A pump for an implantable penile prosthetic includes a reservoir tubing port, an inflatable implant tubing port, a pump bulb connected to a body of the pump, a rotary valve. The pump bulb is operable to move a liquid through the reservoir tubing port and into the pump bulb along a first flow path formed in the body of the pump, and out of the pump bulb and through the inflatable implant tubing port through a second flow path formed in the body of the pump. The rotary valve communicates with both of the first flow path and the second flow path. The rotary valve is constrained to rotate in only one of a clockwise direction and a counter clockwise direction.
