The High Pressure Adjustable Metering Valve maintains a back pressure which is directly proportional to the inlet flow rate and solvent viscosity. The valve has an adjustment range from 10 PSI to 5,000 PSI at 1.00 mL/min. with water. The dead volume is less than 4 µL with flow paths designed to minimize dispersion. When ordering, please feel free to contact us if you wish to utilize significantly different solvents or inlet flows with this valve.