Abstract: A precision metering and dispensing pump of the peristaltic type is disclosed. The pump includes a housing in which an elongated, compressible fluid extruding tube is disposed. The tube has an outlet that is adapted to be connected to the source of fluid that is to be pumped. Spaced serially along the tube and in opposition thereto are an inlet plunger, an extruder plunger and an outlet plunger all of which constitute valves and which are arranged to be displaced in such a manner as to apply compressive forces to the tube. A linear actuator is mounted on the housing and is coupled to a primary, two-part cam that is arranged to linearly displace the inlet and the outlet plungers at preselected times. Displacement of the primary cam causes the displacement of a secondary cam to the movement of which is responsive the extruder plunger. The primary cam acts on the outlet plunger which, at the beginning of the cycle is extended so as to close the tube.