... 22 Ton, various Boosting Cylinders; Standard Models: 4, 9, 14 and 22 Ton, output force; Optional Models: 30, 50, 60, 75 and ... 100 Ton, output force; Rated Pressure: 90p. S. I. Minimum Operating Pressure: 50p.S. ... I. Maximum Operating Pressure: 120p.S. I. Operating Medium: Compressed air, dry, filtered (40 micron) and lubricated. Boosting cylinder