Spectacle Blind Dimensions Standard

Sizes and thicknesses meet the following specifications.

Spectacle blind dimensions standard. Class 150 spectacle. We offer a wide range of spectacle blinds spacers and blanks manufacture to api standards and b31 3 specifications. A line blank conforming to this standard will be marked in the following way. For 2500 spectacle blinds are upto 12.

Asme b16 48 standard that covers line blanks. Dimensions are in millimeters unless otherwise indicated. D hole size where required should be the same as the flange bolt hole. Ansi asme b16 48 class 150 spectacle blind flanges project reference list dynamic forge fittings supplied ansi asme b16 48 class 150 spectacle blind flanges in more then 37 countries in last 10 years.

Any thickness rating or alloy is available upon request. Click on the link to learn about the chemical and mechanical properties and the selection criteria of these common spectacle blind grades which are the same as flanges. T d 3p 16se t blank thickness inches. Spectacle blind type 4.

Long weld neck standard connection flanges. In this standard spectacle blinds are available only up to 24. Wt thickness of the web or tie bar should be 6 mm minimum or equal to thickness t if less than 6 mm. Line sizes up to 96 are available.

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. A spectacle blind is used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. We also manufacture bleed rings and lateral joints also. Standard dimensions of spectacle blind 8 blind.

This standard specifies dimensions of spectacle blinds. We are capable of handling size ranges from 1 150 lbs class to 36 2500 lbs class 702. An 8 blind or a spectacle blind is a piping fitting that is used for providing positive isolation. Spectacle blinds are available in standard sizes up to 24 inches and in forged material grades like astm a105 high temperature carbon a350 low temperature carbon and various astm a182 grades alloy stainless steel duplex.

Asme 16 48 asme 16 5 asme b16 47. Standard isolation thickness is 5 16 1 16. 48 60 paddle blinds spacers. A spectacle blind is basically made up of two metal discs attached to each other by a metal strip as shown in the figure.

One is solid disc and the other is hollowed. Paddle blank type 1 click any image above to enlarge it and lock it in place then scroll to the bottom table for dimensions spectacle blind flange classes choose your pressure class below. The specification that determines the dimensions of a spectacle blinds is asme b16 48 line blanks. In practice these dimensions have been.

Blank thicknesses over 24 nps calculated with asme s b31 3 equation.