ASME/ANSI B16.47 Series A Blind Flanges

Our company provides ASME/ANSI B16.47 Series A Blind Flanges.

ASME/ANSI B16.47 Flange Series A Blind Flanges are a type of blind flange that conforms to the requirements of the ASME/ANSI B16.47 Series A standard. This standard covers large-diameter steel flanges that range from NPS 26 through NPS 60 (nominal pipe size), and are designed for use in high-pressure and high-temperature applications.

  • ASME B16.47 Series A Blind Flange  Class 150-900 Series A – 26″to 60″
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ASME/ANSI B16.47 Series A Blind Flanges

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ASME/ANSI B16.47 Class 150 Series A Blind Flanges

(a)All dimensions are in inches.

(b)These flanges will be furnished with a 1/16″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Nominal Pipe SizeOutside Diameter (O)Bolt Circle (W)Raised Face Diameter (R)Number of HolesDiameter of HolesMinimum Thickness (T)Approximate Weight (lbs)
2634.2531.7529.50241.382.69702
2836.5034.0031.50281.382.81833
3038.7536.0033.75281.382.94982
3241.7538.5036.00281.623.191238
3443.7540.5038.00321.623.251384
3646.0042.7540.25321.623.561676
3848.7545.2542.25321.623.441819
4050.7547.2544.25361.623.562040
4253.0049.5047.00361.623.812380
4455.2551.7549.00401.624.002715
4657.2553.7551.00401.624.062961
4859.5056.0053.50441.624.253350
5061.7558.2555.50441.884.383716
5264.0060.5057.50441.884.564156
5466.2562.7559.50441.884.754639
5668.7565.0062.00481.884.885130
5871.0067.2564.00481.885.065675
6073.0069.2566.00521.885.196155

ASME/ANSI B16.47 Class 300 Series A Blind Flanges

(a)All dimensions are in inches.

(b)These flanges will be furnished with a 1/16″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Nominal Pipe SizeOutside Diameter (O)Bolt Circle (W)Raised Face Diameter (R)Number of HolesDiameter of HolesMinimum Thickness (T)Approximate Weight (lbs)
2638.2534.5029.50281.753.311079
2840.7537.0031.50281.753.561315
3043.0039.2533.75281.883.751545
3245.2541.5036.00282.003.941795
3447.5043.5038.00282.004.122068
3650.0046.0040.25322.124.382435
3846.0043.0040.50321.624.252001
4048.7545.5042.75321.754.502380
4250.7547.5044.75321.754.692689
4453.2549.7547.00321.884.883079
4655.7552.0049.00282.005.063500
4857.7554.0051.25322.005.253896
5060.2556.2553.50322.125.504442
5262.2558.2555.50322.125.694906
5465.2561.0057.75282.386.005684
5667.2563.0059.75282.386.066099
5869.2565.0062.00322.386.256669
6071.2567.0064.00322.386.447274

ASME/ANSI B16.47 Class 400 Series A Blind Flanges

(a)All dimensions are in inches.

(b)These flanges will be furnished with a 1/4″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Nominal Pipe SizeOutside Diameter (O)Bolt Circle (W)Raised Face Diameter (R)Number of HolesDiameter of HolesMinimum Thickness (T)Approximate Weight (lbs)
2638.2534.5029.50281.883.881263
2840.7537.0031.50282.004.121520
3043.0039.2533.75282.124.381802
3245.2541.5036.00282.124.562075
3447.5043.5038.00282.124.812415
3650.0046.0040.25322.125.062815
3847.5044.0040.75321.884.882450
4050.0046.2543.00322.005.122849
4252.0048.2545.00322.005.253160
4454.5050.5047.25322.125.503635
4656.7552.7549.50362.125.754120
4859.5055.2551.50282.386.004725
5061.7557.5053.62322.386.255303
5263.7559.5055.62322.386.445823
5467.0062.2557.88282.626.756742
5669.0064.2560.12322.626.947352
5871.0066.2562.12322.627.127986
6074.2569.0064.38322.887.449126

ASME/ANSI B16.47 Class 600 Series A Blind Flanges

(a)All dimensions are in inches.

