The HS711A Hydraulic Pressure Comparison Pump is a portable, lightweight instrument made of advanced stainless steel and aluminum alloy. It can generate pressure up to 700 bar, and the screw pump design makes high-pressure operation easy and effortless. The F-adjust valve allows for precise adjustment of the pressure value. The detachable oil cup is easy to clean and maintain, and the transparent oil cover allows users to quickly check the working medium level. The HS711A has two standard pressure outputs for easy connection of gauges under test without the need for wrenches. It is widely used to calibrate pressure instruments in the field and laboratory.