Orifice Flange
ASME B16.36 Stainless Steel Opening Flange and Jack Screw Flanges manufacturer in India.
What Is ASME B16.36?
ASME B16.36 is often abbreviated and referred to as an ORFF. This threaded orifice flange e for metering the volumetric flow rate of liquids and gasses through a pipe. Two orifice flanges together are known as orifice flange union. Each 150# orifice flange comes with two pipe taps, which are meant for measuring the drop in pressure of the flow through an orifice plate. Typically, orifice plates are not available with the weld neck orifice flange and the size of the plates are based on the requirements of the process or the application for which it has to be used. Two jack screws can be used to spread the orifice flange apart in order to change the rtj orifice plate. These flanges are normally available and produced in our factory in the form of weld neck, slip-on, and threaded flanges. These 600# orifice flange dimensions have a raised face.
Table of contents
- Why Are Regular Orifice Flanges Installed In A Pipe?
- What Is Use Of Orifice Flange? ASME B16.36 Dimensions
- ASME B16.36 Orifice Flange Dimensions
- Class 300 Orifice Flange Dimensions
- Class 600 Orifice Flange Dimensions
- Class 900 Orifice Flange Dimensions
- Class 1500 Orifice Flange Dimensions
- Class 2500 Orifice Flange Dimensions ANSI B16.36 Bolt Chart
- Class 300 Orifice Flange Bolt Chart
- Class 600 Orifice Flange Bolt Chart
- Class 900 Orifice Flange Bolt Chart
- Class 1500 Orifice Flange Bolt Chart
- Class 2500 Orifice Flange Bolt Chart
- Standard Specification Of ASME B16.36
- ASTM A105 Orifice Flange Price List
- ASME B16 36 Pressure Rating
- Carbon Steel Orifice Flange Weight Chart
- Stainless Steel Orifice Flange Thickness
- Jack Screw Sizes For Orifice Flanges
- ANSI B16.36 Orifice Flange Gasket
- Orifice Flange Union Dimensions
- Weld Neck Orifice Flange Dimensions
- Orifice Plate Flange Dimensions
- DIN 19214 Orifice Flange Dimensions
- We Provide Multiple Type Of ASME B16.36 Orifice Flange

Why Are Regular Orifice Flanges Installed In A Pipe?
Carbon steel orifice flange is always installed in a straight run of the pipe. The installation has been fashioned in a straight manner in order to avoid turbulence at the plate. As a rule of thumb, an ansi b16.36 orifice flange dimensions has ten diameters of straight pipe upstream as well as five diameters of pipe downstream. Orifice flanges manufacturers in India note that these alloy grades have important properties such as enhanced resistance to corrosion, higher tensile strength, good weldability as well as good formability.
What Is Use Of Orifice Flange?
For instance, alloy grade 316 Stainless Steel Orifice Flanges, which has superior resistance to alloy grade 304 and is referred to as a marine grade metal because of its enhanced resistance to seawater, brine and marine environments with chlorine ions. Besides alloy grade 316 carbon steel orifice flanges tend to offer higher resistance to pitting as well as crevice corrosion in chloride environments.
ASME B16.36 Orifice Flange Dimensions

