Upstream Pumping

We answer operators’ toughest challenges, improving seal and pump reliability, preventing unplanned downtime and reducing operating costs across a broad range of process industries, including:

• Pulp and Paper
• Power Generation
• Minerals and Mining
• Chemical
• Oil and Gas
• Water and Wastewater

John Crane’s unique, engineered, non-contacting Upstream Pumping face technology borrows from gas seal designs to deliver a breakthrough in liquid sealing technology. This allows operators to:

• Improve mechanical seal life
• Increase mean time between repair (MTBR)
• Reduce seal leakage to atmosphere when compared to a pressurized dual seal
• Allow a clean inboard face fluid interface, even with dirty product
• Deliver a simple support system ensuring face lubrication without the cost of a pressurized barrier system
• Prevent solid build-up with slurries, scaling fluids or solids in suspension
• Eliminate seal face flush to dissipate seal heat, reducing water usage
• Address low water supply pressure challenges
• Reduce power consumption and heat generation due to non-contacting technology

Mechanical seals using Upstream Pumping seal face technology have support system requirements unique from traditional dual mechanical seals. A standardized support system is available to supply our standard Upstream Pumping seals. Using one of these systems eliminates the need to design a custom system, saving costs, making operation simple and minimizing space requirements. For more information on the GS USP–R and GS USP–D click the corresponding link.