The Thomas Model 2250 pressure/vacuum pump provides unprecedented levels of mobility and efficiency, combined with long life, in applications such as medical, analytical and air sampling equipment and office machines.

The quiet, low-vibration WOB-L® Piston design Model 2250 utilizes magnesium components that limit the pump’s weight to a mere 2.5 lbs. (1.1 kg). A highly efficient 24V brushless DC motor offers low power consumption and long life. The motor’s speed may be varied speed from 1,000 to 3,000 RPM, meaning the air flow can be steplessly controlled according to application need. In addition, an optional closed loop controller allows motor speed to be maintained at a pre-set, constant RPM regardless of load or voltage fluctuations. The oil-less piston and cylinder design ensures clean, uncontaminated air flow up to 0.6 cfm (17.0 lpm). Maximum pressure is rated at 17 psi (1.17 bar) and maximum vacuum at 22 in. hg (-745 mbar).

Thomas Division,, a Gardner Denver Company headquartered in Sheboygan, WI, is a world leader in the design and manufacture of precision engineered compressors and vacuum pumps. Thomas products are found in medical, environmental systems, pharmaceutical equipment, automobiles, business machines, printing presses, packaging machines and vending products, among others. Gardner Denver, Inc. is a leading worldwide manufacturer of reciprocating, rotary and vane compressors, liquid ring pumps and blowers for various industrial and transportation applications, pumps used in the petroleum and industrial markets, and other fluid transfer equipment serving chemical, petroleum and food industries. Gardner Denver (NYSE: GDI) is headquartered in Quincy, IL. For more information, visit the company’s Web site,