What pressure rating does a Class 150 flange have?
This rating denotes the maximum pressure a flange withstands at a specific temperature. As an established ASME B16.5 Class 150 weld neck flange supplier in UAE, we have high-quality products with a rating of 150 (dimensionless).
The pressure capacity goes down with increasing temperature. For example, a Cl150 flange tolerates 270 PSIG at ambient conditions but 75 PSIG at 800°F.
How does an ASME B16.5 Class 150 weld neck flange differ from other flange classes?
The appropriate class for industrial projects guarantees safety and performance. Class 150 long weld neck flange is available from 1/2 to 24”. B16.47 covers larger flanges (series A and B).
DIN standards usually have tighter tolerances than a Class 150 threaded flange.
Can a Class 150 slip on flange be used for both raised face and flat face applications?
Clients may employ various face types based on application conditions and budgets. A Class 150 flat face flange is simpler to install. It suits low-pressure applications.
In contrast, a raised Class 150 slip on flange is better for more critical roles.
Table of content
Class 150 Flange
Size
Class
ASTM
ASME
Specifications | Class 150 Flange |
---|---|
Schedule | SCH 5S To XXS |
Pressure Class | 150 To 2500 |
Methods Of Forging | Casting Forging Rolling Cutting |
Use In | Marine & dredging Sanitation Process Instrumentation Oil and Gas Petrochemical/ Refinery/Chemical Power etc. |
Equipment | Pushing Machine Press machine electric bevelling machine |
Available Packing | Packing In Plywood Box And Plywood Pallet |
Testing | Hydrostatic testing machine Magnetic particle detector Direct-reading Spectrograph UI trasonic flaw detector |
Class 150 Flange Manufacturer In UAE Size | NPS 1⁄₂" To NPS 48” |
Supporting Material For Flanges | Gasket/ Ring Joint/ Flanges Bolts |
Description | Price In US ($) |
---|---|
Flanges Weld Neck, RF, Class 150, 3/4 Inch Sch 80/XS A105N | US $12.67 Per KG |
Flanges Blind, RF, Class 150, 3/4 A105N | US $12.21 Per KG |
A182 GR F304/304L, Slip On Flanges, 300 RF, 2 Inch, SCH 80 | US $458.08 Per KG |
Blind Flanges, CLASS 150 PSI, 3 INCH, SCH 40, RF | US $217.29 Per KG |
4 IN, ANSI 150 LB FLANGE END, 8 HOLE, | US $127.66 Per KG |
Flanges Weld Neck, RF, Class 150, 2 Inch, Sch80/XS A105N | US $93.91 Per KG |
