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Spectacle Blind Flange Manufacturers in India

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Spectacle Blind Flanges Manufacturer & Suppliers in Mumbai, India


Fitwel Industries LLP is the leading manufacturers, supplier & exporter of quality ASME b16.5 class 150 spectacle blinds flanges, Stainless Steel spectacle flanges, Carbon Steel spectacle flanges, DIN-2527 spectacle blind flanges, A182 Gr F347H Spectacle Blinds, ASTM A182 F22 Spectacle in Mumbai, Pune, Ahmedabad India. We have Spectacle Blinds Flange are available in all standard in which the common world standards include ASA/ ANSI/ ASME, BS10, PN/ DIN, and JIS/ KS, which are stocked or available in the following range of sizes and materials for the petrochemical, oil, gas and allied industries.

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Spectacle Blinds Flange manufacturers are generally applied to permanently separating pipesystems, or just to connect with each other. A Spectacle Blind is a steel plate cut into two discs of a certain thickness. The two discs are attached to each other by section of steel similar to the nose piece of a pair of glasses. One of the discs is a solid plate, and the other is a ring, whose inside diameter is equal to that of a flange.A182 Gr F316 Spectacle Blinds Flange can be assembled and disassembled easily with Pipes. A182 Gr F347H Spectacle Blinds Flange can be forged or plate. Steel Spectacle Blinds are mostly applied to separating pipe systems, or just to connect with each other.

Spectacle Blinds Flange be applied in systems, which regularly need to be separated from other installations. Normally, a Spectacle Blind is mounted in the "open" position so that flow through the pipe is possible. If the Spectacle Blind in the "close" position is rotated, the pipe is blanked off and no flow is possible. A ASTM A350 LF6 Spectacle Blinds Flange is a steel plate cut into two discs of a certain thickness. The two discs are attached to each other by a section of steel similar to the nose piece of a pair of glasses. One of the discs is a solid plate, and the other is a ring, whose inside diameter is equal to that of a flange. Spectacle Blinds ASME B16.48 be applied in systems, which regularly need to be separated from other installations. Normally, a A182 Gr F 304L Spectacle Blinds flange is mounted in the "open" position so that flow through the pipe is possible. If the Spectacle Blind in the "close" position is rotated, the pipe is blanked off and no flow is possible.

Maintenance on a pipesystem can be a reason to rotate the spectacle in the "close" position. This run will take place through the hole, that is drilled in the connection piece. By loosening of all bolts, and partial removal of their, the Spectacle Blind can be rotated. After replacing the gaskets (new gaskets are to recommend), the bolts can be re-assembled and tightened. Compare our price from Spectacle Blind Flange manufacturers in Mumbai India, you will find the best rate from us ever.We also offer these products at custom-built sizes and shapes to our respected patrons. These flanges are offered at the most affordable rates to our renowned clients. We Export ASTM A182 F9 Spectacle Blinds Flanges in Qatar, Kingdom Of Bahrain, Saudi Arabia, Indonesia, United States, Singapore, Malaysia, Turkey, UAE, Russia, Ukraine, South Africa, Australia, etc.


What is Spectacle blind flanges?

Spectacle blind flanges – also known as figure-8 blind flanges – are generally pieces of metal. Spectacle blind flange cut to fit between two pipe flanges and usually sandwiched between two gaskets. A spectacle blind is often made from two metal discs that are attached to each other by a small section of steel.

What is the purpose of a spectacle blind?

A spectacle blind or spec blind, abbreviated as SB, is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. It is different than a valve in that the blind is a permanent or long term isolation device.

How do you use a spectacle blind flange?

Spectacle Blinds be applied in systems, which regularly need to be separated from other installations. Normally, a Spectacle Blind is mounted in the "open" position so that flow through the pipe is possible. If the Spectacle Blind in the "close" position is rotated, the pipe is blanked off and no flow is possible.

What is difference between spectacle blind and spacer?

Spade and Spacers are part of a family referred to as Line Blinds. Jointly they perform the same function as a Spectacle Blind as essentially a simplistic valve. The Spacer is used when the line is required open and the Paddle Blind or Spade is installed when the line is required blocked or closed.

ASME B16.5 Spectacle Blind Flanges Specification :

Standard : ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings

Size : 1/2" (15 NB) to 48" (1200NB)

Class : 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS, DIN Standard ND-6,10, 16, 25, 40 Etc.

Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

BS : BS4504 , BS4504, BS1560, BS10

DIN : DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673

Spectacle Blind Flanges Specification

Specifications for Spectacle Blind Flanges is mentioned below. If any of the specification is not mentioned here, please get in touch with us

Material of Construction Standard Grades
Stainless Steel Spectacle Blind Flanges ASTM A182 , A240 F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L
Carbon Steel Spectacle Blind Flanges ASTM A105 Gr. F42,46,52,56,60,65,70
Alloy Steel
Spectacle Blind Flanges		 ASTM A182 F1,F5,F9,F11,F22,F91
Nickel Alloy
Spectacle Blind Flanges		 ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020),
Copper Alloys Spectacle Blind Flanges ASTM SB 61 , SB62 , SB151 , SB152 UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200,
Low Temperature Carbon Steel Spectacle Blind Flanges ASTM A350 LF2 , LF3
Duplex Steel Spectacle Blind Flanges ASTM A182, A240 UNS F 44, F 45, F51, F 53, F 55, F 60, F 61

Dimension Chart of Spectacle Blind Flanges

Dimenion Chart for Spectacle Blind Flanges is mentioned below. If any of the Dimension is not mentioned here, please get in touch with us

Outside Diameter
≤ 24 = 1.6 mm | > 24 = ± 3.2 mm		 Inside Diameter
≤ 10 = ± 0.8 mm | ≥ 12 = + 1.6 mm / – 0 mm
Diameter of Contact Face
1.6 mm Raised Face = ± 0.8 mm
6.35 mm Raised Face, Tongue & Groove / Male-Female = ± 0.4 mm		 Outside Diameter of Hub
≤ 12 = + 2.4 mm / – 1.6 mm | ≥ 14 = ± 3.2 mm
Diameter of Counterbore
Same as for Inside Diameter		 Drilling
Bolt Circle = 1.6 mm | Bolt Hole Spacing = ± 0.8 mm
Eccentricity of Bolt Circle with Respect to Facing
≤ 2½ = 0.8 mm max. | ≥ 3 = 1.6 mm max.
Thickness
≤ 18 = + 3.2 mm / – 0 | ≥ 20 = + 4.8 mm / – 0		 Length thru Hub
≤ 18 = + 3.2 mm / – 0.8 mm | ≥ 20 = + 4.8 mm / – 1.6 mm

All Classes Dimensions of Spectacle Blind Flange

Spectacle flange dimension

Pressure Class 150

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 45 16 60 3 38
3/4 54 21 70 3 38
1 64 27 80 3 38
1¼ 73 42 90 6.4 38
1½ 83 48 100 6.4 38
2 102 61 120 6.4 51
2½ 107 73 140 6.4 51
3 133 89 150 6.4 64
3½ 159 102 175 9.7 64
4 172 114 190 9.7 64
5 194 141 215 9.7 76
6 219 168 240 12.7 76
8 276 219 300 12.7 76
10 337 273 360 15.7 102
12 406 324 430 19.1 102
14 448 356 475 19.1 108
16 511 406 460 22.4 108
18 546 457 580 25.4 114
20 603 508 635 28.4 121
24 714 610 750 31.8 140
NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W

Spectacle flange dimension

Pressure Class 300

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 51 16 65 6.4 38
3/4 64 21 80 6.4 38
1 70 27 90 6.4 38
1¼ 79 42 100 6.4 38
1½ 92 48 115 6.4 38
2 108 61 125 9.7 51
2½ 127 73 150 9.7 51
3 146 89 170 9.7 64
3½ 162 102 185 12.7 64
4 178 114 200 12.7 64
5 213 141 235 15.7 76
6 248 168 270 15.7 76
8 305 219 330 22.4 76
10 359 273 385 25.4 102
12 419 324 450 28.4 102
14 483 356 515 31.8 108
16 536 406 570 38.1 108
18 594 457 630 41.1 114
20 651 508 685 44.5 121
24 772 610 810 50.8 140
NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W

Spectacle flange dimension

Pressure Class 600

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 51 16 65 6.4 38
3/4 64 21 80 6.4 38
1 70 27 90 6.4 57
1¼ 79 37 100 9.7 57
1½ 92 43 115 9.7 67
2 108 55 125 9.7 57
2½ 127 67 150 12.7 67
3 146 83 170 12.7 67
3½ 159 96 185 15.7 76
4 191 108 215 15.7 76
5 238 135 265 19.1 86
6 264 162 290 22.4 86
8 318 212 350 28.4 95
10 397 265 430 35.1 105
12 454 315 490 41.1 105
14 489 346 525 44.5 114
16 562 397 605 50.8 124
18 610 448 655 53.8 133
20 679 497 725 63.5 133
24 787 597 840 73.2 152
NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W

