Dimensions of Class 2500 Female Ring-Joint Facing Figure-8 Blanks

Class 1500 Female Ring-Joint Facing Figure-8 Blanks are specialized components designed to provide reliable flow management in high-pressure pipeline systems. These figure-8 blanks, also referred to as spectacle blinds, are essential in industries where operational safety and efficiency are paramount.

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 2500 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) 65 (2.56) 90 (3.50) 25.4(1.00) 38 (1.50)
¾ 27 (1.05) 73 (2.88) 95 (3.75) 28.4 (1.12) 45 (1.75)
1 34 (1.32) 83 (3.25) 110 (4.25) 28.4 (1.12) 54 (2.12)
42 (1.66) 102 (4.00) 130 (5.12) 35.1 (1.38) 54 (2.12)
48 (1.90) 114 (4.50) 145 (5.75) 38.1 (1.50) 61 (2.38)
2 61 (2.38) 133 (5.25) 170 (6.75) 41.1 (1.62) 57 (2.25)
73 (2.88) 149 (5.88) 195 (7.75) 47.8 (1.88) 61 (2.38)
3 89 (3.50) 168 (6.62) 230 (9.00) 50.8 (2.00) 76 (3.00)
4 114 (4.50) 203 (8.00) 270 (10.75) 63.5 (2.50) 83 (3.25)
5 141 (5.56) 241 (9.50) 325 (12.75) 73.2 (2.88) 89 (3.50)
6 168 (6.62) 279 (11.00) 370 (14.50) 82.6 (3.25) 95 (3.75)
8 219 (8.62) 340 (13.38) 440 (17.25) 98.6 (3.88) 95 (3.75)
10 273 (10.75) 425 (16.75) 540 (21.25) 117.3 (4.62) 91 (3.58)
12 324 (12.75) 495 (19.50) 620 (24.38) 133.4 (5.25) 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:

Applications

Class 1500 Female Ring-Joint Facing Figure-8 Blanks are extensively used in industries such as:

  • Oil and Gas: High-pressure pipelines in upstream, midstream, and downstream operations.
  • Petrochemical: Critical for isolating sections in chemical processing plants.
  • Power Generation: Ensuring safety and control in steam and gas turbine systems.
  • Marine and Offshore: Used in offshore platforms and marine engineering applications.

Advantages

Enhanced Safety:

Provides a secure method to isolate or resume flow, minimizing the risk of leaks or accidents.

Versatile Functionality:

Easily switched between blind and spacer positions to suit operational needs.

High Durability:

Engineered to withstand harsh environments, including corrosive and high-pressure conditions.

Precision Engineering:

Compliance with ASME and other international standards ensures seamless integration with pipeline systems.

Quality Assurance

At Haihao Group, all Class 1500 Figure-8 Blanks are subjected to rigorous quality checks, including:

  • Dimensional inspection.
  • Material composition testing.
  • Surface finish evaluation.
  • Hydrostatic and pressure testing.

Our dedication to quality ensures these components deliver optimal performance in the most challenging conditions.

For more information or to discuss your specific requirements, feel free to contact us. Haihao Group is committed to providing industry-leading pipeline solutions tailored to your needs. Email:sales@haihaogroup.com

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