Class 300 Orifice Flange Dimensions
Normal Pipe Size | HUB DIA |
Daimeter Of RF |
O.D. | Minimum THK Flanges |
Height Flanges |
HUB Daimeter |
Daimeter Of TAB |
A | R | O | T | H | X | Tg | |
1 | 33.4 | 50.8 | 125 | 36.6 | 81 | 54 | 6.4 |
1½ | 48.3 | 73.0 | 155 | 36.6 | 84 | 70 | 6.4 |
2 | 60.3 | 92.1 | 165 | 36.6 | 84 | 84 | 6.4 |
2½ | 73.0 | 104.8 | 190 | 36.6 | 87 | 100 | 6.4 |
3 | 88.9 | 127.0 | 210 | 36.6 | 87 | 117 | 9.5 |
4 | 114.3 | 157.2 | 255 | 36.6 | 90 | 146 | 12.7 |
6 | 168.3 | 215.9 | 320 | 36.6 | 98 | 206 | 12.7 |
8 | 219.1 | 269.9 | 380 | 39.7 | 110 | 260 | 12.7 |
10 | 273.0 | 323.8 | 445 | 46.1 | 116 | 321 | 12.7 |
12 | 323.8 | 381.0 | 520 | 49.3 | 129 | 375 | 12.7 |
14 | 355.6 | 412.8 | 585 | 52.4 | 141 | 425 | 12.7 |
16 | 406.4 | 469.9 | 650 | 55.6 | 144 | 483 | 12.7 |
18 | 457.0 | 533.4 | 710 | 58.8 | 157 | 533 | 12.7 |
20 | 508.0 | 584.2 | 775 | 62.0 | 160 | 587 | 12.7 |
24 | 610.0 | 692.2 | 915 | 68.3 | 167 | 702 | 12.7 |
Class 600 Orifice Flange Dimensions
Normal Pipe Size | Daimeter Of RF |
O.D. | Minimum THK Flanges |
Height Flanges |
HUB Daimeter |
HUB DIA |
Daimeter Of TAB |
R | O | T | H | X | A | Tg | |
1 | 50.8 | 125 | 36.6 | 81 | 54 | 33.5 | 6.4 |
1½ | 73.0 | 155 | 36.6 | 84 | 70 | 48.3 | 6.4 |
2 | 92.1 | 165 | 36.6 | 84 | 84 | 60.3 | 6.4 |
2½ | 104.8 | 190 | 36.6 | 87 | 100 | 73.0 | 6.4 |
3 | 127.0 | 210 | 36.6 | 87 | 117 | 88.9 | 9.5 |
4 | 157.2 | 275 | 38.1 | 102 | 152 | 114.3 | 12.7 |
6 | 215.9 | 355 | 47.7 | 117 | 222 | 168.3 | 12.7 |
8 | 269.9 | 420 | 55.6 | 133 | 273 | 219.1 | 12.7 |
10 | 323.8 | 510 | 63.5 | 152 | 343 | 273.0 | 12.7 |
12 | 381.0 | 560 | 66.7 | 156 | 400 | 323.8 | 12.7 |
14 | 412.8 | 605 | 69.9 | 165 | 432 | 355.6 | 12.7 |
16 | 469.9 | 685 | 76.2 | 178 | 495 | 406.4 | 12.7 |
18 | 533.4 | 745 | 82.6 | 184 | 546 | 457.2 | 12.7 |
20 | 584.2 | 815 | 88.9 | 190 | 610 | 508.0 | 12.7 |
24 | 692.2 | 940 | 101.6 | 203 | 718 | 609.6 | 12.7 |
Class 900 Orifice Flange Dimensions
Normal Pipe Size | Daimeter Of RF |
O.D. | Minimum THK Flanges |
Height Flanges |
HUB Daimeter |
HUB DIA |
Daimeter Of TAB |
R | O | T | H | X | A | Tg | |
1 | 50.8 | 125 | 36.6 | 81 | 54 | 33.5 | 6.4 |
1½ | 73.0 | 155 | 36.6 | 84 | 70 | 48.3 | 6.4 |
2 | 92.1 | 165 | 36.6 | 84 | 84 | 60.3 | 6.4 |
2½ | 104.8 | 190 | 36.6 | 87 | 100 | 73.0 | 6.4 |
3 | 127.0 | 240 | 38.1 | 102 | 127 | 88.9 | 9.5 |
4 | 157.2 | 290 | 44.5 | 114 | 159 | 114.3 | 12.7 |
6 | 215.9 | 380 | 55.6 | 140 | 235 | 168.3 | 12.7 |
8 | 269.9 | 470 | 63.5 | 162 | 298 | 219.1 | 12.7 |
10 | 323.8 | 545 | 69.9 | 184 | 368 | 273.0 | 12.7 |
12 | 381.0 | 610 | 79.4 | 200 | 419 | 323.8 | 12.7 |
14 | 412.8 | 640 | 85.8 | 213 | 451 | 355.6 | 12.7 |
16 | 469.9 | 705 | 88.9 | 216 | 508 | 406.4 | 12.7 |
18 | 533.4 | 785 | 101.6 | 229 | 565 | 457.2 | 12.7 |
20 | 584.2 | 855 | 108.0 | 248 | 622 | 508.0 | 12.7 |
24 | 692.2 | 1040 | 139.7 | 292 | 749 | 609.6 | 12.7 |
Class 1500 Orifice Flange Dimensions
Normal Pipe Size | Daimeter Of RF |
O.D. | Minimum THK Flanges |
Height Flanges |
HUB Daimeter |
HUB DIA |
Daimeter Of TAB |
R | O | T | H | X | A | Tg | |
1 | 50.8 | 150 | 38.1 | 83 | 52 | 33.5 | 6.4 |
1½ | 73.0 | 180 | 38.1 | 89 | 70 | 48.3 | 6.4 |
2 | 92.1 | 215 | 38.1 | 102 | 105 | 60.3 | 6.4 |
2½ | 104.8 | 245 | 41.3 | 105 | 124 | 73.0 | 6.4 |
3 | 127.0 | 265 | 47.7 | 117 | 133 | 88.9 | 9.5 |
4 | 157.2 | 310 | 54.0 | 124 | 162 | 114.3 | 12.7 |
6 | 215.9 | 395 | 82.6 | 171 | 229 | 168.3 | 12.7 |
8 | 269.9 | 485 | 92.1 | 213 | 292 | 219.1 | 12.7 |
10 | 323.8 | 585 | 108.0 | 254 | 368 | 273.0 | 12.7 |
12 | 381.0 | 675 | 123.9 | 283 | 451 | 323.8 | 12.7 |
14 | 412.8 | 750 | 133.4 | 298 | 495 | 355.6 | 12.7 |
16 | 469.9 | 825 | 146.1 | 311 | 552 | 406.4 | 12.7 |
18 | 533.4 | 915 | 162.0 | 327 | 597 | 457.2 | 12.7 |
20 | 584.2 | 985 | 177.8 | 356 | 641 | 508.0 | 12.7 |
24 | 692.2 | 1170 | 203.2 | 406 | 762 | 609.6 | 12.7 |
Class 2500 Orifice Flange Dimensions
Normal Pipe Size | Daimeter Of RF |
O.D. | Minimum THK Flanges |
Height Flanges |
HUB Daimeter |
HUB DIA |
Daimeter Of TAB |
R | O | T | H | X | A | Tg | |
1 | 50.8 | 160 | 38.1 | 92 | 57 | 33.5 | 6.4 |
1½ | 73.0 | 205 | 44.5 | 111 | 79 | 48.3 | 6.4 |
2 | 92.1 | 235 | 50.8 | 127 | 95 | 60.3 | 6.4 |
2½ | 104.8 | 265 | 57.2 | 143 | 114 | 73.0 | 6.4 |
3 | 127.0 | 305 | 66.7 | 168 | 133 | 88.9 | 9.5 |
4 | 157.2 | 355 | 76.2 | 190 | 165 | 114.3 | 12.7 |
6 | 215.9 | 485 | 108.0 | 273 | 235 | 168.3 | 12.7 |
8 | 269.9 | 550 | 127.0 | 318 | 305 | 219.1 | 12.7 |
10 | 323.8 | 675 | 165.1 | 419 | 375 | 273.0 | 12.7 |
12 | 381.0 | 760 | 184.2 | 464 | 441 | 323.8 | 12.7 |
Class 300 Orifice Flange Bolt Chart