Flanges Weld Neck, RF, Class 150, 3/4 Inch, Sch 80/XS A105N | US $6.34 Per KG |
Flanges Weld Neck, RF, Class 150, 4 Inch Sch 40/Std A105N | US $38.50 Per KG |
A182 GR F304/304L, Slip On Flanges, 150 RF, 3/4 Inch, SCH 120 | US $395.53 Per KG |
Blind Flanges, RF, CLASS 150, B16.5, A182 F316/F316L 1/2' | US $30.46 Per KG |
Types Of ASME B16.5 Class 150 Forged Flanges
ANSI 150 Slip On Flanges
Class 150 Blind Flanges
Class 150 Welding Neck Flanges
Class 150 Socket Weld Flanges
Class 150 Plate Flanges
ASME B16.5 Class 150 Lap Joint Flanges
150 LBS Threaded Flanges
ASME 150LB Raised Face Flanges
Class 150 High Hub Blind Flanges
Class 150 Pipe Flanges
Class 150 Stainless Steel Flanges
Class 150 Carbon Steel Flanges
Class 150 Flange Dimensions In Mm
NPS |
O.D. of flanges |
Minimum WT |
Length Of Overall | Number Holes | O.D. of R/F | |||
---|---|---|---|---|---|---|---|---|
WNRF | SORF & SWRF BLRF |
Lapped Joint | ||||||
O | Q | Y | Number | Diameter | R | |||
1/2 | 89 | 11.2 | 47.6 | 15.9 | 15.9 | 4 | 15 | 35 |
3/4 | 117 | 15.9 | 57.2 | 25.4 | 25.4 | 4 | 15 | 43 |
1 | 108 | 14.3 | 55.6 | 17.5 | 17.5 | 4 | 15 | 51 |
1.1/4 | 117 | 15.9 | 57.2 | 20.6 | 20.6 | 4 | 15 | 64 |
1.1/2 | 127 | 17.5 | 61.9 | 22.2 | 22.2 | 4 | 15 | 73 |
2 | 152 | 19.1 | 63.5 | 25.4 | 25.4 | 4 | 19 | 92 |
2.1/2 | 178 | 22.3 | 69.8 | 28.6 | 28.6 | 4 | 19 | 105 |
3 | 190 | 23.9 | 69.8 | 30.2 | 30.2 | 4 | 19 | 127 |
3.1/2 | 216 | 23.9 | 71.4 | 31.8 | 31.8 | 8 | 19 | 140 |
4 | 229 | 23.9 | 86.2 | 33.3 | 33.3 | 8 | 19 | 157 |
5 | 254 | 23.9 | 88.9 | 36.5 | 36.5 | 8 | 22 | 186 |
6 | 279 | 25.4 | 88.9 | 39.7 | 39.7 | 8 | 22 | 216 |
8 | 343 | 28.6 | 101.6 | 44.4 | 44.4 | 8 | 22 | 270 |
10 | 406 | 30.2 | 101.6 | 49.2 | 49.2 | 12 | 25 | 324 |
12 | 483 | 31.8 | 114.3 | 55.6 | 55.6 | 12 | 25 | 381 |
14 | 533 | 35.0 | 127.0 | 57.2 | 79.4 | 12 | 29 | 413 |
16 | 597 | 36.6 | 127.0 | 63.5 | 87.3 | 16 | 29 | 470 |
18 | 635 | 39.7 | 139.7 | 68.3 | 96.8 | 16 | 32 | 533 |
20 | 698 | 42.9 | 144.5 | 73.0 | 103.2 | 20 | 32 | 584 |
24 | 813 | 47.7 | 152.4 | 82.6 | 111.1 | 20 | 35 | 692 |
Class 150 Long Weld Neck Flange Dimensions
NPS |
O.D. Of
(A) |
R/F Diameters Of (B) |
Wall Thickness Of
|
Bore
Diameters
|
Hub
Diameters at Base
|
Hub Length
|
Number
of Bolts Holes |
Bolts
Holes Diameter |
B.C.
Diameters Of
|
Weight in (KG) |
---|---|---|---|---|---|---|---|---|---|---|
1/2 | 3 1/2 | 1 3/8 | 7/16 | 0.50 | 1 1/4 | 9 | 4 | 5/8 | 2 3/8 | 21 |
