Electric, centrifugal transfer pumps for diesel and fuel oil, suitable for the direct mounting on drums or tanks. These non-selfpriming pumps, protection category IP 44, include motors with thermal circuit breaker, integrated siphon protection device, ON-/OFF switch and an integrated connection thread M 64 x 4 and BSP 2”. On the shaft a small manual pump is mounted which serves for the fi lling of the suction hose as well as for a manual pumping if there is no electric power supply available