Spectacle Blind Dimensions

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Spectacle blind dimensions.

Paddle blind dimensions with hydrotest thickness chart paddle blind dimensions. Asme b16 48 standard that covers line blanks. A spectacle blind is used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. 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 type 4. These are three different components that used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. 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. Wt thickness of the web or tie bar should be 6 mm minimum or equal to thickness t if less than 6 mm.

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. Spectacle blinds should be made from a plate or forging specification approved for use by asme b31 3 of essentially the same chemical composition as the mating flanges. Iso 9001 2015 iso 14001 2015 ohsas 18000 2007 ped certified. 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.

Spectacle blind type 3. 1 permit required confined spaces 1910 146 blanking or blinding means the absolute closure of a pipe line or duct by the fastening of a solid plate such as a spectacle blind or a skillet blind that completely covers the bore and that is capable of withstanding the maximum pressure of the. Class 150 spectacle blind line blank. 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.

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. Manufacturers and stockists of 150 spectacle blind dimensions. Spectacle blind spades and spacers are also known as figure 8 paddle blank slip blind and spacer. Usa ez vent blinds.

One is solid disc and the other is hollowed. 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. Buy at reasonable prices in india. In practice these dimensions have been rounded round off upwards.

Spectacle blind line blanks. Line size isolation 150 300 600 900 1500 2500 thickness thk o d.