3/4 | 3 7/8 | 1 11/16 | 1/2 | 0.75 | 1 5/8 | 9 | 4 | 5/8 | 2 3/4 | 27 |
1 | 4 1/4 | 2 | 9/16 | 1.00 | 2 | 9 | 4 | 5/8 | 3 1/8 | 30 |
1 1/4 | 4 5/8 | 2 1/2 | 5/8 | 1.25 | 2 3/8 | 9 | 4 | 5/8 | 3 1/2 | 36 |
1 1/2 | 5 | 2 7/8 | 11/16 | 1.50 | 2 5/8 | 9 | 4 | 5/8 | 3 7/8 | 41 |
2 | 6 | 3 5/8 | 3/4 | 2.00 | 3 1/4 | 9 | 4 | 3/4 | 4 3/4 | 57 |
2 1/2 | 7 | 4 1/8 | 7/8 | 2.50 | 3 3/4 | 9 | 4 | 3/4 | 5 1/2 | 79 |
3 | 7 1/2 | 5 | 15/16 | 3.00 | 4 1/4 | 9 | 4 | 3/4 | 6 | 86 |
3 1/2 | 8 1/2 | 5 1/2 | 15/16 | 3.50 | 4 7/8 | 9 | 8 | 3/4 | 7 | 110 |
4 | 9 | 6 3/16 | 15/16 | 4.00 | 5 1/2 | 12 | 8 | 3/4 | 7 1/2 | 164 |
5 | 10 | 7 5/16 | 15/16 | 5.00 | 6 1/2 | 12 | 8 | 7/8 | 8 1/2 | 189 |
6 | 11 | 8 1/2 | 1 | 6.00 | 7 3/4 | 12 | 8 | 7/8 | 9 1/2 | 216 |
8 | 13 1/2 | 10 5/8 | 1 1/8 | 8.00 | 9 3/4 | 12 | 8 | 7/8 | 11 3/4 | 292 |
10 | 16 | 12 3/4 | 1 3/16 | 10.00 | 12 | 12 | 12 | 1 | 14 1/4 | 382 |
12 | 19 | 15 | 1 1/4 | 12.00 | 14 3/8 | 12 | 12 | 1 | 17 | 535 |
14 | 21 | 16 1/4 | 1 3/8 | 14.00 | 16 | 12 | 12 | 1 1/8 | 18 3/4 | 585 |
16 | 23 1/2 | 18 1/2 | 1 7/16 | 16.00 | 18 | 12 | 16 | 1 1/8 | 21 1/4 | 714 |
18 | 25 | 21 | 1 9/16 | 18.00 | 20 | 12 | 16 | 1 1/4 | 22 3/4 | 711 |
20 | 27 1/2 | 23 | 1 11/16 | 20.00 | 22 | 12 | 20 | 1 1/4 | 25 | 840 |
ANSI 150 Bleed Or Drip Ring Dimensions
NPS | ID | OD by Pressure |
1 | 28.6 | 63.5 |
1.1/2 | 41.3 | 82.6 |
2 | 54 | 101.6 |
2.1/2 | 63.5 | 120.7 |
3 | 79.4 | 133.4 |
4 | 104.8 | 171.5 |
6 | 155.6 | 219.1 |
8 | 203.2 | 276.2 |
10 | 257.2 | 336.6 |
12 | 304.8 | 406.4 |
Dimensions Of Class 150 Spades And Ring Spacers
NPS | OD Of (A) | ID Of (B) | Center-to-End (C) | WT Of(T) | Handle Width (W) |
1/2 | 45 | 16 | 126 | 3 | 32 |
3/4 | 54 | 21 | 131 | 3 | 32 |
1 | 64 | 27 | 136 | 3 | 32 |
1.1/4 | 73 | 42 | 145 | 6.4 | 32 |
1.1/2 | 83 | 48 | 145 | 6.4 | 32 |
2 | 102 | 61 | 155 | 6.4 | 32 |
2.1/2 | 107 | 73 | 170 | 6.4 | 32 |
3 | 133 | 89 | 170 | 6.4 | 32 |
3.1/2 | 159 | 102 | 202 | 9.7 | 38 |
4 | 172 | 114 | 202 | 9.7 | 38 |
5 | 194 | 141 | 225 | 9.7 | 38 |
6 | 219 | 168 | 225 | 12.7 | 38 |
8 | 276 | 219 | 267 | 12.7 | 38 |
10 | 337 | 273 | 322 | 15.7 | 44 |
12 | 406 | 324 | 357 | 19.1 | 44 |
14 | 448 | 356 | 378 | 19.1 | 44 |
16 | 511 | 406 | 410 | 22.4 | 44 |
18 | 546 | 457 | 427 | 25.4 | 51 |
20 | 603 | 508 | 455 | 28.4 | 51 |
24 | 714 | 610 | 512 | 31.8 | 51 |
Class 150 Studding Outlet Dimensions
