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eXtending the performance of non-contacting pump seals

eXtending the performance of non-contacting pump seals
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eXtending the performance of non-contacting pump seals - 1

extending the performance of non-contacting pump seals bringing technology to life

eXtending the performance of non-contacting pump seals - 2

2800X eXtended performance for non-contacting pump seals eXtended performance - lower, higher, and safer The John Crane type 2800X is a non-contacting dual seal for non-turbo, large-bore rotating equipment applications, and complements the John Crane type 2800E small-bore range. 2800X seals feature new-patented technology, which provides the basis for a series of enhanced end user benefits. • Reduced operational costs. Compliant face technology keeps the gap between the seal faces to a minimum, whilst maintaining long life, noncontacting performance. The result is lower gas barrier usage,...

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eXtending the performance of non-contacting pump seals - 3

2800X eXtended performance Where and when to use 2800X seals 2800X seals excel in many performance-critical applications, including • Reactive or temperature-sensitive media, where local process ‘hot spots’ can cause unwanted chemical reactions, such as reactive monomers in polymerisation processes • Air (oxygen) - sensitive processes especially where unwanted oxidation reactions could occur • Cold applications, such as ammonia processing • Processing of extremely pure materials, where no contamination is permissible • Where process liquids are near the gas/liquid phase equilibrium, because...

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eXtending the performance of non-contacting pump seals - 4

2800X eXtended performance How 2800X works Spiral grooves are machined into the mating ring faces of each seal head. A suitable pressurised inert gas is injected between the seals. As the pump shaft rotates barrier gas flows in to the spiral grooves. The gas is compressed as it does so, then expands on leaving the spiral grooves. This expansion produces a nett opening force thus separating the faces. As a result of this process, long seal life with low running and repair costs is achieved, the seal faces are non-contacting and so do not wear. In addition, installation is much simpler as no...

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eXtending the performance of non-contacting pump seals - 5

2800X eXtended performance eXtended performance for existing applications eXtended performance for special applications The 2800X is designed to retrofit existing installations of 2800, 2800ER, and 2800HP seals, so customers can easily upgrade to 2800X performance as part of their normal service and maintenance programmes. The patented technology and tolerant design of type 2800X seals make them ideally suited for applications requiring specially engineered seals with performance even beyond that of the standard range. eXtended performance for API The American Petroleum Institute seal...

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2800X eXtended performance Type 2800 Seals Serve this Partial List of Representative Fluids: Acetone Acetic anhydride Acrylonitrile Alkyl resins Amines Ammonia Anhydrous cyclohexane Benzene Bisphenol acetate Butadiene Chlorine gas Dichlorobutadiene Dichloroethane Ethanol Ethyl chloride Ethyl hexanol bottoms Formaldehyde Gasoline Glacial acrylic acid Hydrocarbon Isobutyl alcohol Kerosene LPG Methanol Methylene chloride Molten chemical tar Nitric acid Organic acid Phenol Plastic pigment Propane/butane Propane with caustic Recycle gas Santotherm 59 Slurry water Sodium carbonate Sodium...

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