Rolling Diaphragm Pump provides pulsation-free air flow.

Press Release Summary:

Gas-tight, oil-less Model 1101 utilizes rolling diaphragm design, which combines rotary and diaphragm pump features. Measuring 2.75 in. long x 1 in. dia, miniature compressor offers max flow rate of 3.2 lpm and max pressure of 7.3 psi. Offered in 5.5 and 12 Vdc versions, pump has motor enclosure and built-in resonator that limit noise level to 45 dBA. Unit incorporates EPDM diaphragms and valves and suits medical, laboratory, and industrial applications.

Original Press Release:

Rolling Diaphragm Pump From Thomas Provides Pulsation-Free Air Flow

The new Model 1101 miniature compressor from Thomas utilizes an innovative
"rolling diaphragm" design that combines the best features of rotary and diaphragm pumps. Rather than moving up and down, the Model 1101 pump's diaphragm rolls in the cylinder. This increases airflow relative to size and provides an extremely precise flow with limited pulsation, key characteristics of rotary pumps. And, like conventional diaphragm pumps, the Model 1101 is gas-tight and delivers high-end pressure.

Because of its performance, durability, efficiency, oil-less design and compact size, the Model 1101 is suitable for medical, laboratory and industrial applications. A special motor enclosure and built-in resonator limit the pump's noise level to 45 dBA. The pump measures just 2.75 in. (70 mm) long, 1 in. (27 mm) in diameter and weighs 2.6 oz. (75 g).

Maximum flow is rated at 3.2 lpm. The maximum pressure rating is 500 mbar (7.3 psi). The Model 1101 pump is available in both 5.5 and 12 VDC versions and incorporates long-life EPDM (ethylene-propylene rubber) diaphragms and valves.

Thomas Products Division, based 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 and pharmaceutical equipment, automobiles, business machines, printing presses, packaging machines, environmental systems and vending products, among others. Gardner Denver, Thomas's parent company, 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.

Please send inquiries to:
Marketing Department
Thomas Products Division
1419 Illinois Avenue
Sheboygan, WI 53082-0029
Phone: (920) 457-4891
Fax: (920) 451-4276

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