Normal Size | OD of | WT of | Dia. of (R/F) | Dia. Of B.C. | Hole Size | No. Of Bolt Holes | Hole Depth | Tap Size | Threads In Inches T.P.I | Tap Depth | Flat Bottom Weight AS Per Kilogram | - |
---|---|---|---|---|---|---|---|---|---|---|---|---|
B | O | T | R | C | U | V | Base | per 1″ | - | - | - | - |
1/2 | 3.5 | 1.25 | 1.38 | 2.38 | 27/64 | 4 | 0.88 | 1/2 | 13 | 0.56 | 3 | 2.7 |
3/4 | 3.88 | 1.25 | 1.69 | 2.75 | 27/64 | 4 | 0.88 | 1/2 | 13 | 0.56 | 3.7 | 3.2 |
1 | 4.25 | 1.25 | 2 | 3.12 | 27/64 | 4 | 0.88 | 1/2 | 13 | 0.56 | 4.3 | 3.8 |
1 1/4 | 4.62 | 1.25 | 2.5 | 3.5 | 27/64 | 4 | 0.88 | 1/2 | 13 | 0.56 | 5.1 | 4.4 |
1 1/2 | 5 | 1.25 | 2.88 | 3.88 | 27/64 | 4 | 0.88 | 1/2 | 13 | 0.56 | 5.9 | 5.1 |
2 | 6 | 1.5 | 3.62 | 4.75 | 17/32 | 4 | 1.12 | 5/8 | 11 | 0.75 | 10.2 | 7.1 |
2 1/2 | 7 | 1.5 | 4.12 | 5.5 | 17/32 | 4 | 1.12 | 5/8 | 11 | 0.75 | 14 | 9.5 |
3 | 7.5 | 1.5 | 5 | 6 | 17/32 | 4 | 1.12 | 5/8 | 11 | 0.75 | 15 | 11 |
3 1/2 | 8.5 | 1.5 | 5.5 | 7 | 17/32 | 8 | 1.12 | 5/8 | 11 | 0.75 | 19 | 13 |
4 | 9 | 1.5 | 6.19 | 7.5 | 17/32 | 8 | 1.12 | 5/8 | 11 | 0.75 | 20 | 14 |
5 | 10 | 1.75 | 7.31 | 8.5 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 | 28 | 17 |
6 | 11 | 1.75 | 8.5 | 9.5 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 | 31 | 19 |
8 | 13.5 | 1.75 | 10.62 | 11.75 | 21/32 | 8 | 1.31 | 3/4 | 10 | 0.88 | 46 | 26 |
10 | 16 | 1.81 | 12.75 | 14.25 | 49/64 | 12 | 1.44 | 7/8 | 9 | 1 | 58 | 35 |
12 | 19 | 1.81 | 15 | 17 | 49/64 | 12 | 1.44 | 7/8 | 9 | 1 | 83 | 48 |
14 | 21 | 2 | 16.25 | 18.75 | 7/8 | 12 | 1.56 | 1 | 8 | 1.12 | 102 | 55 |
16 | 23.5 | 2 | 18.5 | 21.25 | 7/8 | 16 | 1.56 | 1 | 8 | 1.12 | 123 | 66 |
18 | 25 | 2.25 | 21 | 22.75 | 1 | 16 | 1.81 | 1 1/8 | 8 | 1.25 | 140 | 67 |
20 | 27.5 | 2.25 | 23 | 25 | 1 | 20 | 1.81 | 1 1/8 | 8 | 1.25 | 166 | 79 |
24 | 32 | 2.5 | 27.25 | 29.5 | 1 1/8 | 20 | 2.12 | 1 1/4 | 8 | 1.44 | 231 | 100 |
Class 150 Flat Face Flange Dimensions
Normal Size | Diameter | ID | holes No. | Diameter | WT | Diameter of (B.C) | Bolt Holes Diameter | Weight In Kilogram | |
(DN) | (ISO) | (DIN) | (D5) | (BN) | (D) | (b) | (K) | (d2) | (KG/PCS) |
10 | – | 14 | 14.5 | 4 | 90 | 16 | 60 | 14 | 0.7 |
17.2 | – | 17.7 | 4 | 90 | 16 | 60 | 14 | 0.69 | |
15 | – | 20 | 21 | 4 | 95 | 16 | 65 | 14 | 0.77 |
21.3 | – | 22 | 4 | 95 | 16 | 65 | 14 | 0.77 | |
