- A ring spacer is bored to match the pipe I.D. and thickness of the spacer it replaces.
- A single spacer is has no bore and is designed to complete shut-off of a pipeline or valve.
- A spectical blind is a combination of both a ring and single spacer. To make switching from one to the other, especially in the larger sizes, a bolt hole or slot in the spacer bar is provided for rotation.
- Surface finish to be specified.
- These blind/spacers are designed for ASME B31.3 and ASME B16.5.
- Pressure temperature rating in accordance with ANSI/ASME B16.48 for sizes 1/2" to 24".
Spectacle Blind - ANSI Class 1500 (in) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Pipe
Size(NPS) | Outside
Diameter A | Diameter
of Bore B | Blind
Distance C | Plate
Thickness D | Handle
Length E | Handle
Width F | Handle
Width G | Lift Hole
Diameter H |
| 1/2 | 2.38 | 0.62 | 3.25 | 0.25 | 5.00 | 1.00 | 1.50 | N/A |
| 3/4 | 2.62 | 0.82 | 3.50 | 0.38 | 5.00 | 1.00 | 1.62 | 0.875 |
| 1 | 3.00 | 1.05 | 4.00 | 0.38 | 5.00 | 1.00 | 2.50 | 1.00 |
| 1 1/4 | 3.38 | 1.38 | 4.38 | 0.38 | 5.00 | 1.00 | 2.50 | 1.00 |
| 1 1/2 | 3.75 | 1.61 | 4.88 | 0.50 | 5.00 | 1.00 | 2.75 | 1.125 |
| 2 | 5.50 | 2.07 | 6.50 | 0.50 | 5.00 | 1.00 | 2.75 | 1.00 |
| 2 1/2 | 6.38 | 2.47 | 7.50 | 0.62 | 6.00 | 1.00 | 3.00 | 1.125 |
| 3 | 6.75 | 3.07 | 8.00 | 0.75 | 6.00 | 1.00 | 3.00 | 1.25 |
| 4 | 8.12 | 4.03 | 9.50 | 0.88 | 6.00 | 1.00 | 3.50 | 1.375 |
| 5 | 9.88 | 5.05 | 11.50 | 1.12 | 6.00 | 1.00 | 3.50 | 1.625 |
| 6 | 11.00 | 6.06 | 12.50 | 1.38 | 6.00 | 1.00 | 3.50 | 1.50 |
| 8 | 13.75 | 7.98 | 15.50 | 1.62 | 7.00 | 1.00 | 4.00 | 1.75 |
| 10 | 17.00 | 10.02 | 19.00 | 2.00 | 8.00 | 1.50 | 4.50 | 2.00 |
| 12 | 20.38 | 11.94 | 22.50 | 2.38 | 8.00 | 1.50 | 4.50 | 2.125 |
| 14 | 22.62 | 13.12 | 25.00 | 2.62 | 9.00 | 1.50 | 5.00 | 2.375 |
| 16 | 25.12 | 15.00 | 27.75 | 3.00 | 9.00 | 1.50 | 5.25 | 2.625 |
| 18 | 27.62 | 16.88 | 30.50 | 3.38 | 10.00 | 1.50 | 5.75 | 2.875 |
| 20 | 29.62 | 18.81 | 32.75 | 3.75 | 10.00 | 1.50 | 6.00 | 3.125 |
| 22 | - | - | - | - | - | - | - | - |
| 24 | 35.38 | 22.62 | 39.00 | 4.38 | 10.00 | 1.50 | 7.00 | 3.625 |
