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Dimensions of Class 900 Female Ring-Joint Facing Figure-8 Blanks
Class 900 Female Ring-Joint Facing Figure-8 Blanks are essential components in high-pressure pipeline systems, designed to provide reliable sealing and isolation when installed with Class 900 Ring-Joint (RJ) flanges. These blanks are crucial in various industrial applications, particularly where the need for secure, leak-proof sealing is paramount, such as in the oil and gas, chemical processing, and power generation industries.
The Figure-8 shape is a distinctive design used in these blanks to ensure they fit perfectly into the female ring-joint groove of the Class 900 flange. The unique shape of the blank ensures a robust, high-performance seal under high-pressure conditions, providing an effective isolation point for pipeline systems during maintenance, repairs, or emergency shutdowns.
Dimensions of Class 900 Female Ring-Joint Facing Figure-8 Blanks:
Dimensions of Class 900 Female Ring Joint Facing Figure 8 Blanks
| 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.) |
| ½ | 21 (0.84) | 61 (2.38) | 80 (3.25) | 22.4(0.88) | 38 (1.50) |
| ¾ | 27 (1.05) | 67 (2.62) | 90 (3.50) | 22.4 (0.88) | 45 (1.75) |
| 1 | 34 (1.32) | 71 (2.81) | 100 (4.00) | 22.4 (0.88) | 51 (2.00) |
| 1¼ | 42 (1.66) | 81 (3.19) | 110 (4.38) | 25.4 (1.00) | 51 (2.00) |
| 1½ | 48 (1.90) | 92 (3.62) | 125 (4.88) | 25.4 (1.00) | 64 (2.50) |
| 2 | 61 (2.38) | 124 (4.88) | 165 (6.50) | 31.8 (1.25) | 51 (2.00) |
| 2½ | 73 (2.88) | 137 (5.38) | 190 (7.50) | 35.1 (1.38) | 67 (2.62) |
| 3 | 89 (3.50) | 155 (6.12) | 190 (7.50) | 35.1 (1.38) | 67 (2.62) |
| 4 | 114 (4.50) | 181 (7.12) | 235 (9.25) | 41.1 (1.62) | 73 (2.88) |
| 5 | 141 (5.56) | 216 (8.50) | 280 (11.00) | 44.5 (1.75) | 73 (2.88) |
| 6 | 168 (6.62) | 241 (9.50) | 315 (12.50) | 47.8 (1.88) | 73 (2.88) |
| 8 | 219 (8.62) | 308 (12.12) | 395 (15.50) | 57.2 (2.25) | 80 (3.12) |
| 10 | 273 (10.75) | 362 (14.25) | 470 (18.50) | 63.5 (2.50) | 121 (4.75) |
| 12 | 324 (12.75) | 419 (16.50) | 535 (21.00) | 73.2 (2.88) | 121 (4.75) |
| 14 | 356 (14.00) | 467 (18.38) | 560 (22.00) | 82.6 (3.25) | 121 (4.75) |
| 16 | 406 (16.00) | 524(20.62) | 615 (24.25) | 91.9 (3.62) | 127 (5.00) |
| 18 | 457 (18.00) | 594 (23.38) | 685 (27.00) | 101.6 (4.00) | 133 (5.25) |
| 20 | 508 (20.00) | 648 (25.50) | 750 (29.50) | 111.3 (4.38) | 127 (5.00) |
| 24 | 610 (24.00) | 772 (30.38) | 900 (35.50) | 133.4 (5.25) | 140 (5.50) |
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
Key Features of Class 900 Female Ring-Joint Facing Figure-8 Blanks
Figure-8 Design:
The Figure-8 shape is specifically designed to match the female ring-joint groove of a Class 900 flange, providing a tight and reliable seal.
This unique design ensures a perfect fit and reduces the risk of leakage, even under extreme pressure conditions.
High-Pressure Rating:
Class 900 components are rated for use in systems operating at pressures up to 900 psi. The Figure-8 blank helps maintain the integrity of the system by ensuring that high-pressure conditions do not lead to leaks or failures.
Material Composition:
These blanks are typically made from carbon steel, stainless steel, or alloy materials. The choice of material depends on the specific application and operating conditions, ensuring excellent strength, corrosion resistance, and reliability.
