The microprocessor-driven, digital-timer DX-300 series, dispenses precise fluid profiles in an accurate, consistent, and repeatable manner. The series is comprised of the DX-300 and the DX-315. The DX-300, with an operating pressure of 0-100 psi, is designed for general fluid dispensing and to control a variety of dispensing valves. The DX-315, with an operating pressure of 0-15 psi, is designed for low viscosity fluid dispensing. Aside from having different air pressure settings and valve controlling capability, DX-300 and DX-315 are identical in form, fit and function.