20 | – | 25 | 26 | 4 | 105 | 18 | 75 | 14 | 1.06 |
26.9 | – | 27.6 | 4 | 105 | 18 | 75 | 14 | 1.05 | |
25 | – | 30 | 31 | 4 | 115 | 18 | 85 | 14 | 1.27 |
33.7 | – | 34.4 | 4 | 115 | 18 | 85 | 14 | 1.25 | |
32 | – | 38 | 39 | 4 | 140 | 18 | 100 | 18 | 1.86 |
42.4 | – | 43.1 | 4 | 140 | 18 | 100 | 18 | 1.83 | |
40 | – | 44.5 | 45.5 | 4 | 150 | 18 | 110 | 18 | 2.12 |
48.3 | – | 49 | 4 | 150 | 18 | 110 | 18 | 2.09 | |
50 | – | 57 | 58.1 | 4 | 165 | 20 | 125 | 18 | 2.78 |
60.3 | – | 61.1 | 4 | 165 | 20 | 125 | 18 | 2.74 | |
65 | 76.1 | – | 77.1 | 8 | 185 | 22 | 145 | 18 | 3.48 |
80 | 88.9 | – | 90.3 | 8 | 200 | 24 | 160 | 18 | 4.33 |
100 | – | 108 | 109.6 | 8 | 235 | 24 | 190 | 22 | 5.82 |
114.3 | – | 115.9 | 8 | 235 | 24 | 190 | 22 | 5.61 | |
125 | – | 133 | 134.8 | 8 | 270 | 26 | 220 | 26 | 7.91 |
139.7 | – | 141.6 | 8 | 270 | 26 | 220 | 26 | 7.6 | |
150 | – | 159 | 161.1 | 8 | 300 | 28 | 250 | 26 | 10.12 |
168.3 | – | 170.5 | 8 | 300 | 28 | 250 | 26 | 9.58 | |
175 | 193.7 | – | 196.1 | 12 | 350 | 32 | 295 | 30 | 14.45 |
200 | 219.1 | – | 221.8 | 12 | 375 | 34 | 320 | 30 | 16.9 |
250 | – | 267 | 270.2 | 12 | 450 | 38 | 385 | 33 | 27.28 |
273 | – | 276.2 | 12 | 450 | 38 | 385 | 33 | 26.51 | |
300 | 323.9 | – | 327.6 | 16 | 515 | 42 | 450 | 33 | 36.38 |
350 | 355.6 | – | 359.7 | 16 | 580 | 46 | 510 | 36 | 52.83 |
– | 368 | 372.2 | 16 | 580 | 46 | 510 | 36 | 50.24 | |
400 | 406.4 | – | 411 | 16 | 660 | 50 | 585 | 39 | 74.71 |
– | 419 | 423.7 | 16 | 660 | 50 | 585 | 39 | 71.44 | |
500 | 508 | – | 513.6 | 20 | 755 | 52 | 670 | 42 | 86.87 |
600 | 610 | – | 616.5 | 20 | 890 | 54 | 795 | 48 | 121.84 |
700 | 711 | – | 716 | 24 | 995 | 58 | 900 | 48 | 150.93 |
800 | 813 | – | 818 | 24 | 1140 | 64 | 1030 | 56 | 219.08 |
900 | 914 | – | 920 | 28 | 1250 | 70 | 1140 | 56 | 271.16 |
1000 | 1016 | – | 1022 | 28 | 1360 | 78 | 1250 | 56 | 344.95 |
ASME B16.5 Class 150 Flange Thickness
Normal Size | OD | Minimum WT (T) | Diameter Of R/F | Bolt Holes No. | Dia. Of Holes | B.C. | Bore Of SORF ID | Bore Of WNRF ID | Dia. Of Hub Base | Hub Top Dia. | Length Of SORF | Length Of WNRF |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1⁄2 | 3.50 | 0.38 | 1.38 | 4 | 0.62 | 2.38 | 0.88 | 0.62 | 1.19 | 0.84 | 0.56 | 1.81 |
3⁄4 | 3.88 | 0.44 | 1.69 | 4 | 0.62 | 2.75 | 1.09 | 0.82 | 1.50 | 1.05 | 0.56 | 2.00 |
1 | 4.25 | 0.50 | 2.00 | 4 | 0.62 | 3.12 | 1.36 | 1.05 | 1.94 | 1.32 | 0.62 | 2.12 |
