Figure 8 Blind Flange

Spectacle blind flange also known as figure 8 flange which is combination of the two that can be rotated to function as single bind or a ring spacer.

Figure 8 blind flange.

One end of the spectacle flange is solid while the other end has a hole in the center. A spectacle blind also known as a figure 8 blind is generally a piece of metal that is cut to fit between two pipe flange and usually sandwiched between two gaskets. 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. 304 and 316 stainless steel units are also readily available.

Other materials are available on request. The shape is similar to a pair of glasses or spectacles hence the name spectacle blind. Carbon steel units are available from stock. One end of the spectacle flange is solid while the other end has a hole in the center.

1 2 to 60 dn 12mm to dn 1500mm. A spectacle blind is often made from two metal discs that are attached to each other by a small section of steel. Spectacle flanges also known as spectacle blind flanges are most commonly used on piping systems that need to be separated regularly or where the flow through the systems is regularly stopped.