Normal Pipe | CIRCLE OF BOLT |
NUMBER OF BOLTS |
DIAMETER OF HOLES |
DIAMETER STUD BOLT |
LENGTH Of STUD BOLT |
1 | 88.9 | 4 | 11/16 | 5/8 | 125 |
1½ | 114.3 | 4 | 13/16 | 3/4 | 135 |
2 | 127.0 | 8 | 11/16 | 5/8 | 125 |
2½ | 149.2 | 8 | 13/16 | 3/4 | 135 |
3 | 168.3 | 8 | 13/16 | 3/4 | 135 |
4 | 200.0 | 8 | 13/16 | 3/4 | 135 |
6 | 269.9 | 12 | 7/8 | 3/4 | 135 |
8 | 330.2 | 12 | 1 | 7/8 | 145 |
10 | 387.4 | 16 | 1.1/8 | 1 | 165 |
12 | 450.8 | 16 | 1¼ | 1.1/8 | 180 |
14 | 514.4 | 20 | 1¼ | 1.1/8 | 185 |
16 | 571.5 | 20 | 1.3/8 | 1¼ | 195 |
18 | 628.6 | 24 | 1.3/8 | 1¼ | 205 |
20 | 685.8 | 24 | 1.3/8 | 1¼ | 215 |
24 | 812.8 | 24 | 1.5/8 | 1½ | 240 |
Notes:
- Dimensions are in mm, except for bolts holes or bolt.
- Height of (RF) in CLASS 300 is 2 millimeter.
- All other dimensions are in accordance with ANSI/ASME B16.5.
- RTJ flanges larger than (Normal Pipe Size) 3 will require angular meter taps.
Class 600 Orifice Flange Bolt Chart
Normal Pipe | CIRCLE OF BOLT |
NUMBER OF BOLTS |
DIAMETER OF HOLES |
DIAMETER STUD BOLT |
LENGTH Of STUD BOLT |
1 | 88.9 | 4 | 11/16 | 5/8 | 125 |
1½ | 114.3 | 4 | 13/16 | 3/4 | 135 |
2 | 127.0 | 8 | 11/16 | 5/8 | 125 |
2½ | 149.2 | 8 | 13/16 | 3/4 | 135 |
3 | 168.3 | 8 | 13/16 | 3/4 | 135 |
4 | 215.9 | 8 | 1 | 7/8 | 150 |
6 | 292.1 | 12 | 1.1/8 | 1 | 180 |
8 | 349.2 | 12 | 1¼ | 1.1/8 | 195 |
10 | 431.8 | 16 | 1.3/8 | 1¼ | 220 |
12 | 489.0 | 20 | 1.3/8 | 1¼ | 230 |
14 | 527.0 | 20 | 1½ | 1.3/8 | 240 |
16 | 603.2 | 20 | 1.5/8 | 1½ | 260 |
18 | 654.0 | 20 | 1¾ | 1.5/8 | 280 |
20 | 723.9 | 24 | 1¾ | 1.5/8 | 300 |
24 | 838.2 | 24 | 2 | 1.7/8 | 335 |
Class 900 Orifice Flange Bolt Chart
Normal Pipe | CIRCLE OF BOLT |
NUMBER OF BOLTS |
DIAMETER OF HOLES |
DIAMETER STUD BOLT |
LENGTH Of STUD BOLT |
1 | 88.9 | 4 | 11/16 | 5/8 | 125 |
1½ | 114.3 | 4 | 13/16 | 3/4 | 135 |
2 | 127.0 | 8 | 11/16 | 5/8 | 125 |
2½ | 149.2 | 8 | 13/16 | 3/4 | 135 |
3 | 190.5 | 8 | 1 | 7/8 | 150 |
4 | 235.0 | 8 | 1¼ | 1.1/8 | 180 |
6 | 317.5 | 12 | 1¼ | 1.1/8 | 195 |
8 | 393.7 | 12 | 1½ | 1.3/8 | 230 |
10 | 469.9 | 16 | 1½ | 1.3/8 | 240 |
12 | 533.4 | 20 | 1½ | 1.3/8 | 260 |
14 | 558.8 | 20 | 1.5/8 | 1½ | 280 |
16 | 616.0 | 20 | 1¾ | 1.5/8 | 290 |
18 | 685.8 | 20 | 2 | 1.7/8 | 330 |
20 | 749.3 | 20 | 2.1/8 | 2 | 355 |
24 | 901.7 | 20 | 2 5/8 | 2½ | 445 |
Class 1500 Orifice Flange Bolt Chart
Normal Pipe | CIRCLE OF BOLT |
NUMBER OF BOLTS |
DIAMETER OF HOLES |
DIAMETER STUD BOLT |
LENGTH Of STUD BOLT |
1 | 101.6 | 4 | 1 | 7/8 | 150 |
1½ | 123.8 | 4 | 1.1/8 | 1 | 160 |
2 | 165.1 | 8 | 1 | 7/8 | 150 |
2½ | 190.5 | 8 | 1.1/8 | 1 | 165 |
3 | 203.2 | 8 | 1¼ | 1.1/8 | 185 |
4 | 241.3 | 8 | 1.3/8 | 1¼ | 205 |
6 | 317.5 | 12 | 1½ | 1.3/8 | 265 |
8 | 393.7 | 12 | 1¾ | 1.5/8 | 300 |
10 | 482.6 | 12 | 2 | 1.7/8 | 345 |
12 | 571.6 | 16 | 2.1/8 | 2 | 380 |
14 | 635.0 | 16 | 2 3/8 | 2¼ | 415 |
