Hydropneumatic pump type "AL-HPA-DE-25-VS-RL-PM-03AL-MD-LV-VR" 14 cc/rev double acting, pneumatically driven - Pressure ratio 1:35 - Maximum pressure 250 bar - Maximum air pressure 7 bar - 3 liter aluminum-plastic tank with oil level - Relief valve set to 100 bar (adjustable from 25 to 350 bar) - Emergency external hand pump AL-HPM20 - manual acting - 0-1 unstable knob NC ( normally closed) lever to activate the pump - Main knob - For DOUBLE EFFECT cylinders - Vertical Mounting "VR" or ORIZONTAL mounting "OR"