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 the ASA 150# Flanges
  • ASA 150 Standard Flange Application
  • ASA Flange Full Form
  • ASA 150 vs ANSI 150
  • ASA 150 LB flange Advantages
  • ASA 150 Flange Standard Disadvantages

What is an ASA 150# Flange?

The pressure rating of an ASA 150# flange is 150 pounds per square inch. This specification is based on the American National Standard Institute B16.5 standard and is commonly used for low to medium pressure applications in industrial piping systems.

ASA 150 Class Flange Specifications

Class 150
Size
  • 1/2″ to 48″
  • DN15 to DN250
Type
  • Slip on
  • Weld neck
  • Blind
  • Threaded
Standard ASME / ANSI B16.5
Material
  • Carbon Steel
  • Stainless Steel
Marking
  • 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 chart provided below is a useful tool for engineers and professionals working in construction and piping projects. It helps in accurately calculating the weight of the flange, which is essential for planning and cost estimation. Understanding these details ensures proper material selection and structural integrity.

ASA 150 Flange Dimensions

NPS in inch 1 1½ 2 2½ 3 3½ 4 5 6 8 10 12 14 16 18 20 24
Dia. of Bolt Circle in inch 3¹⁄₈ 3⁷⁄₈ 4¾ 5½ 6 7 7½ 8½ 9½ 11¾ 14¼ 17 18¾ 21¼ 22¾ 25 29½
No. of Bolts 4 4 4 4 4 8 8 8 8 8 12 12 12 16 16 20 20
Dia. of Bolts in inch 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
Dia. of Bolt Holes in inch 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 OD
in inch		 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 designed to handle up to 150 psi before failure or damage occurs. Knowing this pressure rating is crucial as exceeding it could lead to serious consequences, including cracks or system failure.

ASA 150 Flange Pressure Rating

Temperature (in °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 size range of 1 inch to 12 inch

The size range of ASA flanges is important for manufacturing and ensuring compatibility with various pipe sizes and fittings. Choosing the correct size is essential to avoid leaks, damage, or improper installation. This ensures smooth operation and long-term reliability in piping systems.

ASA 150 RF Slip-On Flanges Thickness Chart

Size NB Outer diameter of Flange Thickness
Inch millimetre millimetre
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 PCD chart and sizes of MS flange ASA 150

PCD stands for Pitch Circle Diameter, which is the distance between the centers of the bolt holes on a flange. It is a critical dimension for ensuring that the flange aligns properly with the mating components. Accurate PCD measurements are essential for secure and leak-free connections in piping systems.

MS Flange ASA 150 PCD Chart

Pipe NB in inch Flange OD in inch Bolt PCD in inch No. of Bolts Bolt Size in inch
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 kilogram
DN in millimetre NPS in Inch Thickness millimetre Weldneck 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 the ASA 150# Flanges

Importance of the ASA 150# Flanges

ASA 150 Standard Flange are widely used in USA and it defines the size, pressure rating and dimensions

This flange is extensively compliant with the American National Standard Institute B16.5 standard, which primarily defines the flange size, pressure rating, and overall dimensions for attaching pipes in the piping system for various applications. It ensures consistency and compatibility across different industries.

ASA 150 Standard Flange Application

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

ASA Flange Full Form

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

ASA 150 LB flange Advantages

  • Standard dimension
  • Moderate pressures
  • Simple installation
  • Reduce errors
  • Less expensive
  • Simple maintenance
  • ASME standards
  • Excellent for medium temperature ranges
  • Better sealing options

ASA 150 Flange Standard Disadvantages

  • Limited pressure ratings
  • Not suitable for high pressure
  • Material limitations
  • Require additional documentation
  • Limited design
  • Not be suitable for low or high temperature

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