16 | 704.8 | 16 | 2 5/8 | 2½ | 450 |
18 | 774.7 | 16 | 2 7/8 | 2¾ | 500 |
20 | 831.8 | 16 | 3.1/8 | 3 | 545 |
24 | 990.6 | 16 | 3.5/8 | 3½ | 620 |
Class 2500 Orifice Flange Bolt Chart
Normal Pipe | CIRCLE OF BOLT |
NUMBER OF BOLTS |
DIAMETER OF HOLES |
DIAMETER STUD BOLT |
LENGTH Of STUD BOLT |
1 | 108.0 | 4 | 1 | 7/8 | 150 |
1½ | 146.0 | 4 | 1¼ | 1.1/8 | 180 |
2 | 171.4 | 8 | 1.1/8 | 1 | 185 |
2½ | 196.8 | 8 | 1¼ | 1.1/8 | 205 |
3 | 228.6 | 8 | 1.3/8 | 1¼ | 230 |
4 | 273.0 | 8 | 1.5/8 | 1½ | 260 |
6 | 368.3 | 8 | 2.1/8 | 2 | 350 |
8 | 438.2 | 12 | 2.1/8 | 2 | 385 |
10 | 539.8 | 12 | 2 5/8 | 2½ | 490 |
12 | 619.1 | 12 | 2 7/8 | 2¾ | 540 |
Standard Specification Of ASME B16.36
Material Specification Of : | ASME B16.36 Orifice Flange |
---|---|
Standard Cover : | pressure ratings & temperature ratings, materials, marking, dimensions, weight, tolerances, testing |
ASME B16.36 Assembly Consists: | Gaskets, Orifice Plate, Jacking Screws And Plugs Bolts, Nuts |
ASME B16.36 Available ASTM Grades: | ASTM A105 (Carbon Steel) ASTM A350 (Carbon Steel) ASTM A694 (Alloy Steel) ASTM 182 (Stainless Steel) |
ASME B16.36 Most Used Shape : | Socket Weld, Threaded Or Weld Neck |
ASME B16.36 Pressure Class : | Class 300 To 2500 |
ASME B16.36 Faces Type | Raised Faces (RF) And RTJ (Ring Type Joint) Facings |
Orifice Flange Use: | Heavy and light chemicals Petrochemicals Sewage treatment Water treatment and distribution Oil production and refining |
ASME B16.36 Also Call: | ORFF & Two Orifice Flanges Are Call Orifice Union |
Size Chart | DN15 (1/2") to DN1200 (48") |
Size Range | 15 Millimeter To 1500mm (1/2”- 60”) |
Orifice Flanges Standards | EN 1092-1, JIS, ASME B16.36, ASME B16.47, DIN |
Pressure Rating | Class 300 To Class 2500 |
ANSI B16.36 Marking Standard | Name of Manufacturer Schedule Type of Flange Facing Nominal Pipe Size Pressure Class ASME B16 Designation |
ASTM A105 Orifice Flange Price List | |||||
---|---|---|---|---|---|
Type Of Flanges | Size | Material | Class | Schedule | Price In India (INR) |
Orifice Flanges | 2" | ASTM A105 | Class 300 | Schedule 40 | 585.67 |
Orifice | 3" | ASTM A105 | Class 300 | Schedule 40 | 845.00 |
Orifice | 4" | ASTM A105 | Class 600 | Schedule 80 | 1380.00 |
Orifice | 6" | ASTM A105 | Class 600 | Schedule 80 | 2568.00 |
Orifice | 2" | ASTM A182 F304 | Class 300 | Schedule 40 | 1100.00 |
Orifice | 4" | ASTM A182 F304 | Class 300 | Schedule 40 | 2269.00 |
Orifice | 6" | ASTM A182 F304 | Class 300 | Schedule 40 | 3300.00 |
Orifice | 8" | ASTM A182 F304 | Class 300 | Schedule 40 | 4287.28 |
Orifice | 10" | ASTM A182 F304 | Class 300 | Schedule 40 | 5900.00 |
Please note this is an approx Price of Carbon Steel Orifice Flange coupling in Mumbai, India. For final Orifice Flanges Price List Please Call on 91 - 22 - 67437342 or drop an Email to info@rajtilakmetal.com

