T 9124 |
Basic Models
| Model | Type | Features |
|---|---|---|
| BSF-150 | 150Lb 8-Shape Blind Flange | Low pressure application, cost-effective |
| BSF-300 | 300Lb 8-Shape Blind Flange | Medium pressure application, stable performance |
| BSF-600 | 600Lb 8-Shape Blind Flange | High pressure application, high strength |
| BSF-900 | 900Lb 8-Shape Blind Flange | Ultra-high pressure application, safe and reliable |
Main Components Material Table
| No. | Part Name | Material |
|---|---|---|
| 1 | Blind Flange Body | A105, A182 F304, A182 F316 |
| 2 | Connecting Arm | Same as blind flange body |
| 3 | Sealing Face | Same as blind flange body or overlay alloy |
| 4 | Bolt Holes | Matched to flange standard |
| 5 | Gasket | Flexible Graphite, PTFE, Metal Wound Gasket |
| 6 | Fasteners | A193 B7, A193 B8 |
| 7 | Surface Treatment | Anti-corrosion coating, galvanized, passivated |
| 8 | Identification Marking | Laser marking or cast lettering |
No drawing available.
