A spectacle blind is used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. Spectacle blinds should be made from a plate or forging specification, approved for use by asme b31. Paddle blank type 1 click any image above to enlarge it and lock it in place, then scroll 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 size. Spectacle blind flanges are forged products used to blind pipelines temporarily or permanently. This is done to isolate a piece of process pipe, or equipment such as storage tanks. These are normally used in piping systems, usually between two standard flanges, and are designed to block off a section. Spectacle blind flange china piping solution supplier. A spectical blind is a combination of both a ring and single spacer. Stainless steel spectacle blind flange manufacturers, ss.
Spectacle blind flange, stainless steel spectacle blind. Thank you extremely much for downloading api 590 spectacle blind. Spectacle blind flange manufacturers in india spectacle blind flange raised face, spectacle blind flange dimensions spectacle blind flange asme b16. Line blanks used only for pressure testing are not part of thisstandard. All keddco spec blinds are manufactured to asme b16. Alloys spectacle blind flange alloy 20, alloy c, alloy c276, alloy b2. Spectacle blinds or line blanks are flat plates sandwiched between flanges for positive isolation of process fluid. Wide stockists of stainless steel spectacle blind flange, asme b16. It is not like a valve, the spectacle blind flange is a permanent or long term isolation block. A figure 8 blank also called a spectacle blank is a pressure retaining. Spectacle blinds are another somewhat uncommon but important application for gaskets. As 2129 steel plate blind flanges global supply line.
Includes both mss sp44 series a and api605 series b ratings. The two discs are attached to each other by section of steel similar to the nose piece of a pair of glasses. As 2129 steel plate blind flanges f1 t6 v f p d table d dimensions mm size flange outside diam. A spectacle blind is a combination of a single blind solid plate and a ring.
Spectacle plate is made from stainless steel material as a standard. A figure 8 blank also called a spectacle blank is a pressure retaining plate with one solid end and one open. Usa industries figure 8 or spectacle blinds are a single piece of machined metal and therefore eliminates the hassle of having seperate paddle blind and ring spacer sets. Flange fittings, forged flanges, welding neck flanges landee. A spectacle blind is machined from a single piece of metal that is cut to match the pipe size, fit between two pipe flanges and requires. Our flange factory is located in mengcun county,cangzhou city,hebei province,we are specialized in the production of forged steel flanges,plate steel flanges. 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. Spectacle blind dimensions class 150 to class 2500. High yield spectacle blind flange astm a694 f42, f52, f60, f65, f70. Raised face bolting details flange thickness net weight diam. The spectacle blind flange manufacturers in india produce different kinds such as the stainless steel spectacle blind flange or different classes such as the spec blind. 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. A line blind is a safety device that is used to shut off or blind off the product flow in a process pipe. Handle or tie bar hole is same size as flange bolt hole.
These are three different components that used in piping for positive isolation of the section of a. Carbon steel spectacle blind flange astm asme asa 105 astm asme a 350, astm a 181 lf 2 a516 gr. Traders of en 10921 type 02 spectacle flange in india, asme b16. A spectacle blind combines, in one single product, a flange spade and a ring spacer. We provide a large selection of ltcs flanges available in ltcs pipe flanges in best quality. Flowell spectacle figure 8 blinds thicknesses are in accordance with api 590 to assure that these units will withstand the temperature and pressure of an ansi rated flange. Mss sp44 spectacle blind flange manufacturer, check dimension of asme b16. Astm asme sa516 grade 606570 spectacle blind flange. The top countries of suppliers are india, china, from which the percentage of. These devices are costeffective alternatives to isolation valves. Ff spectacle blind mating rf flanges pipelines, piping and. Low temperature carbon steel flanges, astm a350 lf2 ltcs slip.