Orifice Plate Flange Weight Chart According to ASME B16.36, Contact US Today For Opening Flanges With Fast Delivery.
ASME B16 36 Pressure Rating
ASME B16.36 Pressure Pressure | |||||||
---|---|---|---|---|---|---|---|
Temperature (°C) | Class | ||||||
Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 | |
-29 - 38 | 19.8 | 51.7 | 68.9 | 103.4 | 155 | 259 | 431 |
50 | 19.5 | 51.7 | 68.9 | 103.4 | 155 | 259 | 431 |
100 | 17.7 | 51.5 | 68.7 | 103.0 | 155 | 258 | 429 |
150 | 15.8 | 50.2 | 66.8 | 100.3 | 151 | 251 | 418 |
200 | 13.8 | 48.6 | 64.8 | 97.2 | 146 | 243 | 405 |
250 | 12.1 | 46.3 | 61.7 | 92.7 | 139 | 232 | 386 |
300 | 10.2 | 42.9 | 57.0 | 85.7 | 129 | 214 | 357 |
325 | 9.3 | 41.4 | 55.0 | 82.6 | 124 | 207 | 344 |
350 | 8.4 | 40.0 | 53.4 | 80.0 | 120 | 200 | 334 |
375 | 7.4 | 37.8 | 50.4 | 75.7 | 114 | 189 | 315 |
400 | 6.5 | 34.7 | 46.3 | 69.4 | 104 | 174 | 290 |
425 | 5.5 | 28.8 | 38.4 | 57.5 | 86.3 | 144 | 240 |
450 | 4.6 | 23.0 | 30.7 | 46.0 | 69.0 | 115 | 192 |
475 | 3.7 | 17.1 | 22.8 | 34.2 | 51.3 | 85.4 | 142 |
500 | 2.8 | 11.6 | 15.4 | 23.2 | 34.7 | 57.9 | 96.5 |
538 | 1.4 | 5.9 | 7.9 | 11.8 | 17.7 | 29.5 | 49.2 |
Check Update Price List Of Carbon Steel Orifice Flanges And Get a Live Quote Now For ANSI B16.36 Opening Flanges.
Carbon Steel Orifice Flange Weight Chart
DN In inches | Dimension | ASME B16.36 Dimensional Sizes 1/2 inches to 2 1/2 inches | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
125 LBS 150 LBS | 300 LBS | 400 LBS | 600 LBS | 900 LBS | 1500 LBS | 2500 LBS | ||||||||||
inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | inches | millimeter | |||
1/2 | A | 3 1/2 | 88.9 | 3 3/4 | 95.2 | 3 3/4 | 95.2 | 3 3/4 | 95.2 | 4 3/4 | 121 | 4 3/4 | 121 | 5 1/4 | 133.4 | |
b | 7/16 | 11.1 | 9/16 | 14.3 | 9/16 | 14.3 | 9/16 | 14.3 | 7/8 | 22.2 | 7/8 | 22.2 | 1 3/16 | 30.2 | ||
D2 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | 1 3/8 | 34.9 | ||
D1 | 2 3/8 | 60.3 | 2 5/8 | 66.7 | 2 5/8 | 66.7 | 2 5/8 | 66.7 | 3 1/4 | 82.6 | 3 1/4 | 82.6 | 3 1/2 | 88.9 | ||
n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | 4 | 44 | ||
d | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | ||
3/4 | A | 3 7/8 | 98.4 | 4 5/8 | 117.5 | 4 5/8 | 117.5 | 4 5/8 | 117.5 | 5 1/8 | 130 | 5 1/8 | 130 | 5 1/2 | 139.7 | |
b | 1/2 | 12.7 | 5/8 | 15.9 | 5/8 | 15.9 | 5/8 | 15.9 | 1 | 25.4 | 1 | 25.4 | 1 1/4 | 31.8 | ||
D2 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | 1 11/16 | 42.9 | ||
D1 | 2 3/4 | 69.8 | 3 1/4 | 82.5 | 3 1/4 | 82.5 | 3 1/4 | 82.5 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 3 3/4 | 95.2 | ||
n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | - | 4 | 44 | ||
d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | ||
1 | A | 4 1/4 | 108 | 4 7/8 | 123.8 | 4 7/8 | 123.8 | 4 7/8 | 123.8 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 6 1/4 | 159 | |
b | 9/16 | 14.3 | 11/16 | 17.5 | 11/16 | 17.5 | 11/16 | 17.5 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 3/8 | 34.9 | ||
D2 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | 2 | 50.8 | ||
D1 | 3 1/8 | 79.4 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 3 1/2 | 88.9 | 4 | 102 | 4 | 102 | 4 1/4 | 108 | ||
n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | ||
d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 | 25.4 | ||
1 1/4 | A | 4 5/8 | 117.5 | 5 1/4 | 133.4 | 5 1/4 | 133.4 | 5 1/4 | 133.4 | 6 1/4 | 159 | 6 1/4 | 159 | 7 1/4 | 184.2 | |
b | 5/8 | 15.9 | 3/4 | 19 | 13/16 | 20.6 | 13/16 | 20.6 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/2 | 38.1 | ||
D2 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | 2 1/2 | 63.5 | ||
D1 | 3 1/2 | 88.9 | 3 7/8 | 98.4 | 3 7/8 | 98.4 | 3 7/8 | 98.4 | 4 3/8 | 111 | 4 3/8 | 111 | 5 1/8 | 130 | ||
n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | ||
d | 5/8 | 15.9 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 1/8 | 28.6 | ||
1 1/2 | A | 5 | 127 | 6 1/8 | 155.6 | 6 1/8 | 155.6 | 6 1/8 | 155.6 | 7 | 177.8 | 7 | 177.8 | 8 | 203 | |
b | 11/16 | 17.5 | 13/16 | 20.6 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/4 | 31.8 | 1 1/4 | 31.8 | 1 3/4 | 44.5 | ||
D2 | 2 7/8 | 73 98 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | 2 7/8 | 73 | ||
D1 | 3 7/8 | 4 | 4 1/2 | 114 | 4 1/2 | 114 | 4 1/2 | 114 | 4 7/8 | 124 | 4 7/8 | 124 | 5 3/4 | 146 | ||
n | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | ||
d | 5/8 | . 15.9 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/4 | 31.8 | ||
