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Dimensions of Class 150 Female Ring-Joint Facing Figure-8 Blanks
Class 150 female ring-joint facing figure-8 blanks are specialized pipeline components designed for use in sealing and isolating pipe sections with Ring-Joint (RJ) flanges. The figure-8 blank features a unique shape that fits into the flange’s female ring-joint groove, offering a secure and leak-proof isolation of the pipeline. These blanks are commonly used in high-pressure systems where it’s necessary to either shut off a section of a pipeline or temporarily isolate it from the rest of the system.
Dimensions of Class 150 Female Ring-Joint Facing Figure-8 Blanks:
Dimensions of Class 150 Female Ring Joint Facing Figure 8 Blanks
Haihao Group can provide a variety ASME B16.48 standard flange,as follows:
| NPS | Inside Diameter,B,mm(in.) | Outside Diameter,O,mm(in.) | Centerline Dimension,A,mm(in.) | Thickness,t,mm(in.) | Web Width,W,mm(in.) |
| 1 | 34 (1.32) | 64 (2.50) | 80 (3.12) | 19.1 (0.75) | 51 (2.00) |
| 1¼ | 42 (1.66) | 73 (2.88) | 90 (3.50) | 19.1 (0.75) | 51 (2.00) |
| 1½ | 48 (1.90) | 83 (3.25) | 100 (3.88) | 19.1 (0.75) | 57 (2.25) |
| 2 | 61 (2.38) | 102 (4.00) | 120 (4.75) | 19.1 (0.75) | 57 (2.25) |
| 2½ | 73 (2.88) | 121 (4.75) | 140 (5.50) | 22.4 (0.88) | 57 (2.25) |
| 3 | 89 (3.50) | 133 (5.25) | 150 (6.00) | 22.4 (0.88) | 57 (2.25) |
| 3½ | 102 (4.00) | 154 (6.06) | 175 (7.00) | 22.4 (0.88) | 64 (2.50) |
| 4 | 114 (4.50) | 171 (6.75) | 190 (7.50) | 22.4 (0.88) | 64 (2.50) |
| 5 | 141 (5.56) | 194 (7.62) | 215 (8.50) | 25.4 (1.00) | 70 (2.75) |
| 6 | 168 (6.62) | 219 (8.62) | 240 (9.50) | 25.4 (1.00) | 83 (3.25) |
| 8 | 219 (8.62) | 273 (10.75) | 300 (11.75) | 28.4 (1.12) | 95 (3.75) |
| 10 | 273 (10.75) | 330 (13.00) | 360 (14.25) | 31.8 (1.25) | 102 (4.00) |
| 12 | 324 (12.75) | 406 (16.00) | 430 (17.00) | 35.1 (1.38) | 121 (4.75) |
| 14 | 356 (14.00) | 425 (16.75) | 475 (18.75) | 35.1 (1.38) | 127 (5.00) |
| 16 | 406 (16.00) | 483 (19.00) | 540 (21.25) | 38.1 (1.50) | 127 (5.00) |
| 18 | 457 (18.00) | 546 (21.50) | 580 (22.75) | 41.1 (1.62) | 127 (5.00) |
| 20 | 508 (20.00) | 597 (23.50) | 635 (25.00) | 41.1 (1.62) | 127 (5.00) |
| 24 | 610 (24.00) | 711 (28.00) | 750 (29.50) | 47.8 (1.88) | 152 (6.00) |
NOTES:
(1)Hole size(where required due to bolt spacing)shall be the same as the flange bolt hole and located such that it will not interfere with bolting
between two flanges.
(2)Female ring-joint groove dimensions shall be in accordance with ASME B16.5
(3)The thickness of the web (or tie bar)dimension,Wt shall be as determined by para.4.1.
Haihao Group can provide a variety ASME B16.48 standard flange,as follows:
- Dimensions of Class 150 Blanks for Use With Raised Face Flanges
- Dimensions of Class 300 Blanks for Use With Raised Face Flanges
- Dimensions of Class 600 Blanks for Use With Raised Face Flanges
- Dimensions of Class 900 Blanks for Use With Raised Face Flanges
- Dimensions of Class 1500 Blanks for Use With Raised Face Flanges
- Dimensions of Class 2500 Blanks for Use With Raised Face Flanges
- Dimensions of Class 150 Female Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 300 Female Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 600 Female Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 900 Female Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 1500 Female Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 2500 Female Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 150 Male Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 300 Male Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 600 Male Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 900 Male Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 1500 Male Ring-Joint Facing Figure-8 Blanks
- Dimensions of Class 2500 Male Ring-Joint Facing Figure-8 Blanks
The Figure-8 blank has an octagonal or figure-eight shape designed to cover the central bore of the flange, while the two raised sections (or ears) fit securely within the flange’s female ring-joint groove.
This shape is specifically designed to ensure a tight and uniform seal when used with ring-joint flanges.
Material Options:
These blanks are typically made from materials that match the flange materials, such as:
- Carbon steel (e.g., A105)
- Stainless steel (e.g., A182 F304, A182 F316)
- Alloy steel (e.g., A387 GR.11)
The material selection depends on the application’s temperature, pressure, and corrosion requirements.
Applications:
Pipeline Isolation: Class 150 Female Ring-Joint Facing Figure-8 blanks are ideal for temporarily isolating sections of a pipeline for maintenance, inspection, or repair. These blanks prevent fluid or gas flow during shutdowns, ensuring safety during maintenance operations.
Flange Sealing: When paired with Ring-Joint flanges, the Figure-8 blank ensures a reliable, tight seal, preventing leaks in pressurized systems. It provides an efficient way to close off a line without dismantling the entire pipeline.
Temporary Shutdowns: These blanks are used in pipelines when an emergency shutdown occurs, or when a portion of the pipeline needs to be out of service without disrupting the entire system.
Power Generation & Chemical Industries: These blanks are commonly used in industries where reliable sealing and safe shutdowns are critical, such as in chemical processing, oil and gas, power generation, and refining.
For detailed project requirements or precise dimensions for a specific application, it’s recommended to consult the ASME B16.48 standard or contact professional supplier like Haihao Group. Email:sales@haihaogroup.com