Spectacle Blind Dimensions In Mm

Spectacle blind dimensions in mm asme b16 48.

Spectacle blind dimensions in mm.

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

Use paddle blinds and ring spacers where no dimensions are shown for spectacle blind. Spectacle blind spades and spacers are also known as figure 8 paddle blank slip blind and spacer. In practice these dimensions have been rounded round off upwards. D hole size where required should be the same as the flange bolt hole.

Asme b16 48 specifies dimensions for figure 8 blanks spectacle blinds are not manufactured in large size due to weight issues. Spectacle blind figure 8 blank. 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. A spectacle blind is used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown.

This type is used in conjunction with ring joint gaskets. Ring joint face spectacle blind rtj. Dimensions are in millimeters unless otherwise indicated. A spectacle blind is basically made up of two metal discs attached to each other by a metal strip as shown in the figure.

An 8 blind or a spectacle blind is a piping fitting that is used for providing positive isolation. One is solid disc and the other is hollowed. Line size isolation 150 300 600 900 1500 2500 thickness o d. Class 150 spectacle blind dimensions in mm.

Dimensions based on sizes designed to suit ansi b 16 5 flanges. And thickness based on flange rating and blind type. All dimensions given in mm. Find your paddle blind dimensions for o d.

Dimensions of class 150 blind and spacer t weld 125 to 250 rms o weld o b t asme b16 48 blinds and spacers outside diameter o 1 2 3 4 1 1 1 4 1 1 2 2 2 1 2 3 3 1 2 4 5 6 8 10 12 14 16 18 20 24 0 62 0 82 1 05 1 66 1 90 2 38 2 88 3 50 4 00 4 50 5 56 6 62 8 62 10 75 12 75 14 00 16 00 18 00 20 00 24 00 nps inside diameter b thk t in. A groove is inscribed on the surface of the disc.