2 | A | 6 | 152.4 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 8 1/2 | 215.9 | 8 1/2 | 215.9 | 9 1/4 | 234.9 | |
b | 3/4 | 19 | 7/8 | 22.2 | 1 | 25.4 | 1 | 25.4 | 1 1/2 | 38.1 | 1 1/2 | 38.1 | 2 | 50.8 | ||
D2 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | 3 5/8 | 92.1 | ||
D1 | 4 3/4 | 121 | 5 | 127 | 5 | 127 | 5 | 127 | 6 1/2 | 165.1 | 6 1/2 | 165.1 | 6 3/4 | 171 | ||
n | 4 | 4 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||
d | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 3/4 | 19 | 1 | 25.4 | 1 | 25.4 | 1 1/8 | 28.6 | ||
2 1/2 | A | 7 | 177.8 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 9 5/8 | 244 | 9 5/8 | 244 | 10 1/2 | 266.7 | |
b | 7/8 | 22.2 | 1 | 25.4 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 5/8 | 41.3 | 1 5/8 | 41.3 | 2 1/4 | 57.2 | ||
D2 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 104.8 | 4 1/8 | 105 | 4 1/8 | 105 | 4 1/8 | 105 | ||
D1 | 5 1/2 | 139.7 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 5 7/8 | 149.2 | 7 1/2 | 190.5 | 7 1/2 | 190.5 | 7 3/4 | 197 | ||
n | 4 | 4 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | ||
d | 3/4 | 19 | 7/8 | 22.2 | 7/8 | 22.2 | 7/8 | 22.2 | 1 1/8 | 28.6 | 1 1/8 | 28.6 | 1 1/4 | 31.8 |
Orifice Plate Flange Temperature Ratings, Check How To Install Orifice Flanges?, ASME B16.36 Thickness Calculation For Pressure Vessel.
Stainless Steel Orifice Flange Thickness
ANSI B16.36 Flanges Wall Thickness | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
NPS (Normal Pipe Sizes) | Outside Daimeter (O.D.) | Schedule 10 | Schedule 20 | Schedule 30 | STD Wall | Schedule 40 | Schedule 60 | EXT Hvy | Schedule 80 | Schedule 100 | Schedule 120 | Schedule 140 | Schedule 160 | XX Hvy |
½ | 0.84 | 0.083 | ... | ... | 0.109 | 0.109 | ... | 0.147 | 0.147 | ... | ... | ... | 0.188 | 0.294 |
¾ | 1.05 | 0.083 | ... | ... | 0.113 | 0.113 | ... | 0.154 | 0.154 | ... | ... | ... | 0.219 | 0.308 |
1 | 1.315 | 0.109 | ... | ... | 0.133 | 0.133 | ... | 0.179 | 0.179 | ... | ... | ... | 0.25 | 0.358 |
1 ¼ | 1.66 | 0.109 | ... | ... | 0.14 | 0.14 | ... | 0.191 | 0.191 | ... | ... | ... | 0.25 | 0.382 |
1 ½ | 1.9 | 0.109 | ... | ... | 0.145 | 0.145 | ... | 0.2 | 0.2 | ... | ... | ... | 0.281 | 0.4 |
2 | 2.375 | 0.109 | ... | ... | 0.154 | 0.154 | ... | 0.218 | 0.218 | ... | ... | ... | 0.344 | 0.436 |
2 ½ | 2.875 | 0.12 | ... | ... | 0.203 | 0.203 | ... | 0.276 | 0.276 | ... | ... | ... | 0.375 | 0.552 |
3 | 3.5 | 0.12 | ... | ... | 0.216 | 0.216 | ... | 0.3 | 0.3 | ... | ... | ... | 0.438 | 0.6 |
3 ½ | 4 | 0.12 | ... | ... | 0.226 | 0.226 | ... | 0.318 | 0.318 | ... | ... | ... | ... | 0.636 |
4 | 4.5 | 0.12 | ... | ... | 0.237 | 0.237 | ... | 0.337 | 0.337 | ... | 0.438 | ... | 0.531 | 0.674 |
5 | 5.563 | 0.134 | ... | ... | 0.258 | 0.258 | ... | 0.375 | 0.375 | ... | 0.5 | ... | 0.625 | 0.75 |
6 | 6.625 | 0.134 | ... | ... | 0.28 | 0.28 | ... | 0.432 | 0.432 | ... | 0.562 | ... | 0.719 | 0.864 |
8 | 8.625 | 0.148 | 0.25 | 0.277 | 0.322 | 0.322 | 0.406 | 0.5 | 0.5 | 0.594 | 0.719 | 0.812 | 0.906 | 0.875 |
10 | 10.75 | 0.165 | 0.25 | 0.307 | 0.365 | 0.365 | 0.5 | 0.5 | 0.594 | 0.719 | 0.844 | 1 | 1.125 | 1 |
12 | 12.75 | 0.18 | 0.25 | 0.33 | 0.375 | 0.406 | 0.562 | 0.5 | 0.688 | 0.844 | 1 | 1.125 | 1.312 | 1 |
14 | 14 | 0.25 | 0.312 | 0.375 | 0.375 | 0.438 | 0.594 | 0.5 | 0.75 | 0.938 | 1.094 | 1.25 | 1.406 | ... |
16 | 16 | 0.25 | 0.312 | 0.375 | 0.375 | 0.5 | 0.656 | 0.5 | 0.844 | 1.031 | 1.219 | 1.438 | 1.594 | ... |
18 | 18 | 0.25 | 0.312 | 0.438 | 0.375 | 0.562 | 0.75 | 0.5 | 0.938 | 1.156 | 1.375 | 1.562 | 1.781 | ... |
20 | 20 | 0.25 | 0.375 | 0.5 | 0.375 | 0.594 | 0.812 | 0.5 | 1.031 | 1.281 | 1.5 | 1.75 | 1.969 | ... |
22 | 22 | 0.25 | ... | ... | 0.375 | ... | ... | 0.5 | ... | ... | .... | .... | .... | .... |
24 | 24 | 0.25 | 0.375 | 0.562 | 0.375 | 0.688 | 0.969 | 0.5 | 1.219 | 1.531 | 1.812 | 2.062 | 2.344 | .... |
26 | 26 | .... | .... | .... | 0.375 | .... | .... | 0.5 | .... | .... | .... | .... | .... | .... |
30 | 30 | 0.312 | 0.5 | 0.625 | 0.375 | .... | .... | 0.5 | .... | .... | .... | .... | .... | .... |
36 | 36 | 0.312 | 0.5 | 0.625 | 0.375 | 0.75 | .... | 0.5 | .... | .... | .... | .... | .... | .... |
40 | 40 | .... | .... | .... | 0.375 | .... | .... | 0.5 | .... | .... | .... | .... | .... | .... |
42 | 42 | …….. | …….. | …….. | 0.375 | …….. | …….. | 0.5 | …….. | …….. | …….. | …….. | …….. | …….. |
48 | 48 | …….. | …….. | …….. | 0.375 | …….. | …….. | 0.5 | …….. | …….. | …….. | …….. | …….. | …….. |
Jack Screw Sizes For Orifice Flanges

