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. Spectacle flange, spectacle blind flange, figure8 blanks. Buffalo flange s fabrication team will work with you to produce the studding outlet or flange that is right for your project. Spectacle blind flange spacers the shape is similar to a pair of. Fitwel industries llp is the leading manufacturing and supplying of quality ansi b16. Due to the nature of our engineering and our further production programme we manufacture each spectacle plate with utmost care, being convinced that it is just as important as any other item in a plant. Our vast delivery program includes seamless and welded pipes and tubes according to en, astm and api standards, in a wide variety of steel qualities. Where machining is carried out it may be either by spot facing at the bolt holes or by back facing at the option of the manufacturer. What is a spectacle blind flange a spectacle blind flange also known as a figure8 blind is generally a piece of metal that is cut to fit between two pipe flanges and usually sandwiched between two gaskets.
If the file has been modified from its original state, some details such as the timestamp may not fully reflect those of the original file. Gear pump din 2481 spectacle flange din 2481 screw pump din 2481 spectacle flange, open din 2481 screw pump with electric motor din 2481 spectacle flange, closed din 2481 compressor iso 1219 orifice heat exchanger din 2481 flexible pipe electric preheater din 2481 centrifuge din 28. Technical specification of spectacle blind flange haihao. Click the links below to download any of the following documents in pdf format. Spectacle blind flange jackbolt type piping youtube. The basic standard for line blinding for many years.
For pipe flanges that are regularly seperated for isolation, maintenance or other reasons, a spectacle blind may be. As one of the leaders amongst manufacturers, stockist, and exporters of spectacle blinds, asme b16. A faster, safer alternative to a traditional spectacle blind. Pdf isolation of process equipment in oil gas project. At gmi we manufacture paddle blinds and figure8s spectacle blinds in carbon steel, stainless steel, chromes, and any specialty alloy. Find product details of our extensive assortment of steel pipes and tubes, hollow sections, pipe components, bar steel, valves and beams. This is a blind flange, and as the name says, there is no bore in it, just a blind flange.
The hot tools slide blind is a patented and registered fitting which provides a faster, safer and ergonomic alternative to a traditional spectacle blind for the purposes of pipe maintenance and servicing applications in a variety of industrial plant settings. This is another example of a stainless steel flange. The two discs are attached to each other by section of steel similar to the nose piece of a pair of glasses. What is a spectacle blind and can you change on from open to closed inservice without stopping the flow. Stainless steel flanges flangesforgingsflangeforging.
A spectacle blind flange also known as a figure8 blind is generally a piece of metal that is cut to fit between two pipe flanges and usually sandwiched between two gaskets. Shop a large range of blind flanges at msc industrial supply. Meeting service and quality demands since 1986 texas flange provides the following series of individual pages in html and pdf format that contain flange dimensions of the standard flanges we provide. Pdf file sample raised face spec sheet pdf file sample ring joint spec sheet. The spectacle flange can be rotated to place either the solid or hollow end within the pipe system, thereby opening or closing the flow. Spectacle blind flanges van leeuwen pipe and tube group. Single blinds or blanks are positive shutoff devices that prevent flow through a pipeline. 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. These standard dimensions of spectacle blinds are in specified in inches.
Texas flange provides the following series of individual pages in html and pdf format that contain flange dimensions of the standard flanges we provide. Again, its hard to see how the 2 inch fits on it, but the outer diameter matches what a 2 inch flange is. The largest inventory of spectacle blinds figure8 blindblank, eye glass blindblank in any size, rating or alloy. Ansi class 300 up to 2500 flange sizes, thicker or thinner than standard, material options such as stainless or monel are simply not a problem. The information in these pages was compiled from industry sources which texas flange and fitting supply believe to be reliable. The sealing surfaces of a spectacle blind, spade or ring spacer are usually conducted in accordance with the face finish from. A spectacle blind flange is a combination of a spade and a spacer all these three types of spectacle flanges are used in piping systems or pressure vessels where the flow needs to be interrupted from time to time. Import data and price of rtj spectacle blind under hs code. View detailed import data, price, monthly trends, major importing countries, major ports of rtj spectacle blind under hs code 7307. It is different than a valve in that the blind is a permanent or long term isolation device. Amardeep steel centre is one of the leader manufacturers, supplier and exporters of high quality spectacle blind flanges, stainless steel spectacle blind flanges, ss spectacle blind flanges, carbon steel spectacle blind flanges, alloy steel spectacle blind flanges, nickel alloys spectacle blind flanges in. Blind flange class 150 inches pounds service metal.
A spectacle blind combines the functionality of a spacer and paddle blind when isolating pipe. The hot tools slide blind is a patented, registered fitting which provides a faster, safer and ergonomic alternative to a traditional spectacle blind for the purposes of pipe maintenance and servicing applications in a variety of industrial plant settings. Buffalo flange is dedicated to flange quality and customer satisfaction. Spectacle blind flanges, stainless steel spectacle blind.
