Flat out pattern for eccentric reducer calculation. The length of the reduction here is equal to an average of the smaller and larger pipe diameters. Eccentric reducer article about eccentric reducer by the. Outside diameter at bevel outside diameter at bevel nominal pipe size nps large end small end endtoend nominal pipe size nps endtoend 26 x 24 660. A doubletapped bushing is a fitting which serves as a reducer.
Reducer equations in crane tp410 engineered software. Eccentric reducer formula products are most popular in united states. Anvil standard and extra heavy cast iron threaded fittings are manufactured in accordance with asmeb16. Concentric and eccentric reducers mss sp75 ansi b16. Od 800 l 2 150 mm od 800 l 2 200 mm 11 additional component to add any additional fittings component. Based on your drawing, the offset between both centerlines would be 2116 2. Eccentric reducers are used in pipework systems to reduce the diameter of a pipe from one size to a smaller or larger size. Dimensions also conform to federal specifications, wwp501 except plugs and bushings wwp471. How to compute concentric reducer template layout formula. The reducer from the oversize barrel to the line pipe should be an eccentric reducer.
This allows the pig to be pushed into the pipeline to make a good seal, ensuring the pig will launch. Sch 5, sch 10, sch 20, sch 10, sch 20, sch 30, sch td, sch 40, sch 40, sch 60, sch x, sch 80, sch 80, sch 100, sch 120, sch 140, sch 160, sch xxs and etc. Flat oval eccentric reducer sheet metal connectors, inc. Pipe reducer dimensions concentric and eccentric reducer. Add the reducer s weld dots with the donut command. The pvc fittings found in this category are all reducing sizes. In case of long horizontal pipe runs, air pockets are avoided by installing the eccentric reducer with the flat side up. Development of an eccentric reducer autodesk community.
Qualified manufacturer zizi exports copper nickel 9010 fittings in customized sizes to peru, they are 8 x 6 std eccentric reducer and threaded fittings. This is a eccentric reducer is a fitting in piping systems between two pipe of difarance diameters. Fluoropolymer barrier frp ductpipe fitting standards. Pipe reducer dimensions concentric and eccentric reducer dimensions as per asme b16. The formula is as under please find attached file for formula final answer x nos of segement u want i. I have an formula of developed angle of eccentric reducer which is not match with the developed part flat pattern angle of eccentric reducer in inventor. The two types of reducer fittings can be described as. Although reducers are usually concentric, eccentric reducers are used as needed to maintain the top or bottomofpipe level. Unlike a concentric reducer, which resembles a cone, eccentric reducers have an edge that is. Form the pattern carefully into the shape of the reducer. Its 12 the difference of the two outside diameters be sure to use nps. The length of the reduction is usually equal to the average of the larger and smaller pipe diameters.
The ability to build your own customised eccentric reducer gives you a real advantage on occasions where time, cost or availability of manufactured reducers cause a problem. How to compute concentric reducer template layout formula piping,welding,non destructive examinationndt common piping angles and their solutions,known and unknown angles and angle chart,solving. Here, the reducer can be used as a diffuser or a nozzle. This vedio show is how to eccentric reducer marking. Where to download eccentric reducer fabrication formula there are 175 eccentric reducer formula suppliers, mainly located in asia. The top supplying country or region is china, which supply 99% of eccentric reducer formula respectively. They are used where the diameter of the pipe on the upstream side of the fitting i. For example, when a 1 pipe transitions into a 34 pipe and the top or bottom of the pipe doesnt need to remain level. An eccentric reducer is a fitting used in piping systems between two pipes of different diameters. Flat oval duct has been designed for restricted space conditions that cannot accept round spiral duct. Therefore, an eccentric reducer is used in pipe racks to maintain a constant bottom of pipe bop see figure. Create the small diameter end of the reducer by drawing an 8 nps vertical line up from the right end of the reducer. It was found that eccentric reducers with angles greater or equal to 15 and concentric reducers with an angle greater or equal to 20 did not pass the assessment criteria related to the inlet conditions.
