The range of hydropneumatic units represents a new work concept in all those fields requiring an application of force. The units are the result of technical development where two applied techniques, namely the speed of pneumatic actionthe high force developed by hydraulic systems are combined to give the units the required versatility in operation so as to achieve high levels of efficiency in the various fields of application. Hydropneumatic units are designed for high cycling operation under conditions of maximum safetyminimum noise, but in no way are the essential features of a production machine neglected, namely : - SPEED - SILENT OPERATION - ECONOMIC RUNNING - VERSATILITY IN APPLICATION - MAXIMUM SAFETY