Din flanges summary chart rated pressure in bar 1 bar 14. Fluoroflo spectacle lineblinds ptfe lined steel or. The thickness of the spectacle blind is specified based on the line pressure and pipe. Our multidisciplined engineering team has a deep understanding of fluid flow dynamics and process piping systems, which enables them to generate andor validate designs and guide you through the material selection process to ensure these isolation devices provide long term safety during pipeline. It incorporates a tough, simple design that provides long lasting service life with minimal maintenance requirements. Spectacle blind flange largest inventory rental or purchase. Technical specification of spectacle blind flange date 21, 2016 categories. For all your blind flange and spectacle blind flange needs, email us or call wats 18002314174 or 79439600. Blinds are used during line repairs, maintenance and turnarounds to indicate where a line is blanked off or open. Jan 10, 2016 a spectacle blind or spec blind, abbreviated as sb, is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. Special flanges spectacle blinds, spades and ringspacers.
A spectacle blind is often made from two metal discs that are attached to each other by a small section of steel. When your projects require specialty flanges, buffalo flange can help. Blinds are offered in machine finish or mill finish. They are installed between one pair of pipe flanges and able to rotate or swing. The pressuretemperature rating of a line blank or line blind should be the same as for the flange joint. Spectacle blinds are generally applied to permanently separating pipesystems, or just to connect with each other. 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 each other by a small section of steel. Spectacle flange manufacturers buffalo flange, inc. Spectacle blind flange largest inventory rental or. A spectacle blind or spec blind, abbreviated as sb, is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. With ring style construction and steel thickness corresponding to ansi class 150 flanges, installation is simplified.
It is a piece of metal that is cut to an open flange circle on one side, and a blind on the other side. Piping line blanks, blinds, spacers, spectacle blinds, ros. To make switching from one to the other, especially in the larger sizes, a bolt hole or slot in the spacer bar is provided for rotation. Keckley quick acting line blinds are commonly found in oil and refinery, petrochemical, pulp and paper, and maritime industries. Figure 8 or spectacle blind, is made by a steel spade and spacer, united by a welded handle. Media in category spectacle blind flange the following 3 files are in this category, out of 3 total. Msc industrial supply is here to support all your metalworking and maintenance repair needs with over 1. Our standard ptfe lined steel lineblinds fit between ansi class 150 flanges in 12 through 12 pipe sizes.
Titans spectacle flanges, single blinds, and ring spacers are crucial pipeline accessories when a section of the pipeline may need to be isolated from the rest. A spectacle blind is often made from two metal discs that are attached to. 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 traditional style of line blind offers a broad range of pressures and a lower cost. There are the technical specification of spectacle bind flange in haihao group.
Flange weight chart weight calculator dimensions and. The shape is similar to a pair of glasses or spectacles hence the name spectacle blind. One of the discs is a solid plate, and the other is a ring, whose inside diameter is equal to that of a flange. Hamer line blind valves ensures positive and visible knowledge that a pipeline is blinded with a rotating spectacle plate that shows flow or noflow. A spectical blind is a combination of both a ring and single spacer. Pipeline blinds or blanks are not the same as bolting blind flanges. No flange or line spreading no special equipment required conforms exceeds asme b16. Spectacle blind, flange spade, ring spacer asme b16.
Standard dimensions of spectacle blind 8 blind enggcyclopedia. A spectacle blind is a steel plate cut into two discs of a certain thickness. What is a spectacle blind and can you change on from open. Spectacle blind may have a different type of joint face rf raised face, ff flat face, rtj ring joint, depending the type of flange. Buffalo flanges fabrication team will work with you to produce the studding outlet or flange that is right for your project. Oil and gas flanges, pipe fittings and more gmi group.
This file contains additional information such as exif metadata which may have been added by the digital camera, scanner, or software program used to create or digitize it. The spectacle blind is usually used on the oil line with two different functions. Spectacle blind flanges are widely used in special circumstances with their main advantage being that they can be attached to the pipe without welding. A spectacle blind is a safety device used to isolate a section of line or piece of equipment when the line or equipment needs to be inspected or removed from service. Again, 2 inch, 150 pound, blind flange, no bore in it. The difference is that spectacle blinds may need some space to be rotated, and this space is not always available due to the routing of the piping system. A spectacle blind is a safety device used to isolate a section of line or a piece of equipment when the line or equipment needs to be inspected or removed from service.
One end of the spectacle flange is solid, while the other end has a hole in the center. Ipss stock a wide range of spectacle blinds from quality approved european material that conform to industry standards, dimensions and client specific designs. A spectacle blindis a combination of a single blind solid plate and a ring spacer manufactured, for field convenience, as a single unit. At gmi we manufacture paddle blinds and figure8sspectacle blinds in carbon steel, stainless steel, chromes, and any specialty alloy. After turning 37 jack bolts around the body to make a. Jan 25, 2018 the traditional style of line blind offers a broad range of pressures and a lower cost. Dec 21, 2015 a spectical blind is a combination of both a ring and single spacer. Spectacle blinds should be made from a plate or forging specification, approved for use by asme b31. Spectacle blind flanges, spectacle blind flange, spectacle flanges, spectacle blind flanges manufactory.
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