To best serve our customers, strahman stocks line blinds from 12 dn15 to 24 dn600 in 150 lb. Spectacle blinds, female rtj design as per asme b16. Api 590 spectacle blind flange 12 inch spectacle blind. All of our cs a516 spectacle blind flanges, bs4504 spectacle blind flanges, ansi b16. Hebei haihao flange factory,established in 1982,is one of the biggest flanges manufacturer in china. As m p jain tubing solutions llp is one of the leaders amongst manufacturers, stockist, and exporters of spectacle blinds, asme b16. Dec 21, 2015 a spectical blind is a combination of both a ring and single spacer.
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. We keep bulk stock of asme ansi, en, din, afnor, awwa, gost, bs, jis, as, mss, sa, uni low temperature carbon steel astm a350 lf2 flanges for quick delivery to our clients. Spectacle blind, slip blind and spacers paddle blank and spacer spectacle blind, spades, and spacers are also known as figure8, paddle blank, slip blind, and spacer. Ff spectacle blind mating rf flanges pipelines, piping. Line blanks used only for pressure testing are not part of this standard. A spectacle blindis a combination of a single blind solid plate and a ring spacer manufactured, for field convenience, as a single unit.
Spectacle blind flange spectacle flange is also called figure8 blind flange, it is made of two pieces metal discs which are joint together by a part of steel handle. One of the discs is a solid plate, and the other is a ring, whose inside diameter is equal to that of a flange. 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. Pn 6 flanges din en 10921 dimensions of pn 6 flanges din. Spectacle blind, slip blind and spacers paddle blank and.
Dimensions of class 600 blind and spacer t weld 125 to 250 rms o weld o b t asme b16. Class 600 rf class 2500 rf diameter inches outside dia. Any thickness, rating or alloy is available upon request. When a section of your pipe needs to be isolated from the rest for maintenance, a spectacle blind will make the process much easier. Low temperature steel spectacle blind flange astm a350 lf2, lf3, lf6.
We developed a line of unique, quick action line blinds that combine easeofuse with the ultimate in operator safety. There are three places in 29 cfr where line blinds are specifically noted as a safety device. Spectacle blind flanges manufacturer suppliers in india. A figure8 blank also called a spectacle blind is a pressure retaining plate with one solid end and one open. A spectacle blind is a steel plate cut into two discs of a certain thickness.
We also have engaged in research and design in flanges,rings,customized forgings, and have made excellent achievements in the high. Flange manufacturer landee supplies weld neck flange wn, long welding neck flange lwn, lap joint flange lj, blind flange blank flange bl, slip on flange so, thread flange thr, socket weld flange sw, reducing flange, orifice flange, anchor flange, spectacle blind flange figue 8, spacer ringspade flange etc. Ff spectacle blind mating rf flanges gerhardl mechanical 30 nov 15. Rf ff design to be inserted between flanges with flat seals or. Paddle blind dimensions thickness chart usa industries, inc. Special flanges spectacle blinds, spades and ringspacers. We can manufacture spectacle blind flange with different type of joint face rf, ff, rtj in material a516 gr 70,a182 f316l spectacle blind flange in according to major dimensional standards asme b16. Spectacle blind, slip blind and spacers paddle blank and spacer. 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. Steel mart india is trusted supplier of stainless steel spectacle blind flange to singapore, philippines, thailand, uk, bahrain, india, malaysia, indonesia, kuwait, vietnam, oman, qatar, south africa, saudi arabia ksa, united arab emirates uae. The spectacle blinds, spades and spacers are flame cut from plate material and are machined with a smooth or stock finish gasket contact surface. We can manufacture spectacle blind flange with different type of joint face rf, ff, rtj in material a516 gr 70,a182 f316l spectacle blind flange in according to. List of articles in category spectacle blind rf dimensions. It is different than a valve in that the blind is a permanent or long term isolation device.
The name comes from the fact that the assembly looks like eyeglasses, or spectacles. These are three different components that used in piping for positive isolation of the section of a line or equipment during maintenance and shutdown. 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. Spectacle blinds, spades and spacers are manufactured in accordance with clients requirements in any required material with any required certification.
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