ASA 150 Flange Chart

ASA 150 Flange Chart

Table of Contents

  • What is an ASA 150# Flange?
  • ASA 150 Class Flange Specifications
  • ASA 150 Flange Dimensions
  • ASA 150 Flange Pressure Rating
  • ASA 150 RF Slip-On Flanges Thickness Chart
  • MS Flange ASA 150 PCD Chart
  • ASA 150 Class Flange Weight Chart
  • Importance of ASA 150# Flanges
  • Applications of ASA 150 Standard Flanges
  • Full Form of ASA Flange
  • ASA 150 vs ANSI 150
  • Advantages of ASA 150 LB Flanges
  • Limitations of ASA 150 Flange Standards

What is an ASA 150# Flange?

An ASA 150# flange is designed to withstand a pressure of 150 pounds per square inch. This specification is based on the American National Standard Institute's B16.5 standard. Primarily used for low to medium-pressure applications, these flanges are integral to many industries.

ASA 150 Class Flange Specifications

Class 150
Size Range
  • 1/2" to 48"
  • DN15 to DN250
Type
  • Slip-on
  • Weld neck
  • Blind
  • Threaded
Standard ASME / ANSI B16.5
Materials
  • Carbon Steel
  • Stainless Steel
Markings
  • Logo
  • Grade
  • Face Type
  • Class
  • Origin
Face Type
  • Flat
  • Raised
  • Lap Joint
  • T&G
  • Ring Joint
  • M&F
MTC EN 10204 3.1/3.2

Check Dimensions and Weight of ASA 150 LB Flange

The following chart is particularly useful for engineers and professionals working in construction. It aids in accurately calculating the weight of the flange, ensuring precise budgeting and planning for projects.

ASA 150 Flange Dimensions

NPS in inches 1 1½ 2 2½ 3 3½ 4 5 6 8 10 12 14 16 18 20 24
Bolt Circle Diameter in inches 3¹⁄₈ 3⁷⁄₈ 4¾ 5½ 6 7 7½ 8½ 9½ 11¾ 14¼ 17 18¾ 21¼ 22¾ 25 29½
Number of Bolts 4 4 4 4 4 8 8 8 8 8 12 12 12 16 16 20 20
Bolt Diameter in inches ¹⁄₈ ½ 5/₈ 5/₈ 5/₈ 5/₈ 5/₈ ¾ ¾ ¾ ⁷⁄₈ ⁷⁄₈ 1 1 1¹⁄₈ 1¹⁄₈ 1¼
Bolt Hole Diameter in inches ⁵⁄8 5⁄₉ ¾ ¾ ¾ ¾ ¾ ⁷⁄₈ ⁷⁄₈ ⁷⁄₈ 1 1 1¹⁄₈ 1¹⁄₈ 1¼ 1¼ 1³⁄₈
Flange Outer Diameter in inches 4½ 5 6 7 7½ 8½ 9 10 11 13½ 16 19 21 23½ 25 27½ 32
Weight in Lbs 2 3 5 8 10 12 13 15 19½ 30 41 65 85 93 120 155 210

ASA150 RF Slip-On Flanges Can Withstand Maximum Pressure of 150 PSI

These flanges are capable of handling up to 150 PSI of pressure before they risk failure or damage. Understanding the pressure rating is critical as exceeding it could result in catastrophic consequences like cracks or leaks.

ASA 150 Flange Pressure Rating

Temperature (°F) 2500 1500 900 600 400 300 150
1000 715 430 255 170 115 85 20
950 1145 685 410 275 185 135 35
900 1915 1150 690 460 305 230 50
850 2655 1595 955 640 425 320 65
800 3430 2055 1235 825 550 410 80
750 4230 2535 1520 1015 675 505 95
700 4425 2655 1590 1060 710 530 110
650 4575 2745 1650 1100 730 550 125
600 4730 2840 1705 1135 755 570 140
500 5025 3015 1810 1205 805 605 170
300 5450 3270 1965 1310 870 655 230
400 5280 3170 1900 1265 845 635 200
200 5655 3395 2035 1360 905 680 260
100 6170 3705 2220 1480 985 740 285

ASA Flanges Are Available in Sizes Ranging from 1 Inch to 12 Inches

These flange sizes are crucial for manufacturing purposes. They ensure that the flange can securely connect to different pipe sizes without causing leaks or damaging the system. For example, if a flange is too large, it might not fit properly, leading to potential issues during installation.

