Spectacle Blind Dimensions Standard

48 60 paddle blinds spacers.

Spectacle blind dimensions standard.

Standard dimensions of spectacle blind 8 blind. 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. For 2500 spectacle blinds are upto 12. Asme b16 48 standard that covers line blanks.

We are capable of handling size ranges from 1 150 lbs class to 36 2500 lbs class 702. We offer a wide range of spectacle blinds spacers and blanks manufacture to api standards and b31 3 specifications. Asme 16 48 asme 16 5 asme b16 47. Any thickness rating or alloy is available upon request.

We also manufacture bleed rings and lateral joints also. Sizes and thicknesses meet the following specifications. Spectacle blind type 4. Wt thickness of the web or tie bar should be 6 mm minimum or equal to thickness t if less than 6 mm.

Standard isolation thickness is 5 16 1 16. Class 150 spectacle. Spectacle blind line blanks. A spectacle blind is basically made up of two metal discs attached to each other by a metal strip as shown in the figure.

D hole size where required should be the same as the flange bolt hole. The specification that determines the dimensions of a spectacle blinds is asme b16 48 line blanks. This standard specifies dimensions of spectacle blinds. Blank thicknesses over 24 nps calculated with asme s b31 3 equation.

In this standard spectacle blinds are available only up to 24. A line blank conforming to this standard will be marked in the following way. 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. An 8 blind or a spectacle blind is a piping fitting that is used for providing positive isolation.

The thickness of the spectacle blind is specified based on the line pressure and pipe size. A spectacle blind is used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. 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. Ansi asme b16 48 class 150 spectacle blind flanges dimensions.

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. 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. In practice these dimensions have been. Long weld neck standard connection flanges.

T d 3p 16se t blank thickness inches.