Pdf file introduction to piping engineering piping guide. Realistically though, a concentric also has a shoulder but normal velocity will move the air right through. Lanl engineering standards manual pd342 chapter 17 pressure safety section d20b31. Sep 18, 2017 a reducer is a kind of pipe fitting used in process piping that reduces the pipe size from a larger bore to a smaller bore inner diameter. Spray type desuperheater piping for use on steam generators and. Eccentric reducer, large size eccentric reducer, buttwelded. High pressure concentric reducer high pressure concentric reducer is a kind of fitting that be used for reducing piping size.
Free full version and viewer of piping stress analysis software startprof. Steam service was another that i saw with preferred orientation fob. That ensures that any bubbles that come along the top pass immediately through the pump and do not accumulate. There are only 2 main types of reducer expander joints concentric and eccentric. The arrangement also leaves significant liquid level which can not be pumpedwhen eccentric 3 is on bottom of 6 suction, there is greater tendency to pull. Find eccentric pipe reducer related suppliers, manufacturers, products and specifications on globalspec a trusted source of eccentric pipe reducer information. In doing my research, i have seen that although the preferred orientation of eccentric reducers is fot for pump suction piping, in applications that handle slurry service, the preferred orientation is fob to avoid slug flow. Fire pump sizing the estimated performance of the fire pump between 100% and 150% of rated flow can be calculated using the following formula. Eccentric reducer stainless steel eccentric reducer ss. When eccentric 3 is on top of 6 suction, there is a greater tendency to pull entrained gas. Solidworks file with all its configurations for a pipe eccentric reducer astm a403 weldon fitting. Straight fittings are machined from cold finished bar stock and shaped fittings from forgings. The following link shows best piping practices for reducers. An eccentric reducer is a fitting used in piping systems between two pipes of different diameters.
Temperaturepressure cross reference for malleable iron reducers sizes are nominal pipe size nps size chart. A wide variety of eccentric reducer formula options are available to you, such as head code, shape, and connection. The principal benefit to eccentric reducers are in steam systems. Sandvik offers a large stock range of stainless steel butt welding reducers according to asme. On the condensate line, the control valve is between a. Piping components free download as powerpoint presentation. Conform to astm a403, astm a960, mss sp4, astm b16. Ua star mastery exam pipe fitter study guide pftf597. Fitting, sanitary reducer, eccentric, both ends tri. Reducerexpander in steam condensate line posted in industrial professionals. In hot water there is no real harm so long as they are run flat on top to keep air moving.
Duwa piping can deliver flange and pipe fitting exworks in 3. For example, when a 1 pipe transitions into a 34 pipe and the top or bottom of the pipe doesnt need to remain level. Lined piping systems concentric reducer plastic lined pipe use. Eccentric reducers an overview sciencedirect topics. 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. Malleable iron reducing couplings are available in both black and galvanized finishes. Eccentric reducer is recommended for horizontal flow to the pump. Pipe eccentric reducer, sch 20, butt weld 0086315150339. A reducer is a kind of pipe fitting used in process piping that reduces the pipe size from a larger bore to a smaller bore inner diameter. Journal of the south african institution of civil engineering volume 56 number 3 october 2014 65. How to marking eccentric reducer on pipe part 2 youtube.
There are 2 standards, the concentric reducer, is usually used in vertical pipe lines, and the eccentric reducer that is used in horizontal pipe lines. This vedio show is how to eccentric reducer marking. Nov 18, 2017 this vedio show is how to eccentric reducer marking. History for over 150 years, anvil has been a trusted name in piping solutions by consistently providing quality products, service, and support to the pvf industry. The reducer has two parallel ends that are offset to one another so that the. As you undoubtedly know pumps are designed to develop head so the pump can be sized to deal with any losses you design on the discharge. Some ua textbooks contain questions, which provide excellent practice material.
The knife is a group you can rotate, change the size of, and even add or remove objects within example add a function curve for an advanced cut. Gaskets, nipples, unions, valves, reducers, steam traps, bellows. Concentric reducer is recommended for vertical inlet suction piping or horizontal installations where there is no potential for air vapor accumulation. The computeraided design cad files and all associated content posted to this website are created, uploaded, managed and owned by third party users. When the source of supply is below the pump, then the eccentric reducers must be placed with the flat side up. Dynamic block concentric and eccentric reducer example 36. Eccentric pipe reducer library from 4 to 12 3d cad model. Assuming that you have an eccentric reducer defined in your routing preference, you can simply change the justification of the pipe to something other than center for example if you want the right edge straight, then. Stainless steel 304304l pipe fitting, eccentric reducer. It is therefore common practice to install eccentric reducers and on liquid lines that carry a little. In horizontal gas vapor steam piping, eccentric reducer must be. Eccentric reducers,stainless steel eccentric reducer,cast.
