OPG1-30000 provides an alternative for generating and adjusting high liquid pressures in calibration and test systems. This compact and easy to use system provides just the right balance between the simplicity and reliability of manual operation and the convenience of automated features. OPG1 is a compact and easy to use system for generating and adjusting pressures between zero and 200 MPa (30,000 psi) with on-demand high pressure supply and pushbutton, precision pressure control. Time consuming and tiresome manual pumping and/or screw press operation are completely eliminated. OPG1 is the ideal solution in a variety of applications where high pressure generation and precision control are required including piston gauge and transfer standard based calibration and test systems.