Widely used as the hydraulic source for the 720 kgf/cm² hydraulic jack group. The main body is of forged special steel, has long durability, with safety valve recessed. Pumps are classified according to effective oil volumes into 5 categories(0.3, 0.7,0.9, 1.3, 2.3 litres respectively). Oil volumes are the base for pump selection. Applicable to spring return system jacks.
To be used as the hydraulic source for the hydraulic return jack of 720 kgf/cm² series. Has a high and low automatic control-valve, the low pressure pump operates up to the loading of 30 kgf/cm². This means larger output volume and higher speed without loss of capacity. As the safety-valve is recessed inside, operation is assured. Applicable to hydraulic spring return jacks.