An inflatable penile prosthesis may include a fluid reservoir configured to hold fluid, an inflatable member, and a pump assembly configured to transfer fluid between the fluid reservoir and the inflatable member. The pump assembly may include a pump bulb, a valve block, a plurality of valves disposed within the valve block, a first fluid port in fluid communication with the fluid reservoir, and a second fluid port in fluid communication with the inflatable member. The plurality of valves includes a control valve configured to move between an inflation position and a deflation position to control the flow of fluid within the valve block and the transfer of fluid between the fluid reservoir and the inflatable member.