During equipment inspection and maintenance, it is more difficult to separate stubborn flanges, especially when there are ring grooves or external forces on the flange. The use of hammers, crowbars and other tools will damage the flange components, and there are safety hazards. 1. Manual hydraulic operation. 2. The step spacer can increase the opening distance of the flange separator to 81mm. 3. Safe and stable integral hydraulic system.