Spectacle flange dimension

Pressure Class 900

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 60 16 80 6.4 38
3/4 67 21 90 6.4 41
1 76 27 100 6.4 57
1¼ 86 37 110 9.7 57
1½ 95 43 125 9.7 67
2 140 55 165 12.7 57
2½ 162 67 190 12.7 67
3 165 83 190 15.7 67
4 203 108 235 19.1 76
5 244 135 280 22.4 86
6 286 162 320 25.4 86
8 356 212 395 35.1 95
10 432 265 470 41.1 105
12 495 315 535 47.8 105
14 518 346 560 53.8 114
16 572 397 615 60.5 124
18 635 448 685 66.5 133
20 696 497 750 73.2 133
24 835 597 900 88.9 152
NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W

Spectacle flange dimension

Pressure Class 1500

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 61 16 80 6.4 38
3/4 67 21 90 9.7 41
1 76 27 100 9.7 64
1¼ 86 35 110 9.7 64
1½ 95 41 125 12.7 70
2 140 53 165 12.7 70
2½ 162 63 190 15.7 76
3 172 78 205 19.1 76
4 206 102 240 22.4 89
5 251 128 290 28.4 89
6 279 154 320 35.1 89
8 349 203 395 41.1 102
10 432 255 480 50.8 114
12 518 303 570 60.5 114
14 575 333 635 66.5 127
16 638 381 705 76.2 133
18 702 429 775 85.9 146
20 752 478 830 95.3 152
24 899 575 990 111.3 178
NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W

Spectacle flange dimension

Pressure Class 2500

NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
1/2 67 16 90 9.7 38
3/4 73 21 95 9.7 41
1 83 27 110 9.7 64
1¼ 102 35 130 12.7 64
1½ 114 41 145 15.7 70
2 143 53 170 15.7 70
2½ 165 63 195 19.1 76
3 194 78 230 22.4 76
4 232 102 275 28.4 89
5 276 128 325 35.1 89
6 314 154 370 41.1 89
8 384 198 440 53.8 102
10 473 248 540 66.5 114
12 546 289 620 79.2 114
NPS Outside Ø
A		 Inside Ø
B		 Center Line
C		 THK
t		 Web Width
W
General notes:

  • Dimensions are in millimeters unless otherwise indicated.
  • D = Hole size (where required) should be the same as the flange bolt hole. In practice, these dimensions have been rounded round off upwards.
  • Wt = Thickness of the web (or tie bar) should be 6 mm minimum, or equal to Thickness (t) if less than 6 mm.
  • Spectacle Blinds should be made from a plate or forging specification, approved for use by ASME B31.3, of essentially the same chemical composition as the mating flanges and piping involved.
  • Spectacle Blinds ASME B16.48 may be used for installation between ASME B16.5 flanges
  • Depending on a customer specification, some dimensions can be different from what on this page is defined.



    • Call@ 9987994248. Leading Spectacle Blind Flanges Manufacturers in India. world wide & domestic suppliers & exporter of comprehensive range of high quality ANSI/ ASME B16.5 Spectacle Blind Flanges in Mumbai, India, Ahmedabad, Chennai, Pune etc.

    Other Names: ANSI B16.5 Spectacle Blind Flanges, Spectacle Blind Flanges, Spectacle Blind Flange Class 150, Spectacle Blind Flange Class 300

    Material: Stainless Steel, Carbon Steel, Duplex & Super Duplex Steel, High Nickel Alloy, Hastelloy & Titanium

    Brand: Fitwel Industries LLP

    Manufacturer: Fitwel Industries LLP

    Suppliers & Exporter: Fitwel Industries LLP

    Rating: 4.2/5 based on 1048 customer reviews

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    We Supply Spectacle Blind Flanges For Various Application Industry Like :

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       HO- Unit No.10, Tulsi Bldg, Khetwadi, Mumbai-400004, India

      BO- 10, Shriram Estate, Kewal, Industrial Area, Rakhial, Ahmedabad-380023, India

      +91-9987994248

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