Rocking piston vacuum pumps    linear diaphragm    linear piston    diaphragm pumps    micro / mini pumps    laboratory systems    sampling pumps     Europe, Middle East and Africa     North and South America     Asia Pacific Gast Manufacturing, Inc - P.O. Box 97, Benton Harbor, MI 49023-0097, USA Tel. +1 269.926.6171, Fax +1 269.925.8288 products: Rocking Piston pumps - This design combines the light weight and compact size of the diaphragm unit with the vacuum capabilities of reciprocating piston units. Vacuums to 27.5 in. Hg are available with a single stage; two-stage units can provide vacuums to 29 in. Hg. Air flows, however, are limited, with the largest model available today (a twincylinder model) offering only 2.7 cfm. 55R, 71R, 72R, 74R and 75R Rocking Piston Oilless Pumps ROA Rocking Piston Vacuum Pumps and Compressors ROA Laboratory Rocking Piston Vacuum Pumps and Compressors SAA and SOA Rocking Piston Vacuum Pumps and Compressors     Keywords     www.vacuum-guide.com