Verdergear gear pumps are perfectly suitable for demanding applications in fluid transfer for dangerous liquids or expensive chemicals. They produce a very constant pulsation free flow without leackage. The magnetically driven gear pumps have no shaft seals and are 100% leakfree. The pumps are perfect for dosing and metering applications and ensure a repeatable and accurate flow. This execution is equipped with a 230V 1 phase variable speed drive. Motor includes a frequency controller and a forced vent. Different terminal box covers will be available with following operating elements: Power switch, right/left-button, start/stop-button, manual/external-button and a setpoint potentiometer for manual setting of speed between 0 and 100%. For External control analog signals 0-10V, 4-20 mA and a digital access RS485 are also available. RPM range of 50 – 5000 could smoothly realised at constant torque.