11⁄4 | 4.62 | 0.56 | 2.50 | 4 | 0.62 | 3.50 | 1.70 | 1.38 | 2.31 | 1.66 | 0.75 | 2.19 |
11⁄2 | 5.00 | 0.62 | 2.88 | 4 | 0.62 | 3.88 | 1.95 | 1.61 | 2.56 | 1.90 | 0.81 | 2.38 |
2 | 6.00 | 0.69 | 3.62 | 4 | 0.75 | 4.75 | 2.44 | 2.07 | 3.06 | 2.38 | 0.94 | 2.44 |
21⁄2 | 7.00 | 0.81 | 4.12 | 4 | 0.75 | 5.50 | 2.94 | 2.47 | 3.56 | 2.88 | 1.06 | 2.69 |
3 | 7.50 | 0.88 | 5.00 | 4 | 0.75 | 6.00 | 3.57 | 3.07 | 4.25 | 3.50 | 1.12 | 2.69 |
31⁄2 | 8.50 | 0.88 | 5.50 | 8 | 0.75 | 7.00 | 4.07 | 3.55 | 4.81 | 4.00 | 1.19 | 2.75 |
4 | 9.00 | 0.88 | 6.19 | 8 | 0.75 | 7.50 | 4.57 | 4.03 | 5.31 | 4.50 | 1.25 | 2.94 |
5 | 10.00 | 0.88 | 7.31 | 8 | 0.88 | 8.50 | 5.66 | 5.05 | 6.44 | 5.56 | 1.38 | 3.44 |
6 | 11.00 | 0.94 | 8.50 | 8 | 0.88 | 9.50 | 6.72 | 6.07 | 7.56 | 6.63 | 1.50 | 3.44 |
8 | 13.50 | 1.06 | 10.62 | 8 | 0.88 | 11.75 | 8.72 | 7.98 | 9.69 | 8.63 | 1.69 | 3.94 |
10 | 16.00 | 1.12 | 12.75 | 12 | 1.00 | 14.25 | 10.88 | 10.02 | 12.00 | 10.75 | 1.88 | 3.94 |
12 | 19.00 | 1.19 | 15.00 | 12 | 1.00 | 17.00 | 12.88 | 12.00 | 14.38 | 12.75 | 2.12 | 4.44 |
14 | 21.00 | 1.31 | 16.25 | 12 | 1.12 | 18.75 | 14.14 | 13.25 | 15.75 | 14.00 | 2.19 | 4.94 |
16 | 23.50 | 1.38 | 18.50 | 16 | 1.12 | 21.25 | 16.16 | 15.25 | 18.00 | 16.00 | 2.44 | 4.94 |
18 | 25.00 | 1.50 | 21.00 | 16 | 1.25 | 22.75 | 18.18 | 17.25 | 19.88 | 18.00 | 2.62 | 5.44 |
20 | 27.50 | 1.62 | 23.00 | 20 | 1.25 | 25.00 | 20.20 | 19.25 | 22.00 | 20.00 | 2.81 | 5.62 |
22 | 29.50 | 1.75 | 25.25 | 20 | 1.38 | 27.25 | 22.22 | 21.25 | 24.25 | 22.00 | 3.07 | 5.82 |
24 | 32.00 | 1.81 | 27.25 | 20 | 1.38 | 29.50 | 24.25 | - | - | - | - | - |
Bolt Size Chart For Class 150 Flange
Size in (Inches) | Size in (Millimeter) | Bolts Number | Bolts Size In UNC | Stud Length (RF) | Stud Size In ISO | Machine Bolts Length |
---|---|---|---|---|---|---|
1/2 | 15 | 4 | 1/2 | 55 | M14 | 50 |
3/4 | 20 | 4 | 1/2 | 65 | M14 | 50 |
1 | 25 | 4 | 1/2 | 65 | M14 | 55 |
1 1/4 | 32 | 4 | 1/2 | 70 | M14 | 55 |
1 1/2 | 40 | 4 | 1/2 | 70 | M14 | 65 |
2 | 50 | 4 | 5/8 | 85 | M16 | 70 |
2 1/2 | 65 | 4 | 5/8 | 90 | M16 | 75 |
3 | 80 | 4 | 5/8 | 90 | M16 | 75 |
3 1/2 | 90 | 8 | 5/8 | 90 | M16 | 75 |
4 | 100 | 8 | 5/8 | 90 | M16 | 75 |
5 | 125 | 8 | 3/4 | 95 | M20 | 85 |
6 | 150 | 8 | 3/4 | 100 | M20 | 85 |
8 | 200 | 8 | 3/4 | 110 | M20 | 90 |
10 | 250 | 12 | 7/8 | 115 | M24 | 100 |
