Flanges / BL
Blind Flange
Used for line termination, maintenance isolation, and pressure testing.
Technical Specifications
Pressure
150# - 2500#
Temperature
-29°C to +538°C (Carbon) | -196°C to +816°C (Stainless)
Size
1/2" - 60"
materials
A105, A350 LF2, A182 F304/L, A182 F316/L, A182 F11, A182 F22
Standards
ASME B16.5, ASME B16.47, EN 1092-1
Key Features
- Complete sealing
- Enables pressure testing
- Maintenance isolation
- Reusable
- High pressure capacity
- Easy assembly/disassembly
Applications
- Line termination
- Tank nozzles
- Maintenance covers
- Test points
- Boiler connections
- Future expansion points
Dimension Table
| Nominal Size | Outside Diameter (mm) | Thickness (mm) | Bolt Circle (mm) | No. of Bolts | Bolt Size |
|---|---|---|---|---|---|
| 2" | 152 | 19 | 120.7 | 4 | 5/8" |
| 4" | 229 | 24 | 190.5 | 8 | 5/8" |
| 8" | 343 | 29 | 298.5 | 8 | 3/4" |
| 12" | 483 | 33 | 431.8 | 12 | 7/8" |
| 16" | 597 | 37 | 539.8 | 16 | 1" |
Technical Notes
- 01Thickness varies with pressure class.
- 02High-class blinds can be heavy.
- 03Observe correct bolt torque during assembly.
- 04Gasket selection is critical for sealing.
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