Thomas piston pumps utilize proprietary WOB-L® pump technology from Gardner Denver. WOB-L® piston pumps can provide higher pressure and flow capabilities than many other pump technologies, in a much smaller package. They cover a wide range of applications due to the breadth of product platforms and performance capability.
Flow rates range from 5.4 l/min (0.19 cfm) to 212.4 l/min (7.5 cfm). The pneumatic performance covers pressures up to 12 bar (175 psi) and vacuum levels up to -990 mbar (29.2 in.Hg). Various motor options address lifetime requirements.
Benefits of Thomas WOB-L® Piston Pumps and Compressors
Thomas oil-less piston vacuum pump and compressors provide a range of remarkable benefits, such as:
low vibration and balanced flow for smooth operation
low power consumption platform for reduced energy use
higher performance capabilities in a much smaller package, enabling use even when only a limited amount of space is available.
can generate the highest pressure among all pump technologies
Build with corrosion-resistant materials making them suitable for medical, industrial, food & beverage markets
Maintenance and service free operations through continuous work cycles
Characteristics of Thomas WOB-L® Piston Pumps and Compressors
We have over thirty standard catalog series and a full range of possible pump configurations to offer. Thomas is well-known for offering an outstanding customization range that includes options for materials, head porting, foot mounting, electrical hook-up, cooling airflow directions, and multiple strokes, and bore sizes.
Free flow up to 90 l/min 212 l/min (7.5 cfm)
Maximum pressure up to 12.1 bar (175 psi)
Maximum vacuum up to 1 mbar abs. (29.2 in Hg)
Optional restart against pressure or vacuum
Single or twin piston
Single or two stage
AC, DC or brushless DC
Choose Thomas Wobble Piston Compressors and Vacuum Pumps for a Wide Range of Gas Applications
Thomas WOB-L® piston compressors and vacuum pumps are the best choice for medical, food&beverage, automotive or environmental applications that require long life and high performance. High-pressure wobble piston pumps and compressors are often selected by the medical market for their high quality and reliability. Life-saving equipment such as oxygen concentrators, ventilators, and other breathing support devices rely on our piston pumps for their critical functions.
Thomas has three manufacturing sites, located in the USA, Germany, and China to offer positive displacement pumps and compressor solutions for a variety of markets. With our capabilities of on-site regulatory testing, injection molding, and 3D printing we help to speed up time to market for our customers.
Application expertise enables our engineers to tailor pump performance even to the most complex and challenging application.
How WOB-L® Piston Pump and Compressors Work?
The WOB-L® piston pumps are dry running reciprocating pumps. They convert the rotary motor’s energy into the piston's linear motion within the pump cylinder. The piston rod is mounted to an eccentric bearing assembly attached to the motor shaft.
A rod/eccentric assembly that rotates about the shaft causes the piston end to tip or wobble, providing the origins for the trademark name. To compensate for the ‘wobbling’ and increase the pump's efficiency, the piston is sealed to the pump cylinder. It’s sealed by a flanged disk cup that forms both axial and radial seal along with a mechanical guide for the piston.
THOMAS is a leading manufacturer of systems, compressors, vacuum, and liquid pumps for Original Equipment Manufacturers (OEMs) in the medical, laboratory, environmental and industrial sector. With its experienced Engineering, Technical, and Operations staff and capabilities, Thomas designs and manufactures customized pressure and vacuum solutions that meet the precise needs of its customers. Backed by over 60 years of engineering excellence and innovation, and a global manufacturing network, Thomas stands out as the reliable choice for OEMs worldwide.