Spectacle Blind Flanges Dimensions

One is solid disc and the other is hollowed.

Spectacle blind flanges dimensions. A spectacle blind combines a flange spade and a ring spacer in a single device this is the reason why flange spades are called single blinds or blanks. In practice these dimensions have been rounded round off upwards. Table below provides links to dimensions of female rtj spectacle blinds as per asme b16 48 for. We typically machine our spectacle blinds using a single piece of metal but for larger size blinds we often craft these from two metal discs that are attached to.

Blind flange dimensions are covered in asme b16 5 which covers pipe flanges and flanged fittings for size nps to 24 for above nps 26 to 60 it should be as per asme b16 47. During dimensional inspection of flange you should check for following. An 8 blind or a spectacle blind is a piping fitting that is used for providing positive isolation. 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.

A spectacle blind is basically made up of two metal discs attached to each other by a metal strip as shown in the figure. Flanges table flanges dimensions flanges standard chart flanges size chart india. Class 150 spectacle blind line blank. Uae saudi arabia qatar oman malaysia sinagapore indonesia sudan israel south africa kenya metal industries is a professional steel flanges and forgings manufacturer in india specialize in manufacturing.

Asme b16 48 standard that covers line blanks. 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 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. Stainless steel spectacle blind flanges.

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. A spectacle blind is used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. Astm a 182 a 240 f 304 304l 304h 316 316l 316ti 310 310s. Flanges table flanges dimensions flanges standard chart flanges size chart we export.

Ansi b16 5 spectacle blind flange material specification. Wt thickness of the web or tie bar should be 6 mm minimum or equal to thickness t if less than 6 mm. Outer diameter of body.