The concentric reducer centerline of the inlet and outlet is at the same level. Reducer concentriceccentric, buttweld, ansi, wcs in. Cut the inner circle out of the paper, and cut around the outer circle. The concentric reducer is coneshaped, and is used when there is a shift in diameter between pipes. A concentric reducer is used to join pipe sections or tube sections on the same axis.
Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on youtube. Why to use eccentric reducers in pump suction piping. Pvc schedule 40 eccentric reducer couplings are a type of pvc fitting designed for joining two different size pieces of pvc pipe. A eccentric reducer will give a more constant flow through the control valve rather than a concentric which will give your more flow disruption and will cause problems with your control valve failing. Reducer fittings used in pump inlet pipe work are divided into two typesconcentric and eccentric reducers. Concentric reducer is most commonly used and often eccentric reducer used in piping in about pump and pipe rack area. The animated guide walks you through every step of the process of creating a template and fabricating a pipe, ensuring a clear and detailed understanding before even entering the fabrication shop.
This pipe reducer may be used when there is a single diameter change or multiple diameter. Complete the eccentric reducer by drawing a sloping line back to the top of the 10 line, connecting the two vertical ends. Cement mortar lining is the recommended internal lining 9 reducer length specify the reducer length required l1. Concentric reducerthe reduction of the pipe size is achieved by decreasing the diameter of the fitting at a constant rate over a specified length, maintaining symmetry around the. Well, i dont think you meant the centerline offset of the eccentric reducer, in terms of the elevation. Instructions for constructing a concentric reducer hunker. Eccentric reducers an overview sciencedirect topics. Concentric eccentric reducer pipe fittings astm a403.
Concentric reducers and eccentric reducers supplied siddhagiri metals and tubes is a high quality aisi b16. The minimum length recommended for the reducer is calculated according to the formula 4. Carbon steel concentric reducer astm a234 wpb asme b16. Steel pipe reducer can be divided into concentric and eccentric reducer, the common carbon steel grade is astm a234 wpb and wpc.
A steel pipe reducer is a component used in the pipelines to reduce its size from large to small bore in accordance to the inner diameter. The 2009 edition of the crane tp410 includes a new chapter, chapter 3. Eccentric reducers are used in pipework systems to reduce the diameter. Examining differences in reducer equations from chapters 2 and 3. Picture 1 eccentric reducers installation when source of supply is below or above the pump suction nozzle. Concentric reducer, eccentric reducer, concentric eccentric. Concentric reducer fabeasy pipe template development. Eccentric reducer flat section on top allows for transportation of air minimum straight pipe and reducer length required ensures disturbancefree flow ksb 2012 pump manufacturer operating instructions eccentric reducer flat section on top allows for transportation of air jones et al 2008 pump station handbook sapma 2002 pump station handbook. Concentric eccentric reducer pipe fittings astm a403a815b363. Flat out pattern for eccentric reducer calculation petercharles mechanical 12 jun 07 08. The fabeasy training module presents two methods for the fabrication of a concentric pipe reducer.
A reducer can also be used either as a nozzle or diffuser, depending on the mach number of the flow. Long radius elbow,3 types,angle between bolt holes of flanges, pipe template layout. Reducer fittings decrease pipe size to avoid failure. Large size eccentric reducer is a kind of fitting that be used for reducing piping size. You should have a ring of paper remaining with two lines marked on it. Eccentric reducers are traditionally recommended for the pump suction reducer fitting to allow for transportation. A234 wpb concentric reducer dimensions weight chart. Diameters from 21,3 to 711 mm and wall thickness from 2 to 40 mm. Picture 2 eccentric reducers installation in case of long horizontal pipe runs. A reducer allows for a change in pipe size to meet hydraulic flow requirements of the system, or to adapt to existing piping of a different size. Concentric eccentric reducer pipe fittings concentric reducer eccentric reducer. Cut along the two lines and keep the marked piece, which is the pattern for the reducer. Available in a complete range of carbon steels, stainless steels, alloy steels and non ferrous metals certified to astm, asme, and military standards. Large size eccentric reducer steel blogsteel tube and.
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