Materials like A350 GR.LF2, A182 GR.F304, and A516 GR.70 are common choices for such high-pressure components.
Sealing Performance:
The Figure-8 blank ensures a secure seal, preventing the flow of fluids or gases through the pipeline when the system is shut down or undergoing maintenance.
It also helps to prevent contamination of the fluid in the pipeline and ensures the safety and efficiency of the system.
Easy Installation:
These blanks are designed for easy installation with Class 900 Ring-Joint flanges. The bolt holes are perfectly aligned with the bolt circle of the flange, allowing for quick and secure installation with the appropriate bolts.
Compatibility:
Class 900 Female Ring-Joint Facing Figure-8 Blanks are compatible with a range of Class 900 flanges, which are commonly used in high-pressure pipeline systems. The blank ensures a leak-proof isolation point when used in tandem with these flanges.
Applications of Class 900 Female Ring-Joint Facing Figure-8 Blanks
Pipeline Isolation:
These blanks are primarily used to isolate sections of pipeline during maintenance, repairs, or shutdowns. They provide a quick and effective way to seal off a pipeline, ensuring that work can be carried out safely without disrupting the entire system.
High-Pressure Systems:
Ideal for use in high-pressure systems such as those found in the oil and gas, chemical processing, and power generation industries, these blanks offer reliable sealing even under extreme conditions.
Shutdowns and Emergency Isolation:
In situations where a pipeline needs to be isolated quickly, such as during emergency shutdowns, the Figure-8 blank serves as a reliable means of sealing off the system and preventing further fluid or gas flow.
Preventing Contamination:
By isolating certain sections of a pipeline, these blanks help prevent contamination from spreading through the system during testing, maintenance, or when different fluids are present in the pipeline.
Flange Protection:
These blanks also protect the flange faces from damage during transportation, storage, or when a section of the pipeline is not in use.
Advantages of Using Class 900 Female Ring-Joint Facing Figure-8 Blanks
High-Pressure Performance:
Class 900 blanks are specifically designed to withstand the pressures encountered in high-pressure applications. The Figure-8 design ensures a strong, secure seal that won’t fail under pressure.
Leak-Proof Operation:
The tight seal created by the Figure-8 design ensures that there is no leakage, even when subjected to extreme conditions. This is essential for maintaining the safety and integrity of high-pressure pipeline systems.
Durability:
The use of high-quality materials ensures that these blanks offer long-lasting durability. They can withstand the mechanical stresses, temperature fluctuations, and corrosive environments typically encountered in industrial applications.
Cost-Effective:
While offering reliable performance and high-pressure capabilities, the Class 900 Female Ring-Joint Facing Figure-8 Blanks are a cost-effective solution for pipeline isolation and shutdowns, offering long-term value and reliability.
Compatibility with Ring-Joint Flanges:
The Figure-8 blank is perfectly matched with Class 900 Ring-Joint flanges, making installation and use straightforward without compatibility issues.
Dimension Considerations for Class 900 Female Ring-Joint Facing Figure-8 Blanks
The dimensions of these blanks vary depending on the Nominal Pipe Size (NPS) and the pressure class of the flanges being used. However, some typical considerations include:
- Bolt Circle Diameter (BCD): This will increase as the NPS size increases, ensuring the blank fits the bolt circle of the Class 900 flange.
- Number of Bolt Holes: Typically ranges from 4 to 12 holes, depending on the flange size, with each hole properly sized for the bolts to ensure a tight, secure fit.
- Blank Thickness: The thickness of the blank will vary depending on the pressure rating of the flange and the size of the blank, ensuring the material can withstand the expected pressure load.
Class 900 Female Ring-Joint Facing Figure-8 Blanks play a crucial role in providing secure and reliable sealing in high-pressure pipeline systems. The Figure-8 design ensures compatibility with Class 900 flanges, offering a leak-proof seal for pipeline isolation during maintenance, repairs, or emergency shutdowns.
Their high-pressure performance, durability, and cost-effectiveness make them a preferred choice for industries where safety, reliability, and efficiency are paramount. Whether you’re looking to isolate a pipeline section, prevent contamination, or protect flange faces, these Class 900 blanks offer a robust solution for your pipeline system needs.
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