Spectacle Blind Dimensions In Mm

Ring joint face spectacle blind rtj.

Spectacle blind dimensions in mm. These have both blank and spacer as a single component in the shape of 8. A spectacle blind is used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. Dimensions based on sizes designed to suit ansi b 16 5 flanges. Paddle blind dimensions with hydrotest thickness chart.

Spectacle blind figure 8 blank. A spectacle blind is basically made up of two metal discs attached to each other by a metal strip as shown in the figure. Spectacle blind dimensions in mm asme b16 48. Asme b16 48 specifies dimensions for figure 8 blanks spectacle blinds are not manufactured in large size due to weight issues.

Find your paddle blind dimensions for o d. A groove is inscribed on the surface of the disc. This type is used in conjunction with ring joint gaskets. Use paddle blinds and ring spacers where no dimensions are shown for spectacle blind.

In practice these dimensions have been rounded round off upwards. 1 2 5 16 1 3 4 5 16 2 5 16 2 5 16 2 3 8 5 16 2 3 8 5 16 2 5 8 3 8 3 4 5 16 2 1 8 5 16. An 8 blind or a spectacle blind is a piping fitting that is used for providing positive isolation. Dimensions are in millimeters unless otherwise indicated.

One is solid disc and the other is hollowed. Line size isolation 150 300 600 900 1500 2500 thickness o d. This standard covers the dimensions for spectacle blind spades and spacers with pressure class 150 300 600 900 1500 and 2500 as listed in asme b16 5. These are three different components that used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown.

Drill down to both series a and series b blinds. Class 150 spectacle blind dimensions in mm. Spectacle blind spades and spacers are also known as figure 8 paddle blank slip blind and spacer. And thickness based on flange rating and blind type.

Wt thickness of the web or tie bar should be 6 mm minimum or equal to thickness t if less than 6 mm. Asme b16 48 standard that covers line blanks.