NPS | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Sizes | Length Of | Size Of Hole | Sizes | Length Of | Size Of Hole | Sizes | Length Of | Size Of Hole | Sizes | Length Of | Size Of Hole | Sizes | Length Of | Size Of Hole | |
1 | 5/8 | 2-3/4 | 11/16 | 5/8 | 2-3/4 | 11/16 | 5/8 | 2-3/4 | 11/16 | 5/8 | 3-1/4 | 3/4 | 5/8 | 3-1/4 | 3/4 |
1-1/4 | 5/8 | 2-3/4 | 11/16 | 5/8 | 2-3/4 | 11/16 | 5/8 | 2-3/4 | 11/16 | 5/8 | 3-1/4 | 3/4 | 5/8 | 3-1/4 | 3/4 |
1-1/2 | 5/8 | 2-3/4 | 11/16 | 5/8 | 2-3/4 | 11/16 | 5/8 | 2-3/4 | 11/16 | 5/8 | 3-1/4 | 3/4 | 5/8 | 3-1/4 | 3/4 |
2 | 5/8 | 2-3/4 | 11/16 | 5/8 | 2-3/4 | 11/16 | 5/8 | 2-3/4 | 11/16 | 5/8 | 3-1/4 | 3/4 | 5/8 | 3-1/4 | 3/4 |
2-1/2 | 5/8 | 2-3/4 | 13/16 | 5/8 | 2-3/4 | 13/16 | 3/4 | 2-3/4 | 13/16 | 5/8 | 3-1/2 | 3/4 | 5/8 | 3-1/2 | 3/4 |
3 | 3/4 | 2-3/4 | 13/16 | 3/4 | 2-3/4 | 13/16 | 3/4 | 2-3/4 | 13/16 | 3/4 | 3-1/4 | 7/8 | 3/4 | 3-3/4 | 7/8 |
4 | 3/4 | 2-3/4 | 13/16 | 3/4 | 3-1/4 | 7/8 | 3/4 | 3-1/4 | 7/8 | 3/4 | 3-1/2 | 7/8 | 3/4 | 4 | 7/8 |
5 | 3/4 | 2-3/4 | 7/8 | 3/4 | 3-1/4 | 7/8 | 3/4 | 3-1/2 | 7/8 | 3/4 | 3-3/4 | 7/8 | 3/4 | 5 | 7/8 |
6 | 3/4 | 2-3/4 | 7/8 | 7/8 | 3-1/2 | 1 | 7/8 | 4 | 1 | 1 | 4 | 1-1/8 | 1 | 5 | 1-1/8 |
8 | 3/4 | 3 | 7/8 | 7/8 | 4 | 1 | 7/8 | 4 | 1 | 1 | 4-1/2 | 1-1/8 | 1 | 5-1/2 | 1-1/8 |
10 | 1 | 3-1/2 | 1-1/8 | 7/8 | 4 | 1 | 7/8 | 4-1/2 | 1 | 1 | 4-1/2 | 1-1/8 | 1 | 6 | 1-1/8 |
12 | 1 | 3-1/2 | 1-1/8 | 7/8 | 4 | 1 | 7/8 | 4-1/2 | 1 | 1 | 5 | 1-1/8 | 1 | 7 | 1-1/8 |
14 | 1 | 3-1/2 | 1-1/8 | ||||||||||||
16 | 1 | 3-1/2 | 1-1/8 | ||||||||||||
18 | 1 | 3-3/4 | 1-1/8 | ||||||||||||
20 | 1 | 3-3/4 | 1-1/8 | ||||||||||||
24 | 1 | 4 | 1-1/8 |
Largest Small-Quantity Orifice Weld Neck Flange Supplier In Mumbai, India, We Stock A Wide Range Of Orifice Blind Flanges.
ANSI B16.36 Orifice Flange Gasket
NPS | Gasket I.D. |
Gasket O.D. | ||||
---|---|---|---|---|---|---|
Class 300 | Class 400 | Class 600 | Class 900 | |||
1/2 | 0.84 | 1.875 | 2.125 | 2.125 | 2.50 | |
3/4 | 1.06 | 2.25 | 2.625 | 2.625 | 2.75 | |
1 | 1.31 | 2.625 | 2.875 | 2.875 | 3.125 | |
1 1/4 | 1.66 | 3 | 3.25 | 3.25 | 3.50 | |
1 1/2 | 1.91 | 3.375 | 3.75 | 3.75 | 3.875 | |
2 | 2.38 | 4.125 | 4.375 | 4.375 | 5.625 | |
2 1/2 | 2.88 | 4.875 | 5.125 | 5.125 | 6.50 | |
3 | 3.50 | 5.375 | 5.875 | 5.875 | 6.625 | |
4 | 4.50 | 6.875 | 7.00 | 7.625 | 8.125 | |
5 | 5.56 | 7.75 | 8.375 | 9.50 | 9.75 | |
6 | 6.62 | 8.75 | 9.75 | 10.50 | 11.375 | |
8 | 8.62 | 11 | 12.00 | 12.625 | 14.125 | |
10 | 10.75 | 13.375 | 14.125 | 15.75 | 17.125 | |
12 | 12.75 | 16.125 | 16.50 | 18.00 | 19.625 | |
Orifice Flange Union Dimensions