ASA 150 RF Slip-On Flanges Thickness Chart

Size NB Outer Diameter of Flange Thickness
Inches Millimeters Millimeters
15 85 15
20 99 13
25 109 15
32 118 16
40 128 18
50 153 19.5
65 176 23.9
80 191 24
100 226 24
125 259 24
150 275 26
200 340 28
250 403 31
300 480 32
350 532 35
400 592 37
450 630 40
500 690 43
Refer to PCD Chart and Sizes of MS Flange ASA 150

PCD stands for Pitch Circle Diameter, representing the diameter of the circle passing through the wheel bolts, studs, or wheel rim holes. This measurement is vital for controlling flow rates in valves and piping systems.

MS Flange ASA 150 PCD Chart

Pipe NB in Inches Flange OD in Inches Bolt PCD in Inches Number of Bolts Bolt Size in Inches
1/2 3 1/2 2 3/8 4 1/2
1 4 1/4 3 1/8 4 1/2
2 6 4 3/4 4 5/8
4 9 7 1/2 8 5/8
6 11 9 1/2 8 3/4
8 13 1/2 11 3/4 8 3/4
10 16 14 1/4 12 7/8
12 19 17 12 7/8
14 21 18 3/4 12 1

ASA 150 Class Flange Weight Chart

NPS Dimension Weight in Kilograms
DN in Millimeters NPS in Inches Thickness Millimeters Weld Neck Socket Weld Blind
15 1/2 11.2 88.9 .5 .4 .4
20 3/4 12.7 98.6 .7 .6 .6
25 1 14.2 108 1 .8 .9
32 1 1/4 15.7 117.3 1.3 1 1.2
40 1 1/2 17.5 127 1.7 1.3 1.5
50 2 19.1 152.4 2.6 2.1 2.4
65 2 1/2 22.4 177.8 4.1 3.3 3.9
80 3 23.9 19.5 4.9 3.9 4.9
90 3 1/2 23.9 215.9 6.1 4.8 6.2
100 4 23.9 228.6 6.8 5.3 7
125 5 23.9 254 8.6 6.1 8.6
150 6 25.4 279.4 1.6 7.5 11.3
200 8 28.4 342.9 17.6 12.1 19.6
250 10 3.2 406.4 24 16.5 28.6
300 12 31.8 482.6 36.5 26.2 43.2
350 14 35.1 533.4 48.4 34.6 58.1
400 16 36.6 596.9 6.6 44.8 76.1
450 18 39.6 635 68.3 48.9 93.7
500 20 42.9 698.5 84.5 61.9 122
600 24 47.8 812.8 115 86.9 185

Importance of ASA 150# Flanges

Importance of ASA 150# Flanges

ASA 150 Standard Flanges are Widely Used in the USA and Define Size, Pressure Rating, and Dimensions

These flanges comply extensively with the American National Standards Institute B16.5 standard, which primarily specifies the size, pressure rating, and overall dimensions for connecting pipes in piping systems across various applications.

Applications of ASA 150 Standard Flanges

  • Power Generation
  • Chemical Equipment
  • Pulp and Paper Industry
  • Gas Processing
  • Heat Exchangers
  • Sea Water Equipment
  • Pharmaceuticals
  • Offshore Oil Drilling Companies
  • Condensers
ASA 150 Standard Flange Application

Full Form of ASA Flange

ASA Flange: American Standard Association Flange

ASA 150 vs ANSI 150

Description ANSI 150 ASA 150
Standard American National Standards Institute American Standard Association
Pressure Rating #150 #150
Temperature Range Standard temperature ranges based on materials Vary based on the design and material
Material Carbon steel, Stainless steel, etc. Based on the application
Bolt Pattern Defined bolt pattern with specific dimensions Same as ANSI 150
Gasket Dimensions Standard dimensions Same as ANSI 150
Historical Context Modern standard Older standard

Advantages of ASA 150 LB Flanges

  • Standardized dimensions
  • Suitable for moderate pressures
  • Easy installation
  • Reduces errors
  • Cost-effective
  • Simplifies maintenance
  • Adheres to ASME standards
  • Excellent for medium temperature ranges
  • Offers better sealing options

Limitations of ASA 150 Flange Standards

  • Limited pressure ratings
  • Not ideal for high-pressure applications
  • Material limitations
  • Requires additional documentation
  • Limited design flexibility
  • Not suitable for extreme temperatures

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June 05, 2025