(b)These flanges will be furnished with a 1/16″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Nominal Pipe SizeOutside Diameter (O)Bolt Circle (W)Raised Face Diameter (R)Number of HolesDiameter of HolesMinimum Thickness (T)Approximate Weight (lbs)
2640.0036.0029.50282.004.941760
2842.2538.0031.50282.125.192061
3044.5040.2533.75282.125.502423
3247.0042.5036.00282.385.812858
3449.0044.5038.00282.386.063237
3651.7547.0040.25282.626.383800
3850.0045.7541.50282.386.123405
4052.0047.7543.75322.386.383838
4255.2550.5046.00282.626.754585
4457.2552.5048.25322.627.005105
4659.5054.7550.25322.627.315758
4862.7557.5052.50322.887.696737
5065.7560.0054.50283.128.007695
5267.7562.0056.50323.128.258425
5470.0064.2558.75323.128.569333
5673.0066.7560.75323.388.8810,530
5875.0068.7563.00323.389.1211,414
6078.5071.7565.25283.629.5613,108

ASME/ANSI B16.47 Class 900 Series A Blind Flanges

(a)All dimensions are in inches.

(b)These flanges will be furnished with a 1/4″ raised face unless otherwise specified. For more alternate flange facings, please click here!

Nominal Pipe SizeOutside Diameter (O)Bolt Circle (W)Raised Face Diameter (R)Number of HolesDiameter of HolesMinimum Thickness (T)Approximate Weight (lbs)
2642.7537.5029.50202.886.312565
2846.0040.2531.50203.126.753178
3048.5042.7533.75203.127.183759
3251.7545.5036.00203.387.624541
3455.0048.2538.00203.628.065425
3657.5050.7540.25203.628.446210
3857.5050.7543.25203.628.506253
4059.5052.7545.75243.628.816940
4261.5054.7547.75243.629.127675
4464.8857.6250.00243.889.568955
4668.2560.5052.50244.1210.0610,426
4870.2562.5054.50244.1210.3811,398

ASME/ANSI B16.47 Flange Series A Blind Flanges are a type of blind flange that conform to the requirements of the ASME/ANSI B16.47 Series A standard. This standard covers large diameter steel flanges that range from NPS 26 through NPS 60 (nominal pipe size), and are designed for use in high pressure and high-temperature applications.

Series A flanges are designed for use with raised face (RF) flanges, and are used in applications where the flange needs to be bolted to another flange, such as a valve or a piece of equipment. Series A blind flanges are used to seal off the end of a pipeline, and they provide a positive barrier that prevents fluid from entering or leaving the pipeline.

The ASME/ANSI B16.47 Series A standard specifies the dimensions, tolerances, materials, and testing requirements for these flanges. The standard specifies that the blind flange thickness must be equivalent to the thickness of a corresponding RF flange, and it also provides detailed dimensions for the bolt holes and other critical features of the flange.

One of the key benefits of Series A blind flanges is that they provide a safe and reliable seal for high-pressure and high-temperature pipelines. The flanges are designed to withstand extreme conditions, and they are often used in critical applications such as oil and gas pipelines, chemical processing, and power generation.

In addition to their strength and durability, Series A blind flanges are also easy to install and maintain. They can be quickly bolted onto the end of a pipeline, and they are designed to be easy to remove and replace as needed. This makes them an ideal solution for pipelines that require frequent maintenance or repair.

In summary, ASME/ANSI B16.47 Flange Series A Blind Flanges are a type of blind flange that conform to the requirements of the ASME/ANSI B16.47 Series A standard. They are designed for use in high-pressure and high-temperature applications and are commonly used in the oil and gas, chemical processing, and power generation industries. These flanges are strong, durable, and easy to install and maintain, making them an ideal solution for pipelines that require a reliable and long-lasting seal.

