In a piping plan illustrated, the flush connection noted for the inboard seal of a dual seal may originate from a number of suitable sources. Popular piping plans commonly used in pipeline pumps include. Jun 24, 2011 flowserve pss 4 split seal installation. For the corresponding asme b73 piping plan designation. Recirculation from pump discharge through flow control orifice to the seal. Flowserve has focused on seal selection based on application and industry. There is limited published information guidance as to which plan will offer the most suitable solution for any particular application. Piping plans are designed and operated with a focus on improving the seal performance. John crane is an american company, now a subsidiary of smiths group and provider of engineered products and services including mechanical seals, couplings, hydrodynamic bearings, seal support systems, filtration systems and artificial lift.
Customer specific variants of these plans are possible. These are standardized flushing piping arrangements that are widely used in the. This p50 seal is a cartridge mounted mechanical seal, designed for. A few basic components and principles in mechanical seal design contribute to a working seal at the interface of the rotating shaft and stationary pumpmixersealchamber housing. Flowserve, flow solutions group garlock sealing technologies hydroergoseal, inc. The plan 53a is historically the most common method used to. Mechanical seal piping plans 4th edition product process dual liquid quench leak detection dual gas containment introduction and piping practices.
The selection and design of dual pressurized liquid sealing systems michael huebner principal engineer flowserve corporation pasadena, tx, usa. Based on a modular design system, the ecpj pump provides dependable performance while offering maximum mechanical and hydraulic design flexibility. Fsd101 products servicesrev 3 how mechanical seal work. Considerations in the selection of dual pressurized seal. Advancements in mechanical sealing flowserve corporation. Piping plans and seal support systems assist the environment of the mechanical seal itself by providing cooling, flushing, pressurization and instrumentation. Our industryleading portfolio of pumps, seals, valves and actuation. Cleaning a mechanical seal for agitator is generally run during cip clean in place at low speeds. To check out mechanical seal flushing arrangements and piping plans, i have consistently found this to be the most useful. Integral internal recirculation from the pump discharge to the seal chamber. Mechanical seal piping plans single seals dual seals. Most common plans and sealing systems plan 53b plan 53c plan 52 used where the pumped product is. To order replacement parts, refer to the part code and bm number.
This guiding booklet provides a condensed overview of all piping plans established by the api 682 4th edition guidelines. Plan 03 circulation between the seal chamber and the pump created by the design of the seal chamber. Mechanicalsealpipingplansjohncrane 11 pdf drive search and download pdf files for free. Piping plans seal supply systems mechanical seals configuration 3cwfb. The selection and design of dual pressurized liquid. The api plans elaborated in this section are as defined by api 682 3rd edition api 610 10th edition. Increase seal chamber pressure and fluid vapor margin. All of this makes flowserve seals the industrys top choice for the most demanding environments. The resulting work, api 682 fourth edition continues the tradition as the leading. L and u user instructions english 85392721 1108 page 4 of 32 1 introduction and safety 1.
Some of this information includes coverage of general piping plan descriptions but there is very little information on choosing the correct piping plan and understanding the implication of this selection on the design of the seal and operating characteristics of the sealing system. Determine the best piping plan for supporting mechanical. Api piping plans help to ensure good conditions for mechanical seal operation as well as improving safety and pump reliability. Each illustrated piping plan is briefly described, and a recommendation that considers the. Dual seals water compatible processes dual seals are selected when there is a need to modify the seals operating environment andor contain the process media in the event of a fault condition. Hsh seals are balanced, flexible stator cartridge seals with drive mechanisms and seal face geometries engineered for high torque loads and longterm performance. There are a number of standardized strategies or piping plans to provide the pressurized barrier fluid and these are defined in api 682. Installation operation maintenance 682 seal cooler flowserve. Recirculation from pump discharge through a orifice to the seal. Some of this information includes coverage of general piping plan descriptions but there is very little. Eagleburgmann api piping plans overview process side between seals atmospheric side engineered.
The data sheet is in fillable pdf format and may be saved. The cameron hydraulic data book is a flowserve corporation publication and, as in the previous nineteen editions, is published as an aid to engineers involved with the selection and application of pumping equipment. Hsh seals are built for extended reliability in high pressure, high speed and highly viscous services such as mainline crude oil pipeline pumps. Piping plans help keep mechanical seals running cool and clean, promote safe handling of dangerous fluids, and extend the operational availability of rotating equipment. Plan 03 plan 65b plan 66a plan 66b what seal flush from pump discharge. Because the circulated fluid returns to the pump suction and must be repumped to discharge on each. Importance of piping plans introduction the key to maximizing mechanical seal reliability and minimizing total cost of ownership is in controlling the environment in and around the seal. Mechanical seal piping plans flowserve corporation. This reference book provides a concise summary of the most. Eagleburgmann offers a wide range of high quality mechanical seals and supply systems which fully comply with api 682. A piping plan, as any other system in the plant, must be operating correctly to achieve the desired results. After a storage period described in fis222, flowserve mechanical seal and seal support system storage, the mechanical seal must be inspected for its as new properties.
Added mechanical seal configuration code and material classification. All red plastic capsthread guards are for shipping protection only and should be replaced with either a piping connection or. Mechanical seal guidelines flowserve basic recommendations for the selection of a seal arrangement and piping plan s category 1 2 and 3 2 and 3 2 and 3 arrangement 1 2 3 seal arrangement 1 seal arrangement 2 seal arrangement 3 configuration 1cwfx 2cwcw 2nccs3cwfb. Description this p50 seal is a cartridge mounted mechanical seal, designed for ease of installation and reliable operation. In 1942, at the manchester oil refinery in england, a mechanical seal was designed by porges who was chief engineer of the solvent refining and dewaxing plants. The isc2 seal requires a clean, cool environment for maximum seal life. Common types of dual seals are addressed in another article.
