Stainless Steel 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. The shape is similar to a pair of glasses or “spectacles” – hence the name spectacle blind. One end of the blind will have an opening to allow flow through the pipe during operation and the other end is solid to block flow during maintenance. They are generally installed as a permanent device to separate process piping systems.
SS Spectacle Blind Flanges offer a convenient and efficient method to isolate sections of pipelines, providing flexibility during maintenance, repair, or testing while maintaining the overall integrity and safety of the piping system.
Size | ½" (15 NB) to 48" (1200NB) |
---|---|
Class | 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS ASA 150#, 2.0MPa, 5.0MPa, 10.0MPa, 15.0MPa, 25.0MPa, 42.0MPa |
Standards | ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48 |
DIN | DIN2527, DIN2566, DIN2573, DIN2576, DIN2641, DIN2642, DIN2655, DIN2656, DIN2627, DIN2628, DIN2629, DIN 2631, DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637, DIN2638, DIN2673 |
B.S | BS4504 , BS4504, BS1560, BS10 |
Stainless Steel Spectacle Blind Face Flanges | |
Standard | ASTM A182 , A240 |
Grades | F 304, 304L, 304H, 316, 316Ti, 316H, 316L, 316LN, 309S, 309H, 310S, 310H,317, 317L, 321, 321H, 347, 347H, 201, 202, 904L |
PIPE SIZE | 150# FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 5/8 | 1-3/4 | 2-3/8 | 5/8 | 1-1/2 | 1/4 |
3/4" | 13/16 | 2-1/8 | 2-3/4 | 5/8 | 1-1/2 | 1/4 |
1" | 1-1/8 | 2-1/2 | 3-1/8 | 9/16 | 1-1/2 | 1/4 |
1-1/4" | 1-5/8 | 2-7/8 | 3-1/2 | 9/16 | 1-1/2 | 1/4 |
1-1/2" | 1-7/8 | 3-1/4 | 3-7/8 | 9/16 | 1-1/2 | 1/4 |
2" | 2-3/8 | 4 | 4-3/4 | 11/16 | 2 | 1/4 |
2-1/2" | 2-7/8 | 4-3/4 | 5-1/2 | 11/16 | 2 | 1/4 |
3" | 3-1/2 | 5-1/4 | 6 | 11/16 | 2-1/2 | 1/4 |
3-1/2" | 4 | 6-1/4 | 7 | 3/4 | 2-1/2 | 3/8 |
4" | 4-1/2 | 6-3/4 | 7-1/2 | 3/4 | 2-1/2 | 3/8 |
5" | 5-9/16 | 7-5/8 | 8-1/2 | 7/8 | 3 | 3/8 |
6" | 6-5/8 | 8-5/8 | 9-1/2 | 7/8 | 3 | 1/2 |
8" | 8-5/8 | 10-7/8 | 11-3/4 | 7/8 | 3 | 1/2 |
10" | 10-3/4 | 13-1/4 | 14-1/4 | 1 | 4 | 5/8 |
12" | 12-3/4 | 16 | 17 | 1 | 4 | 3/4 |
14" | 14 | 17-5/8 | 18-3/4 | 1-1/8 | 4-1/4 | 3/4 |
16" | 16 | 20-1/8 | 21-1/4 | 1-1/8 | 4-1/4 | 7/8 |
18" | 18 | 21-1/2 | 22-3/4 | 1-1/4 | 4-1/2 | 1 |
20" | 20 | 23-3/4 | 25 | 1-1/4 | 4-3/4 | 1-1/8 |
24" | 24 | 28-1/8 | 29-1/2 | 1-3/8 | 5-1/2 | 1-1/4 |
PIPE SIZE | 300# FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 5/8 | 2 | 2-5/8 | 5/8 | 1-1/2 | 1/4 |