Here is a table outlining the specifications and characteristics of ASME/ANSI B16.47 Series A Blind Flanges:

Specification/FeatureDescription
StandardASME/ANSI B16.47 Series A Blind Flange.
TypeBlind Flange – A type of flange with no bore (opening) in the center, used to block off a pipe or vessel opening.
Pressure RatingAvailable in various pressure ratings, such as 150, 300, 600, 900, etc., depending on the application requirements.
Size RangeTypically available in a wide range of sizes to accommodate different pipe and equipment dimensions.
MaterialCan be manufactured from a variety of materials, including carbon steel, stainless steel, alloy steel, etc., chosen based on application requirements.
Facing TypeSeries A Blind Flanges typically have Raised Face (RF) facing, providing a reliable sealing surface.
Bolt Hole Quantity and DiameterThe number and diameter of bolt holes vary with flange size and pressure rating, facilitating flange connection.
Seal TypeSeries A Blind Flanges commonly use gaskets or O-rings for sealing.
Performance CharacteristicsKnown for their high-pressure-bearing capacity, durability, and suitability for critical applications.
Application AreasWidely used in industries such as oil and gas, petrochemical, power generation, and more for sealing off pipe or vessel openings.
Manufacturing StandardsManufactured in compliance with ASME/ANSI B16.47 Series A standard and relevant ASME codes.
ASME/ANSI B16.47 Series A Blind Flanges Main Features and Specifications Table

This table provides a comprehensive overview of ASME/ANSI B16.47 Series A Blind Flanges, including their specifications, characteristics, and application areas. Specific requirements may vary depending on the chosen flange size, pressure rating, and material.

Required Fasteners:

The fastener quality requirement for ASME B16.47 Series A flanges is less than for Series A. Class 150 series A flange needs 28 bolts with sizes of 1-1/4-inch diameter to install. The total number of fasteners for ASME B16.47 Series B flanges is higher than for Series A. For class 150 Series B flange needs 44 bolts with a diameter of 3/ 4 inches diameter to install. The smaller bolt circle width affects the movement of the flange after installation.

Types:

Series A and Series B standards include blind flanges as well as weld neck flanges in raised face type (RF). But Series A illustrates ring type joint (RTJ) flanges with the different classes such as from Class 300 to Class 900.

Cost:

The cost of ASME B16.47 Series A flanges is more than ASME B16.47 Series B flanges.

Use:

Series A flanges are perfect for many piping end users for the new pipeline or connections. Series B flanges are perfect for refurbishment or replacement work and also for non-critical piping applications. In industry, Series A flanges are suitable for all complex applications, but Series B flanges are only suitable for easy applications.

Weight of Flange:

ASME B16.47 Series A flanges are heavier, and hence they can so exert more extra weight on piping supports. The weight of ASME B16.47 Series B flanges is comparatively less and therefore cannot sustain in high load.

Pressure class :

This unique pressure class is available in ASME B16.47 Series B flanges but not available in ASME B16.47 Series A flanges.

Dimensions:

The dimension of Series A flanges is larger because the bolt circle diameter, flange outer diameter, bolt diameter, flange thickness, etc., are larger. But Series A flanges are compact in dimension as compared to series A flanges.

Alternative designations:

In the beginning, ASME B16.47 Series A carbon steel flanges were identified as MSS SP 44 flanges, and ASME B16.47 Series B flanges were recognized as API 605 flanges.

ASME B16. 47(Large Diameter Steel Flanges) is a standard for large-diameter steel pipe flanges sized from NPS 26 through NPS 60. The latest version provides dimensions and ratings in both metric and inch units. The ASME B16.

ASME B16 47 Series A flanges are thicker, heavier, and stronger than their Series B counterparts. They also can often handle more external loading than Series B. Series A flanges tend to be more costly than Series B flanges.

Flanges to ISO 7005 are internationally standardized. This standard series comprises DIN flanges (PN 2.5; 6; 10; 16; 25 and 40) and ASME flanges. This standard, however, also specifies DN and PN designations for ASME flanges (PN 20; 50; 110; 150; 250, and 420).

The blind flange is basically a flange that does not have a hub or a boring center. Blind flanges have the face thickness of a flange, a matching face type, and a similar bolting pattern. Blind flanges can also be used to seal a nozzle opening on a pressure vessel.

ANSI Flanges are manufactured based on standards developed by organizations and ASME Flanges are based on codes and standards for mechanical devices. The ANSI Flanges are designed based on approx. 9500 standards whereas ASME Flanges are manufactured on 600 codes and standards for different mechanical devices.

the American National Standards Institute, ANSI ratings are a set of standards created by the American National Standards Institute to designate the pressure-temperature ratings of pipe flanges.