Pipe Flange
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Pipe Flange
Blind Flange (BL)
Used for pipeline termination, vessel manholes, future branch connections and temporary isolation of process systems.
- Category
- Pipe Flange
- Specification
- RF / RTJ / ASME B16.5 / NPS 1/2-24 in
- Product code
- BL-RF
Product details
Pressure Rating and Sealing Size
A Blind Flange (BL) is a solid disc without central bore. It bolts to flange face to seal pipe end, nozzle or vessel opening. It bears full pipeline pressure, used for isolation and blanking. Because the disc carries the full line pressure, the flange is specified as a pressure-bearing closure matched to the mating flange face and bolt pattern of the line it blanks.
| Item | Data |
|---|---|
| Type | Blind Flange (BL) |
| Structure | Solid disc without central bore |
| Function | Seals pipe end, nozzle or vessel opening; bears full pipeline pressure |
| Available faces | RF, FF, RTJ, MFM, T&G |
| Size range | NPS 1/2-24 in (ASME B16.5) |
It bears full pipeline pressure, used for isolation and blanking.
Available Sealing Faces
The blind flange can be supplied with any of the sealing faces below to suit the mating flange of the line being closed:
- RF
- FF
- RTJ
- MFM
- T&G
Typical Applications
- Pipe end closure
- Hydrostatic pressure test
- Equipment isolation
- Blocking spare nozzles for future expansion
- Pressure vessel blanking
Applicable Standards
| Standard system | Designation |
|---|---|
| ASME | ASME B16.5, ASME B16.47 |
| EN | EN 1092-1 Type05 |
| GB | GB/T9123, HG/T20615 / HG/T20592 |
| JIS | JIS B2220 |
| GOST | GOST 33259 |
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