Product category:
Couplings, Seals, Gaskets
News Release from: John Crane EAA | Subject: 8600 Series PWI seal
Edited by the Processingtalk Editorial
Team on 19 January 2005
John Crane technology for sealing
solutions
New sealing technology suitable for applications in the oil and gas industries where aggressive fluids with high solids content such as produced waters are being handled
New John Crane technology raises the bar for high performance sealing solutions The introduction of a unique new pumping technology by John Crane EAA has opened the door to a new era in high performance sealing solutions that provide greatly increased life expectancy, ultra-high reliability and extremely low maintenance requirements
This article was originally published on Processingtalk on 29 Jul 2008 at 8.00am (UK)
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Centred around John Crane's new 8600 Series PWI seal, this new technology is suitable for different types of installation, but has particular applications in the oil and gas industries where aggressive fluids with high solids content such as produced waters are being handled.
Designed to provide a fit-and-forget solution which replaces the double seal arrangements traditionally used for this type of application, John Crane's new 8600 PWI technology uses proven, state-of-the-art gas seal principles to produce the first ever wet seal that offers the life expectancy more typical of a gas seal.
The 6800 PWI seal is guaranteed to run for at least two years, even in the lost difficult offshore duties, and offers an actual life expectancy of three years on produced water applications.
This new solution is highly cost-effective as one new PWI system is able to service several pumps, filtering sea water down to the required standard.
The advanced seal technology then raises the filtered water from atmospheric pressure to a pressure greater than pump suction and automatically adjusts to maintain a positive flow of barrier fluid across the faces, thus ensuring positive and highly effective sealing at all times by positively excluding product from the seal.
Because this advanced technology replaces the double seal and support systems currently used initial costs are reduced by some 30%.
Only a minimal amount of instrumentation is required, maintenance requirements are minimised, and because the system footprint area is also reduced, the new system is ideal for retrofitting or other applications where floorspace is limited.
Already proven in use on offshore platforms, the new technology can easily be installed by the end-user, supported by John Crane's experienced commissioning engineers.
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