The objectives ofthis research are: To model the dynamic response ofa solenoid valve to explore the parameters that have some effect on the valve perfonnance, To modifY, based on the dynamic model, the part(s) of the valve that have some influence on the valve performance, To investigate about the effect ofthe operational conditions, like voltage and pressure, then to run a test to observe the results, and To compare the performance ofthe original valve with the modified valve in terms of response time.