Marketing InformationThe Grundfos CU 301 is a control and communication unit developed for the SQE submersible pumps for applications where a constant pressure is required. The CU 301 provide full control of the SQE pumps and enables the system to maintain a constant pressure within the maximum pump performance in spite of a varying water consumption. The pressure is registered by the pressure sensor and transmitted to the CU 301. The CU 301 adjusts the pump performance accordingly.