Spectacle Blind - ANSI Class 300 (in)

Written by Matt Milbury. Posted in Accessory Datasheets

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".

Dimensional Data

 

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 2.00 0.62 2.62 0.25 4.00 1.00 1.50 N/A
3/4 2.50 0.82 3.25 0.25 4.00 1.00 1.50 N/A
1 2.75 1.05 3.50 0.25 4.00 1.00 1.50 N/A
1 1/4 3.12 1.66 3.88 0.25 4.00 1.00 1.50 N/A
1 1/2 3.62 1.90 4.50 0.25 4.00 1.00 2.00 N/A
2 4.25 2.38 5.00 0.38 4.00 1.00 2.00 0.75
2 1/2 5.00 2.88 5.88 0.38 4.00 1.00 2.50 0.875
3 5.75 3.50 6.62 0.38 4.00 1.00 2.50 0.875
3 1/2 6.38 4.00 7.25 0.50 4.00 1.00 2.50 0.875
4 7.00 4.50 7.88 0.50 4.00 1.00 2.50 0.875
5 8.38 5.56 9.25 0.62 4.00 1.00 3.00 0.875
6 9.75 6.62 10.62 0.62 4.00 1.00 3.00 0.875
8 12.00 8.62 13.00 0.88 4.00 1.00 3.50 1.00
10 14.12 10.75 15.25 1.00 5.00 1.00 4.00 1.125
12 16.50 12.75 17.75 1.12 5.00 1.50 4.00 1.25
14 19.00 14.00 20.25 1.25 5.00 1.50 4.75 1.25
16 21.12 16.00 22.50 1.50 5.00 1.50 4.88 1.375
18 23.38 18.00 24.75 1.62 5.00 1.50 4.50 1.375
20 25.62 20.00 27.00 1.75 6.00 1.50 4.75 1.375
22 - - - - - - - -
24 30.38 24.00 32.00 2.00 6.00 1.50 5.50 1.625