Electromotive coolant pump

An electrically motorized coolant pump, comprising:

• a suction side having two suction-side intake ducts and a pressure side having a pressure-side outflow duct for a coolant;
• a pump housing having a housing section and a pump chamber;
• a pump impeller being driven in said pump chamber;
• a control actuator disposed in said housing section between said suction side and said pressure side and hydraulically actuated in response to a demand for coolant;
• a control element coupled to said control actuator to open and close said intake ducts;
• said control actuator having at least one of a diaphragm disposed in said pump housing in a coolant-tight manner or a control piston, said membrane or control piston being connected or coupled to said control element;
• and
• said housing section having an actuator chamber connected to said pump chamber by a pressure opening for hydraulically actuating said control actuator.