3/4" | 13/16 | 2-1/2 | 3-1/4 | 3/4 | 1-1/2 | 1/4 |
1" | 1-1/8 | 2-3/4 | 3-1/2 | 11/16 | 1-1/2 | 1/4 |
1-1/4" | 1-5/8 | 3-1/8 | 3-7/8 | 11/16 | 1-1/2 | 1/4 |
1-1/2" | 1-7/8 | 3-5/8 | 4-1/2 | 7/8 | 2 | 1/4 |
2" | 2-3/8 | 4-1/4 | 5 | 3/4 | 2 | 3/8 |
2-1/2" | 2-7/8 | 5 | 5-7/8 | 7/8 | 2-1/2 | 3/8 |
3" | 3-1/2 | 5-3/4 | 6-5/8 | 7/8 | 2-1/2 | 3/8 |
3-1/2" | 4 | 6-3/8 | 7-1/4 | 7/8 | 2-1/2 | 1/2 |
4" | 4-1/2 | 7 | 7-7/8 | 7/8 | 2-1/2 | 1/2 |
5" | 5-5/8 | 8-3/8 | 9-1/4 | 7/8 | 3 | 5/8 |
6" | 6-5/8 | 9-3/4 | 10-5/8 | 7/8 | 3 | 5/8 |
8" | 8-5/8 | 12 | 13 | 1 | 3-1/2 | 7/8 |
10" | 10-3/4 | 14-1/8 | 15-1/4 | 1-1/8 | 4 | 1 |
12" | 12-3/4 | 16-1/2 | 17-3/4 | 1-1/4 | 4 | 1-1/8 |
14" | 14 | 19 | 20-1/4 | 1-1/4 | 4-3/4 | 1-1/4 |
16" | 16 | 21-1/8 | 22-1/2 | 1-3/8 | 4-7/8 | 1-1/2 |
18" | 18 | 23-3/8 | 24-3/4 | 1-3/8 | 4-1/2 | 1-5/8 |
20" | 20 | 25-5/8 | 27 | 1-3/8 | 4-3/4 | 1-3/4 |
24" | 24 | 30-3/8 | 32 | 1-5/8 | 5-1/2 | 2 |
PIPE SIZE | 600# FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 5/8 | 2 | 2-5/8 | 5/8 | 1-1/2 | 1/4 |
3/4" | 13/16 | 2-1/2 | 3-1/4 | 3/4 | 1-1/2 | 1/4 |
1" | 1-1/8 | 2-3/4 | 3-1/2 | 3/4 | 2-1/4 | 1/4 |
1-1/4" | 1-7/16 | 3-1/8 | 3-7/8 | 3/4 | 2-1/4 | 3/8 |
1-1/2" | 1-11/16 | 3-5/8 | 4-1/2 | 7/8 | 2-5/8 | 3/8 |
2" | 2-1/8 | 4-1/4 | 5 | 3/4 | 2-1/4 | 3/8 |
2-1/2" | 2-5/8 | 5 | 5-7/8 | 7/8 | 2-5/8 | 1/2 |
3" | 3-1/4 | 5-3/4 | 6-5/8 | 7/8 | 2-5/8 | 1/2 |
3-1/2" | 3-3/4 | 6-1/4 | 7-1/4 | 1 | 3 | 5/8 |
4" | 4-1/4 | 7-1/2 | 8-1/2 | 1 | 3 | 5/8 |
5" | 5-1/4 | 9-3/8 | 10-1/2 | 1-1/8 | 3-3/8 | 3/4 |
6" | 6-3/8 | 10-3/8 | 11-1/2 | 1-1/8 | 3-3/8 | 7/8 |
8" | 8-3/8 | 12-1/2 | 13-3/4 | 1-1/4 | 3-3/4 | 1-1/8 |
10" | 10-7/16 | 15-5/8 | 17 | 1-3/8 | 4-1/8 | 1-3/8 |
12" | 12-3/8 | 17-7/8 | 19-1/4 | 1-3/8 | 4-1/8 | 1-5/8 |
14" | 13-5/8 | 19-1/4 | 20-3/4 | 1-1/2 | 4-1/2 | 1-3/4 |
16" | 15-5/8 | 22-1/8 | 23-3/4 | 1-5/8 | 4-7/8 | 2 |
18" | 17-5/8 | 24 | 25-3/4 | 1-3/4 | 5-1/4 | 2-1/8 |
20" | 19-5/16 | 26-3/4 | 28-1/2 | 1-3/4 | 5-1/4 | 2-1/2 |
24" | 23-1/2 | 31 | 33 | 2 | 6 | 2-7/8 |
PIPE SIZE | 900# FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 0.625 | 2.375 | 3.25 | - | 1.50 | 1/4 |
3/4" | 0.0825 | 2.625 | 3.50 | 0.875 | 1.625 | 1/4 |
1" | 1.05 | 3.0 | 4.0 | 1.0 | 2.25 | 1/4 |
1-1/4" | 1.44 | 3.375 | 4.375 | 1.0 | 2.25 | 3/8 |
1-1/2" | 1.68 | 3.5 | 4.875 | 1.125 | 2.625 | 3/8 |
2" | 2.16 | 5.5 | 6.5 | 1.0 | 2.25 | 1/2 |