12 | 300 | 12 | 7/8 | 120 | M24 | 100 |
14 | 350 | 12 | 1 | 135 | M27 | 115 |
16 | 400 | 16 | 1 | 135 | M27 | 115 |
18 | 450 | 16 | 1 1/8 | 145 | M30 | 125 |
20 | 500 | 20 | 1 1/8 | 160 | M30 | 140 |
24 | 600 | 20 | 1 1/4 | 170 | M33 | 150 |
Number Of Bolt Holes In 150LB Flange
NPS (in inch) |
Class 150 Flanges | ||||
---|---|---|---|---|---|
Diameter ( in Inches) |
Number of Bolts |
Diameter of Bolts (in Inches) |
Diameter of Bolts Holes (in Inches) |
(B.C.) (in Inches) |
|
1/4 | 3-3/8 | 4 | 1/2 | 0.62 | 2-1/4 |
1/2 | 3-1/2 | 4 | 1/2 | 0.62 | 2-3/8 |
3/4 | 3-7/8 | 4 | 1/2 | 0.62 | 2-3/4 |
1 | 4-1/4 | 4 | 1/2 | 0.62 | 3-1/8 |
1-1/4 | 4-5/8 | 4 | 1/2 | 0.62 | 3-1/2 |
1-1/2 | 5 | 4 | 1/2 | 0.62 | 3-7/8 |
2 | 6 | 4 | 5/8 | 0.75 | 4-3/4 |
2-1/2 | 7 | 4 | 5/8 | 0.75 | 5-1/2 |
3 | 7-1/2 | 4 | 5/8 | 0.75 | 6 |
3-1/2 | 8-1/2 | 8 | 5/8 | 0.75 | 7 |
4 | 9 | 8 | 5/8 | 0.75 | 7-1/2 |
5 | 10 | 8 | 3/4 | 0.88 | 8-1/2 |
6 | 11 | 8 | 3/4 | 0.88 | 9-1/2 |
8 | 13-1/2 | 8 | 3/4 | 0.88 | 11-3/4 |
10 | 16 | 12 | 7/8 | 1 | 14-1/4 |
12 | 19 | 12 | 7/8 | 1 | 17 |
14 | 21 | 12 | 1 | 1.12 | 18-3/4 |
16 | 23-1/2 | 16 | 1 | 1.12 | 21-1/4 |
18 | 25 | 16 | 1-1/8 | 1.25 | 22-3/4 |
20 | 27-1/2 | 20 | 1-1/8 | 1.25 | 25 |
24 | 32 | 20 | 1-1/4 | 1.38 | 29-1/2 |
Normal Size In Inch | Normal Size In MM | OD In (MM) |
WT Of (D) In MM) |
SORF SWRF |
WNRF | BLRF |
---|---|---|---|---|---|---|
1/2 | 15 | 88.9 | 11.2 | 0.4 | 0.5 | 0.4 |
3/4 | 20 | 98.6 | 12.7 | 0.6 | 0.7 | 0.6 |
1 | 25 | 108 | 14.2 | 0.8 | 1 | 0.9 |
1 1/4 | 32 | 117.3 | 15.7 | 1 | 1.3 | 1.2 |
1 1/2 | 40 | 127 | 17.5 | 1.3 | 1.7 | 1.5 |
2 | 50 | 152.4 | 19.1 | 2.1 | 2.6 | 2.4 |
2 1/2 | 65 | 177.8 | 22.4 | 3.3 | 4.1 | 3.9 |
3 | 80 | 190.5 | 23.9 | 3.9 | 4.9 | 4.9 |
3 1/2 | 90 | 215.9 | 23.9 | 4.8 | 6.1 | 6.2 |
4 | 100 | 228.6 | 23.9 | 5.3 | 6.8 | 7.0 |
5 | 125 | 254 | 23.9 | 6.1 | 8.6 | 8.6 |
6 | 150 | 279.4 | 25.4 | 7.5 | 10.6 | 11.3 |
8 | 200 | 342.9 | 28.4 | 12.1 | 17.6 | 19.6 |
10 | 250 | 406.4 | 30.2 | 16.5 | 24 | 28.6 |
12 | 300 | 482.6 | 31.8 | 26.2 | 36.5 | 43.2 |
14 | 350 | 533.4 | 35.1 | 34.6 | 48.4 | 58.1 |
16 | 400 | 596.9 | 36.6 | 44.8 | 60.6 | 76.1 |
18 | 450 | 635 | 39.6 | 48.9 | 68.3 | 93.7 |
20 | 500 | 698.5 | 42.9 | 61.9 | 84.5 | 122.0 |
Class 150 Flange Pressure Rating
Temperature (in F°) | 150# |
100 | 285 |
200 | 260 |
300 | 230 |
400 | 200 |
500 | 170 |
600 | 140 |
650 | 125 |
700 | 110 |
