The electrical fine control valve makes it possible to adjust volume flows precisely via an input signal (4-20 mA) and to approach an exact spindle position. The valve can also be controlled by a 24V continuous voltage. Position feedback is implemented by a 4-20 mA output signal. With an additional adapter, the valve can also be connected via an RS-232 interface to a computer. The valves are available in 1/4" (10-200 l/h of water) and 1/2" (50-500 l/h of water).