2-1/2" | 2.64 | 6.375 | 7.5 | 1.125 | 2.625 | 1/2 |
3" | 3.25 | 6.5 | 7.5 | 1.0 | 2.625 | 5/8 |
4" | 4.25 | 8.0 | 9.25 | 1.25 | 3.0 | 3/4 |
5" | 5.3 | 9.625 | 11.0 | 1.375 | 3.375 | 7/8 |
6" | 6.36 | 11.25 | 12.5 | 1.25 | 3.375 | 1 |
8" | 8.33 | 14.0 | 15.5 | 1.5 | 3.75 | 1-3/8 |
10" | 10.42 | 17.0 | 18.5 | 1.5 | 4.125 | 1-5/8 |
12" | 12.39 | 19.5 | 21.0 | 1.5 | 4.125 | 1-7/8 |
14" | 13.62 | 20.375 | 22.0 | 1.625 | 4.5 | 2-1/8 |
16" | 15.62 | 22.5 | 24.25 | 1.75 | 4.875 | 2-3/8 |
18" | 17.62 | 25.0 | 27.0 | 2.0 | 5.25 | 2-5/8 |
20" | 19.56 | 27.375 | 29.5 | 2.125 | 5.25 | 2-7/8 |
24" | 23.5 | 32.875 | 35.5 | 2.625 | 6.0 | 3-1/2 |
PIPE SIZE | 1500# FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 0.625 | 2.375 | 3.25 | - | 1.50 | 1/4 |
3/4" | 0.82 | 2.625 | 3.50 | 0.875 | 1.625 | 3/8 |
1" | 1.05 | 3.0 | 4.0 | 1.0 | 2.5 | 3/8 |
1-1/4" | 1.375 | 3.375 | 4.375 | 1.0 | 2.5 | 3/8 |
1-1/2" | 1.61 | 3.75 | 4.875 | 1.125 | 2.75 | 1/2 |
2" | 2.07 | 5.5 | 6.5 | 1.0 | 2.75 | 1/2 |
2-1/2" | 2.47 | 6.375 | 7.5 | 1.125 | 3.0 | 5/8 |
3" | 3.07 | 6.75 | 8.0 | 1.25 | 3.0 | 3/4 |
4" | 4.03 | 8.125 | 9.5 | 1.375 | 3.5 | 7/8 |
5" | 5.05 | 9.875 | 11.5 | 1.625 | 3.5 | 1-1/8 |
6" | 6.06 | 11.0 | 12.5 | 1.5 | 3.5 | 1-3/8 |
8" | 7.98 | 13.75 | 15.5 | 1.75 | 4.0 | 1-5/8 |
10" | 10.02 | 17.0 | 19.0 | 2.0 | 4.5 | 2 |
12" | 11.94 | 20.375 | 22.5 | 2.125 | 4.5 | 2-3/8 |
14" | 13.12 | 22.625 | 25.0 | 2.375 | 5.0 | 2-5/8 |
16" | 15.0 | 25.125 | 27.75 | 2.625 | 5.25 | 3 |
18" | 16.88 | 27.625 | 30.5 | 2.875 | 5.75 | 3-3/8 |
20" | 18.81 | 29.625 | 32.75 | 3.125 | 6.0 | 3-3/4 |
24" | 22.62 | 35.375 | 39.0 | 3.625 | 7.0 | 4-3/8 |
PIPE SIZE | 2500# FLANGES | |||||
A | B | C | D | E | F | |
1/2" | 0.625 | 2.625 | 3.5 | - | 1.50 | 3/8 |
3/4" | 0.82 | 2.875 | 3.75 | 0.875 | 1.625 | 3/8 |
1" | 1.05 | 3.25 | 4.25 | 1.0 | 2.5 | 3/8 |
1-1/4" | 1.38 | 4.0 | 5.125 | 1.125 | 2.5 | 1/2 |
1-1/2" | 1.61 | 4.5 | 5.75 | 1.25 | 2.75 | 5/8 |
2" | 2.07 | 5.625 | 6.75 | 1.125 | 2.75 | 5/8 |
2-1/2" | 2.47 | 6.5 | 7.75 | 1.25 | 3.0 | 3/4 |
3" | 3.07 | 7.625 | 9.0 | 1.375 | 3.0 | 7/8 |
4" | 4.03 | 9.125 | 10.75 | 1.625 | 3.5 | 1-1/8 |
5" | 5.05 | 10.875 | 12.75 | 1.875 | 3.5 | 1-3/8 |
6" | 6.06 | 12.375 | 14.5 | 2.125 | 3.5 | 2 |
8" | 7.81 | 15.125 | 17.25 | 2.125 | 4.0 | 2-1/8 |
10" | 9.75 | 18.625 | 21.25 | 2.625 | 4.5 | 2-5/8 |
12" | 11.37 | 21.5 | 24.375 | 2.875 | 4.5 | 3-1/8 |
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