Weld Neck Orifice Flange Dimensions

Size in Inches | Size in Millimeter | Outer Diameter | Flange Thickness | Hub Outside Daimeter | Weld Neck Outside Daimeter | Length Of Welding Neck | RF Daimeter | Height Of RF | PCD | Orifice Hole Daimeter | Number of Bolts | Size Of Bolt UNC | Length Of RF Stud | Size Of Hole | Size Of ISO Stud | Weight in Kilogram |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | F | G | H | I | ||||||||
1 | 25 | 125 | 36.6 | 54 | 33.4 | 81 | 50.8 | 2 | 88.9 | 6.4 | 4 | 5/8 | 125 | 3/4 | M16 | 4.5 |
1 1/2 | 40 | 155 | 36.6 | 70 | 48.3 | 84 | 73 | 2 | 114.3 | 6.4 | 4 | 3/4 | 135 | 7/8 | M20 | 6.5 |
2 | 50 | 165 | 36.6 | 84 | 60.3 | 84 | 92.1 | 2 | 127 | 6.4 | 8 | 5/8 | 125 | 3/4 | M16 | 7 |
2 1/2 | 65 | 190 | 36.6 | 100 | 73 | 87 | 104.8 | 2 | 149.2 | 6.4 | 8 | 3/4 | 135 | 7/8 | M20 | 7.5 |
3 | 80 | 210 | 36.6 | 117 | 88.9 | 87 | 127 | 2 | 168.3 | 9.5 | 8 | 3/4 | 135 | 7/8 | M20 | 9.4 |
4 | 100 | 255 | 36.6 | 146 | 114.3 | 90 | 157.2 | 2 | 200 | 12.7 | 8 | 3/4 | 135 | 7/8 | M20 | 13.2 |
6 | 150 | 320 | 36.6 | 206 | 168.3 | 98 | 215.9 | 2 | 269.9 | 12.7 | 12 | 3/4 | 135 | 7/8 | M20 | 14.6 |
8 | 200 | 380 | 39.7 | 260 | 219.1 | 110 | 269.9 | 2 | 330.2 | 12.7 | 12 | 7/8 | 145 | 1 | M24 | 30 |
10 | 250 | 445 | 46.1 | 321 | 273 | 116 | 323.8 | 2 | 387.3 | 12.7 | 16 | 1 | 165 | 1 1/8 | M27 | 41 |
12 | 300 | 520 | 49.3 | 375 | 323.8 | 129 | 381 | 2 | 450.8 | 12.7 | 16 | 1 1/8 | 180 | 1 1/4 | M30 | 62 |
14 | 350 | 585 | 52.4 | 425 | 355.6 | 141 | 412.8 | 2 | 514.4 | 12.7 | 20 | 1 1/8 | 185 | 1 1/4 | M30 | 84 |
16 | 400 | 650 | 55.6 | 483 | 406.4 | 144 | 469.9 | 2 | 571.5 | 12.7 | 20 | 1 1/4 | 195 | 1 3/8 | M33 | 111 |
18 | 450 | 710 | 58.8 | 533 | 457 | 157 | 533.4 | 2 | 628.6 | 12.7 | 24 | 1 1/4 | 205 | 1 3/8 | M33 | 138 |
20 | 500 | 775 | 62 | 587 | 508 | 160 | 584.2 | 2 | 685.8 | 12.7 | 24 | 1 1/4 | 215 | 1 3/8 | M33 | 171 |
24 | 600 | 915 | 68.3 | 702 | 610 | 167 | 692.2 | 2 | 812.8 | 12.7 | 24 | 1 1/2 | 240 | 1 5/8 | M39 | 247 |
Orifice Plate Flange Dimensions

Normal Pipe Size | Daimeter D3 |
L | N | P | T |
1/2 | 13 | 0.24 | 1.5 | 30 | 1.5 |
3/4 | 19 | 0.34 | 1.5 | 30 | 1.5 |
1 | 25 | 0.42 | 2 | 30 | 2 |
1½ | 40 | 0.64 | 3 | 30 | 3 |
2 | 51 | 1 | 6 | 30 | 3 |
3 | 76 | 1.5 | 8 | 40 | 3 |
4 | 102 | 1.5 | 10 | 40 | 5 |
6 | 152 | 1.5 | 15 | 40 | 5 |
8 | 202 | 3.5 | 15 | 40 | 7 |
10 | 253 | 3.5 | 19 | 45 | 7 |
12 | 302 | 3.5 | 20 | 45 | 10 |
14 | 341 | 6 | 20 | 45 | 10 |
16 | 392 | 6 | 21 | 50 | 11 |
18 | 443 | 8 | 23 | 50 | 13 |
20 | 494 | 8 | 25 | 50 | 16 |
24 | 595 | 10 | 29 | 60 | 18 |
DIN 19214 Orifice Flange Dimensions

We Provide Multiple Type Of ASME B16.36 Orifice Flange

3 Inch, Class 300, SCH 40, Orifice Flanges ASME B16.36

A182 F316, Raised Face, Stainless Steel Orifice Flanges

3 Inch, 300 LB, SCH 80, Carbon Steel Orifice Flanges

ASTM A105, ASME B16.36, Blind Orifice Flanges

Tongue & Groove Face, Schedule 80, Slip On Orifice Flanges

ASTM A350 Lf2, 300LB, 6 Inch, RF, Orifice Plate Flange Union

300LB, 10 Inch, SCH 80, RF, Raised Face Orifice Flanges

ANSI B16.36, 12 Inch, SCh120, Ring Joint Orifice Flanges

36 Inch, 900LB, RF, SCH STD, Weld Neck Orifice Flanges

SCH STD, 600LB, 14 Inch, Rtj Orifice Plate

Threaded Orifice Flange With Jack Screw, Nuts/Bolts

Class 300, 20 Inch, ANSI B16.36, Ring Joint Orifice Flanges
EN 1092-2 PN16 Raised Face Orifice Flange are obtainable in a variety of special materials and standard materials such as A182 F316 Stainless Steel, A182 F304 Stainless Steel, A182 F22 2¼% Cr 1% Mo, A105 Carbon Steel, A350 LF2 Low Temp Carbon Steel and A182 F11 1% Cr ½% Mo.