With assistance from the flowserve services and solutions team, all engagements are tailored to meet. This guide includes illustrated pump crosssections and piping plan schematics as well as a description of the purpose, typical applications and preventative maintenance tips for each plan. Reference made to hydraulic institute fluid circulation piping plans. Determine the best piping plan for supporting mechanical seals in vertical pumps understand how different pump types impact seal chamber pressure. Api piping plans applicable for 3cwfb configuration process side atmospheric side plan 01 integral internal recirculation from the pump discharge to the seal chamber. Mechanical packing m500 is designed to seal shutoff and con trol valves, plunger and lowspeed centrifugal pumps, mixers operated in chemically aggressive fluids, sol. Api 610 vs4 vertical sump pump 3 the flowserve ecpj is a rugged, single stage vertical lineshaft sump pump designed to perform tough jobs reliably, under a variety of difficult conditions. Mechanical seal products and services catalog flowserve. The total length of connection piping between the mechanical seal and the auxiliary system should not exceed 5m 16. Originating from the flowserve gw gas seal used in sundyne lmc inline compressors, the flowserve gw liquid seals are traditional, flatfaced, hydraulically balanced, odpressurized, stationary multispring pusher end face mechanical seals run. Remove all plastic shipping plugs and properly seal or attach piping. Contact flowserve for additional piping plan information or technical support. Flowserve products are designed, developed and manufactured with stateoftheart technologies in modern facilities.
Mechanical seals are usually endface seals or rotatingface seals, but in some designs they can be circumferential or even a hybrid of liptype seals. Mechanical seal piping plans john crane books mechanical seal piping plans john crane eventually, you will extremely discover a supplementary experience and success by spending more cash. Since most seals have no visible mechanical seal performance and related calculations. Considerations in the selection of dual pressurized seal piping plans part 2 dual mechanical seals are commonly used to provide enhanced equipment reliability for centrifugal pumps and other rotating equipment. These are standardized flushing piping arrangements that are widely used in the industry. See flowserve piping plan guide fta160 or your local flowserve representative for best practice guidelines for installation of plans 53a, 53b or 53c. Flowserve is the recognized world leader in supplying pumps. Flowserve alliance programs are focused on optimizing seal and rotating equipment performance. For example, the flush for piping plans 1175 or 3275 may be the product plan 11 or an external source plan 32. Different types of pumps mechanical seal piping plans are detailed in api 682 or iso 21049 standards. Mechanical seal for agitator flowserve agitator seal mixer. All three plans require some type of makeup system for. Mechanical seal guidelines flowserve basic recommendations for the selection of a seal arrangement and piping plans category 1 2 and 3 2 and 3 2 and 3.
Besides the seal design and the piping plan the pump. Let a flowserve pipeline seal specialist finetune the piping plan to optimize your seal life. The flow of the flush fluid must be sufficient to remove the heat from the mechanical. One of these strategies, a plan 53c, utilizes a piston accumulator to pressurize the system. Data may be updated at a later time, and printed or. Please contact aesseal systems division for further details. Pipeline engineering or pumpsexpanders note that the balance is per unit mass. Porges had been actively interested in the development of mechanical seals for some time. To find your local flowserve representative and find out more about flowserve corporation visit. Integral internal recirculation is from pump discharge.
The api 682 task force worked to incorporate the industry needs and new technology into the new standard. John crane is an american company, now a subsidiary of smiths group and provider of engineered products and services including mechanical seals, couplings, seal support systems, filtration systems and. These piping plans define the functions, design, and operation of these solutions and allow end users to effectively apply them to the new sealing challenges. Standard flush plans for mechanical seal plan 01 see figure 1. No other mechanical seal company has the technological leadership, product breadth, service and support, financial. This seal was to solve sealing problems in a liquid sulphur dioxide pump. The success of your application isnt just about seal design. In the critical sealing of boiler feed and boiler circulation water, flowserve continues to innovate new technology to optimize and extend performance. This reference book provides a concise summary of the most essential piping plans used successfully in todays process plants. An api plan 53aansi 7353a is a pressurized dual seal system which is used in services where no. Station operators turn to flowserve to provide a safer, lower maintenance working environment. We find a way piping plan 12 discharge recirculation with strainer piping plan 32 clean flush piping plan 538 closed loop with heat exchanger and accumulator 4400 gas seal use with single seal cools seal lncreasespressureinseal chambef throat bushing optional clea nfluidso ty.
It provides a constant supply of clean, cool and pressurized barrier fluid to the faces of the dual mechanical seal. What deadended seal chamber with recirculation from seal chamber no flush. Improvements in piping plans have made seal installations more reliable. Plan12 is used to protect orifice and seal face in. Seal support reservoir installation instructions flowserve. All piping plan designations used in these instructions are from api 682. It also depends on selecting the right model, design options, materials, arrangements and piping plans. This is obvious since this is the purpose of providing the piping plan in the first place. This is an internal recirculation from the pump discharge into the seal.
The presence of a pressurized barrier fluid between the two seals makes the seal less dependent on the pump process fluid. Product recirculation from pump discharge to seal chamber through a flow control orifice and seal chamber back to suction through another flow. Common types of pumps mechanical seal piping plans. The selection and design of dual pressurized liquid sealing. A mechanical seal can be sipd internally for sterilisation. To find your local flowserve representative and find out more about flowserve corporation, visit. Reduce risk of freezingpolymerizing fluid in exposed plan 11 piping. This catalog will familiarize you with select mechanical seal products, seal support systems and services.
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