Figure 8 Blind Dimension

An 8 blind or a spectacle blind is a piping fitting that is used for providing positive isolation.

Figure 8 blind dimension.

Other materials are available on request. 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. One is solid disc and the other is hollowed.

The largest inventory of spectacle blinds figure 8 blind blank eye glass blind blank in any size rating or alloy what is a spectacle blind. 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. Dimensions of class 150 rf figure 8 blanks or spectacle blinds as per asme b16 48. 1 2 to 60 dn 12mm to dn 1500mm.

And thickness based on flange rating and blind. Dimensions from spectacle blinds spades and ring spacers you will find in the main menu flanges asme b16 48 covers pressure temperature ratings materials dimensions dimensional tolerances marking and testing for operating line blanks in sizes nps 1 2 nps 24 for installation between asme b16 5 flanges. 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.