We know that you need reliable seal performance to maximize process. Mechanical seal technology and selection eagleburgmann. John crane type 2, ky type 2, elastomer bellow shaft seals. The john crane type 48 is the seal on which our api 682 offering is based. Sealing systems for pumpssealing systems for pumps part i. They allow easy repair, reduce inventory, and permit a simple conversion to unbalanced or wedge seals.
Read all instructions in this manual before operating pump. 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 artificial lift. Plan single seals flush thru seal chamber thru orifice to suction. Flush plan 54 includes piping and fittings to provide barrier fluid to the double mechanical seal. Increase seal chamber pressure and fluid vapor margin. Api plan 75 a containment seal chamber leakage collection system for condensing or mixed phase leakage on arrangement 2 unpressurized seals with containment seals. This website uses cookies to ensure users have the best online experience. Product documents search for product documentation. Plan 53aa pressurized gas blanket in the reservoir. Mechanical seal products and services catalog flowserve. Get specific measurements, component limits, and installation guides for a wide range of products in just a few clicks. Flexaseal provides a wide range of john crane mechanical seal replacements.
With aura, operators gain access to localized technical expertise from the largest global service network in the industry with over 200 service engineers located worldwide. The complete cross reference for mechanical face seal replacement how to use this catalogue. Plan 65 monitoring atmospheric seal leakage plan 71 dry running containment seals. Plan 53a uses an external reservoir to provide barrier fluid for a pressurized dual seal arrangement. Reservoir pressure is produced by a gas, usually nitrogen, at a pressure greater than the maximum process pressure being sealed. Shelby scottshelby scott western region john crane incjohn crane, inc. Download ky type 2, john crane type 2, elastomer bellow shaft seals.
John crane lemco seal support systemsinclude type 28xp and 28at panels in tandem and double configurations. Company installation and operation manual selfpriming centrifugal pumps important. Describes all sealing plans in most simplified manner. We make the world safer, healthier and more efficient.
To find more books about john crane seal plan chart, you can use related keywords, for examples. Page 5 installing the seal continued the piping should follow the guidelines established in the john crane manual leplan 5253a. John crane group, part of the smiths group of the united kingdom, is headquartered in chicago, illinois. John crane type 6 sealol type a pacseal type 16 john crane type 6a sealol type b pacseal type 68 john crane type 21 sealol type 43 pacseal type 21 john crane type 2. Pr 52 and pr 53a wet seal systems john crane seal support. Seal flush flow rate plan 52 and 53a piping system curves. Hseal provide an ultra high vacuum uhv seal that is particle free, impermeable to moisture and are interchangeable with elastomeric orings. It may also include the combination of a flow meter, flow or pressure control valves, and a flow indicator. Type 32 seals are outsidemounted id balanced seals with the seal faces in contact during operation. It is also recommended that a plan 11 bypass from discharge be used with the standard plan 5253. Multispring refers to 8 small springs used to properly b.
The type 1 is suitable for a wide range of service conditions. Fm for your nearest john crane facility, please contact. What deadended seal chamber with recirculation from seal chamber no flush. Search in john crane catalogs and technical brochures on directindustry and find the information you need in 1 click. Mechanical seal piping plans webinar session 3 siewert. Consult your local flowserve sales engineer to identify the right solution that satisfies your application requirements. Each plan shows all the standard and optional auxiliary components referenced in api standard 682 and recommended by flowserve. Type 48lp balanced pusher seal with plainface design for lower pressure applications. For your nearest john crane facility, please contact one of the locations above. Seal design eliminates the need for double seals with ancillary equipment in mixer applications. Pa 53b wet seal systems john crane seal support systems.
The aforementioned design features, necessary for specific process reliability, can in a watersealing. A flush plan is a strategic equipment arrangement that circulates fluid to or from the seal chamber in order to maintain proper lubrication, pressure, temperature, and solids management. Find john crane mechanical seal manual related suppliers, manufacturers, products and specifications on globalspec a trusted source of john. Mechanical seal piping plans flowserve corporation. The groundbreaking design was soon followed by the development and introduction of the john crane type 1, endface, elastomer bellows shaft seal. By continuing to browse this website, you are giving your consent to the use of cookies. Sealing systems for pumpssealing systems for pumps part i presented by. The john crane type 1 elastomer bellows seal is widely recognized as the industry workhorse with a proven track record of exceptional performance. John crane lemco seal support systems create the ideal seal environment to maximize seal performance, increase seal life, extend mean time between planned maintenance, and improve emissions control.
Chris fone semiretired seal engineer john crane inc. Most common plans and sealing systems plan 53b plan 53c plan 52 used where the pumped product is harmful hazardous and or buffer fluid may not contaminate the product. Purge out v e r t i c a l i n s t a l l a t i o n t o p debris well purge in debris well option for space required use dimensions indicated below for seal size 12 larger. Innovators from the start, john crane designed the worlds first automotive mechanical seal in 1949. External reservoir at pressure below seal chamber pressure providing buffer liquid forced circulation. You have remained in right site to start getting this info. Barrier fluid circulating loop all the barrier fluid stored in a plan 53a system flows through the mechanical seal. John crane is the largest and one of the oldest mechanical seal companies. A from mechanical seal b to vapor collection system c drain. Read pdf seal plan 52 john crane seal plan 52 john crane recognizing the way ways to acquire this books seal plan 52 john crane is additionally useful.
Bostecs revolutionary hseal are the most reliable, flexible and cost effective metal seals in existence. Sstype 32 seals can be repaired in the field to minimize. Reduce risk of freezingpolymerizing fluid in exposed plan 11 piping. Leakage from the primary seal is contained by the secondary seal in the plan 52 reservoir system. Used for applications where products have high pressure and are. Today, well identify 4 flush piping plans for single mechanical seals and how they work. Mechanical seal performance and related calculations by tom arnold. These reservoirbased seal support systems are designed for both api plan 52 and 53a applications. If the products featured will be used in a potentially dangerous andor hazardous process, your john crane representative should be consulted prior to their selection and use.
Use the dropdown menus below to select the documentation youre looking for and search results will display to the right. The goal is to create an ideal work environment for the seal in order to avoid wear and failures, thus prolonging its useful life. They are versatile designs using components common to other oring and wedge type seals. Plan 32 uses a flush stream brought in from an external source to the seal. With a lower k value, the safety against thermal overload will increase, but the mechanical seal may also lift off more easily.
Standard flush plans for mechanical seal plan 01 see figure 1. This plan is almost always used in conjunction with a close clearance throat bushing. The fundamentals 5 alpha alpha unavoidable phenomena like vibrations, misalignment and shaft runout and for this reason its called dynamic fig. These reservoirbased seal support systems are designed for both api plan 52 and 53a applications to support unpressurized and pressurized dual seals. John crane has a strong legacy that dates back to the creation of the crane packing company in 1917. Selecting a seal flush piping plan for your single. The type 58u and 58b are multispring din 24960en 12756 seals. Complies with international standard iso 3069, 5257 1975.
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