Petrochemical machinery insights is a priceless collection of solutions and advice from heinz bloch on a broad range of equipment management themes, from wear to warranty issues, organizational problems and oil mist lubrication, and professional growth and prepurchase of machinery the author draws on his industry experience to hone in on important problems that do not get addressed in other. Weld x weld concentric reducer made from 316l stainless steel. Eccentric reducer, large size eccentric reducer, buttwelded eccentrice reducer, buttwelded eccentrice reducer, welded eccentric reducer size range. Standard there are 2 possibilities, the concentric reducer, is usually used in vertical pipe lines, and the eccentric reducer that is used in horizontal pipe lines. Piping includes pipe, flanges, fittings, bolting, gaskets, valves, and the pressure containing. A common example of using an eccentric reducer in a flat side up arrangement is in pump suction piping immediately before the pump nozzle in order to avoid creating a vapor trap in the line. When the source of supply is above the pump, then the eccentric reducers must be placed with the flat side down.
Eccentric reducers are used in piping systems to connect pipes of two different diameters. Free magazines and e books faqs in interviews advertise with us. Concentric reducer is most commonly used and often eccentric reducer used in piping in about pump and pipe rack area. Victaulic field installation handbook or manual for. The heat flow to the reboiler is controlled by controlling the flow of condensate. Apr 30, 2003 eccentric reducers for pump suction posted in industrial professionals. Lined piping and components can be made by one of the following. An eccentric pipe reducer fitting is manufactured with the smaller outlet off center to the larger end, which allows it to align with only one side of the inlet. Eccentric reducers at pump suctions which orientation. Shaw stainless offers weld fittings in 304 and 316l stainless in a variety of sizes. Minimum straight lengths of pipe are required ensures disturbance free flow eccentric reducer.
High pressure concentric reducer, a234 wp91, ansi b16. Stainless steel schedule 10 butt weld eccentric reducer pipe fittings available in a312 compliant dual certified 304304l or 316316l stainless steel. For over 150 years, anvil has been a trusted name in piping solutions by consistently providing quality products, service, and. Mechanical piping systems general product catalog victaulic. How to have eccentric reducers automatically placed. Eccentric reducer couplings connect two pipes of different sizes that are not along the same pipe axis. In horizontal gas vapor steam piping, eccentric reducer must be installed with flat side down which allows condensed water or fluid to drain at low points. Control valves and eccentric reducers dtn6770 mechanical 22 dec 06 00. Sarda piping is manufacturer of high grade steel eccentric reducers since 1999,ready stock available of butt weld eccentric reducers, stainless steel eccentric reducers, low alloy steel eccentric reducers, asme b16. We are involved in the production and designing of a mechanically appropriate variety of butt weld reducers that is being offered by means of an authorized certificate. The piping systems covered include water, fire protection, steam, building services, oil, gas. Stainless steel sanitary weld eccentric reducers are used on permanent installations where process piping and equipment can be cleaned in place cip and removal from the system is not required. In concentric reducer the reduction of the pipe size is achieved by. When the upstream pipe is smaller, the tapering pipe is called an expander.
Transfer lines between facilities such as waste or steam transfer lines that. Flat side down eccentric reducer are often be used in pipe racks to keep. Antistatic liners to prevent static build up within piping on site. After bending, the finished surface should be free of cracks and substantially. Join the grabcad community today to gain access and download. This vne maxpure asme bpe compliant biopharm fitting is available with the following finishes. This configuration prevents air pocket accumulation at the upstream end of the reducer. Join 5,080,000 engineers with over 3,040,000 free cad files join the community. Reducers be applied, to change from pipe diameter in one direction.
The arrangement that we use is shown in the attached drawing. Eccentric reducers are traditionally recommended for the pump suction reducer fitting to allow for. Piping and piping components part iii valves introduction gate valve. Pipe is lead free and brass fittings with lead are no longer permitted by code to be. Eccentric reducer by service pipelines, piping and fluid. The pipe supports must have a smooth, flat bearing surface, free from burrs or. Steam piping design guide steam piping design guide engineering guide steam specialty. This presentation covers the basics points of piping, which are meant for those persons who are first time entering. The eccentric pipe reducers allow simple connection of different sized pipes. Eccentric reducer is most commonly used and often eccentric reducer used in piping in about pump and pipe rack area.
