HYDROPNEUMATIC pump type ""AL-HPA-DE-25-VS-RL-PM-S07AL" by 22.5 cc / cycle with double acting, operated pneumatically. Pressure ratio of 1:25 - Max pressure 200 bar - Maximum pressure 8 bar air - 7-liter tank aluminum-plastic with oil level. - Pressure relief valve set at 100 bar (adjustable from 25 to 350 bar) - Hand pump GH- HPM20 - Tap 0-1 unstable NC lever to activate the pump - tap root - For DOUBLE effect cylinders.