20150147202 | PUMP HAVING INTERCHANGEABLE HEADS - A pump comprising a housing having a head carrying area, a motor disposed within the housing, a rotor rotated by the motor; and a pump head assembly mounted to the head mount of the housing, the pump head assembly being one of a piston head assembly or a diaphragm head assembly. The head carrying area is configured such that the piston head assembly and the diaphragm head assembly may be interchangeably mountable thereon. The head carrying area comprises a cylinder seat surrounding an aperture and a radially outward of the aperture. The sidewall may also have a step. The cylinder seat may be sized to receive a cylinder of the piston head assembly and the annular step of the annular sidewall may be configured to receive a diaphragm support ring of the diaphragm head assembly. | 05-28-2015 |