Pipe fitters handbook april 2012 for the most current productpricing. Download as ppt, pdf, txt or read online from scribd. Shaw carries a full line of stainless steel sanitary weld eccentric reducers. The configuration table was created with a astm a403 table downloaded from the internet. Michael frankel, cpd i facility piping systems handbook michael frankel.
Pipe eccentric reducers, schedule 20, butt weld ends, astm a234 wpb, 28 x 20 inch dn700 x dn500, ansiasme b16. This is a eccentric reducer is a fitting in piping systems between two pipe of difarance diameters. The grabcad library offers millions of free cad designs, cad files, and 3d models. For more details or special application, contact your local distributors.
Reducerexpander in steam condensate line industrial. Except as allowed in the notice to users and in certain licensing contracts, no part of this book may be reproduced, stored in a retrievable system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of the publisher. In a plant that we are designing, the heat to the reboilers in the distillation column is supplied by lp steam. How to have eccentric reducers automatically placed through autolayout.
Figures 90 thru 95, courtesy of kents mechanical engineers handbook. Stainless steel schedule 10 pipe fittings eccentric reducers. Lined piping systems consist of straight pipe lengths. Pipe eccentric reducer, sch 20, butt weld duwa piping. You can also make your own knife by naming a group theknife. Fully functional 30day one month free version of piping stress analysis software package startprof is available for everyone at demo. Reducer is a kind of fitting that be used for reducing piping size. The concentric reducers, which permit a small amount of soditim to be trapped in a heel in the test section during draining, simplify the analytical effort required to establish the stress intensities in the reducers as compared with eccentric pipe reducers. All components are flanged and, as such, involve a great deal of care in bolting and tightening to complete a pipe installation. A cast ferrous material in which the free graphite is in a spheroidal form rather. Length of reducers the length of a reducer is very short in relation to the diameter, so in some dimensions the transition. The reducer must be installed with straight side up so that it can prevent trapping air at the pump suction. Generally cast steel with pfa lining, with flanged end connections. A concentric reducer is used to join pipe sections or tube sections on the same axis.
Steam system design and best practices related to kiln drying. Eccentric reducer, large size eccentric reducer, butt. Steam injectors and other essential appliances for the live steam brotherhood. Astmasme a403 buttweld fittings reducer, butt weld concentric reducers, pipe fittings eccentric reducers. Eccentric reducers are pipefitting with different nominal diameters on. Hi pipeman1984, yes, it is common practice to orient eccentric reducers both flat side up and flat side down. For steam distribution systems you should allways use eccentric reducers, with the bell part on the top of the pipe. Lined piping systems concentric reducer pacific hoseflex. Pdf mainly, this presentation covers the pipes and fittings of piping system. Piping always pitched in the direction of flow use of eccentric reducers to eliminate creation of. Pdf carrier series new edition part 3 piping design annalyn. The concentric reducer is coneshaped, and is used when there is a shift in diameter between pipes. They are used where the diameter of the pipe on the upstream side of the fitting i.
A reducer allows for a change in pipe size to meet hydraulic flow requirements of the system, or to adapt to existing piping. The book helps readers to recognize when they may be operating. Download free e books on process piping engineering. All the individual configurations has its own part number that will show in your bill of materials. Reducers designed to ensure free draining of horizontal pipe lines. It is therefore common practice to install eccentric reducers and on liquid lines that carry a little gas the flat side of the reducer is put on the top.
Eccentric reducers are used when the top or bottom of the line. The merit brass eccentric reducing coupling is a schedule 10 stainless steel 304304l buttweld pipe fitting for joining two eccentric pipes of different sizes. Things you must know when you do piping design piping guide. For example 6 suction pipe from tank going to 3 suction flange on pump. For pitched steam pipes, refer to table 22, page 82, for support spacing when schedule. Control valves and eccentric reducers pipelines, piping. Stainless steel sanitary weld eccentric reducers sanitary. Nipples, unions, valves, reducers, steam traps, bellows. Journal of the south african institution of civil engineering volume 56 number 3 october 2014 65 technical paper journal of the south african institution of civil engineering vol 56 no 3, october 2014, pages 6576, paper 1070 ross mahaffey pr eng, who is an associate member of saice, obtained his beng civil and.
The flanges are allowed to float free and can swivel which is useful when pipes are. This is done to prevent a water level developing in the bottom of the pipe which contributes to water hammer. This coupling has buttweld, beveled openings for welding pipes together. Equipment and piping free download as powerpoint presentation. Unlike a concentric reducer, which resembles a cone, eccentric reducers have an edge that is. Piping always pitched in the direction of flow use of eccentric reducers to eliminate creation of condensate collection points low spots in piping.
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