And thickness based on flange rating and blind.
Figure 8 blind dimension.
A spectacle blind is basically made up of two metal discs attached to each other by a metal strip as shown in the figure.
A figure 8 blank also called a spectacle blind flange is a pressure retaining plate with one solid end and one open end connected with a web or tie bar.
An 8 blind or a spectacle blind is a piping fitting that is used for providing positive isolation.
1 2 to 60 dn 12mm to dn 1500mm.
A spectacle blind is generally a piece of metal typically carbon steel or stainless steel that is machined to fit between two pipe flanges and usually set in between two gaskets.
Flowell spectacle figure 8 blinds thicknesses are in accordance with api 590 to assure that these units will withstand the temperature and pressure of an ansi rated flange.
One is solid disc and the other is hollowed.
Dimensions of class 150 rf figure 8 blanks or spectacle blinds as per asme b16 48.
304 and 316 stainless steel units are also readily available.
Carbon steel units are available from stock.
Find your paddle blind dimensions for o d.