YX-2006B portable manual hydraulic pressure calibrator is currently used in our country’s metrology verification or calibration industry, and products such as piston pressure gauges, desktop pressure sources, and electric pressure calibration benches are generally used. These products are generally large and are not suitable for on-site calibration carry, while foreign portable products use hand clamp type. The pressure is laborious and the operation is complicated. Combining the above reasons, our company has recently developed a pressure source that is easy to carry, simple in structure and labor-saving in operation.