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Article: Getting Gear Pumps Up to Speed.
- Article from:
- Chemical Engineering
- Article date:
- September 1, 2001
- Author:
CopyrightCOPYRIGHT 2001 Access Intelligence, LLC. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Compared with diaphragm and piston pumps, gear pumps cover a larger range of flows, but may have difficulties with low-viscosity fluids
Gear pumps are frequently used to meter flow, or to pump viscous or thin fluids. In metering applications, gear pumps typically compete with diaphragm or piston pumps. All three designs make good metering pumps because they produce a consistent volumetric flowrate under given conditions. Each type can deliver repeatable flows from -0.5 to +2% of nominal flow, depending on the drive system.
However, each type of pump has its own strengths and weaknesses. For example, diaphragm and piston pumps are capable of high pressures ...
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