750 | 95 |
800 | 80 |
850 | 65 |
900 | 50 |
950 | 35 |
1000 | 20 |
Hydrostatic Test (psig) | 450 |
Class 150 Flange Gasket Dimensions
Normal Pipe Size In Inch | (I.D.) Gasket | (O.D.) Gasket |
---|---|---|
Class 150 | ||
1/2 | 0.84 | 1.875 |
3/4 | 1.06 | 2.25 |
1 | 1.31 | 2.625 |
1 1/4 | 1.66 | 3 |
1 1/2 | 1.91 | 3.375 |
2 | 2.38 | 4.125 |
2 1/2 | 2.88 | 4.875 |
3 | 3.50 | 5.375 |
4 | 4.50 | 6.875 |
5 | 5.56 | 7.75 |
6 | 6.62 | 8.75 |
8 | 8.62 | 11 |
10 | 10.75 | 13.375 |
NPS Size Inch | NPS Size MM | (Max.) Radial Projection | |
---|---|---|---|
No Deeper Than the Bottom In (MM) | Deeper Than the Bottom In (MM) | ||
1/2 | 15 | 3.0 | 1.5 |
3/4 | 20 | 3.0 | 1.5 |
1 | 25 | 3.0 | 1.5 |
1 1/4 | 32 | 3.0 | 1.5 |
1 1/2 | 40 | 3.0 | 1.5 |
2 | 50 | 3.0 | 1.5 |
2 1/2 | 65 | 3.0 | 1.5 |
3 | 80 | 4.5 | 1.5 |
3 1/2 | 90 | 6.0 | 3.0 |
4 | 100 | 6.0 | 3.0 |
5 | 125 | 6.0 | 3.0 |
6 | 150 | 6.0 | 3.0 |
8 | 200 | 8.0 | 4.5 |
10 | 250 | 8.0 | 4.5 |
12 | 300 | 8.0 | 4.5 |
14 | 350 | 8.0 | 4.5 |
16 | 400 | 10.0 | 4.5 |
18 | 450 | 12.0 | 6.0 |
What factors affect the cost of Class 150 forged flanges besides size and wall thickness?
Buyers should select these flanges per the environmental pressure and temperature (ambient and operating fluid). The costs of Class 150 forged flanges depend on the material grade and the sizing (non-standard may cost more). Additional treatments like polishing and sandblasting inflate prices of a 150# flange.
We can offer factory rates since we maintain a collection of non-standard sizes and have experts for integrated quality control. Note that higher pressure classes than a 150 lb flange increase the outside diameter, bolt circle diameter, and bolt hole number.
What are the advantages of using a Class 150 blind flange over other classes?
If materials like stainless steel are selected, these flanges deliver trustable performance and corrosion resistance. A Class 150 blind flange has a uniform distribution of bolt holes and a smooth surface finish. They are also easy to install and adapt to versatile sectors like petrochemicals and desalination.
What are the benefits of gaskets in 150 LB flange connections?
In a 150# socket weld flange, the core advantage of a gasket is a secure, leak-tight seal as compression changes.
A gasket minimises noise, vibration, etc., and prolongs the lifespan of a Class 150 weld neck flange.