Koşul
Rising stem valves must signal their positions ("open" or "closed") to the controller. The implementation of the detection of intermediate positions by means of an analogue signal has been very complicated so far, e.g. by means of linear measurement.

Geri dönüşüm
efector valvis was designed for feedback of the valve positions on rising stem valves with a stroke of up to 80 mm. The sensor is fitted over the valve spindle and continuously measures the stroke. Previously selected switch points transmit the actual limits of travel to the controller. The sensor signals up to three valve positions to the controller: valve open, valve closed and any position in-between, e.g. seat lift. Furthermore, the resolution of the measuring distance of 0.2 mm allows condition-based maintenance of the valve seals. This way the maintenance intervals can be adapted to the actual wear, which in turn increases life and uptime.

Müşteriye sağladığı yararlar
With its precise valve feedback, efector valvis enables reliable fluid control. No switching signal is lost, even in case of a shrunk or swollen valve seal. Given that the valve plunger is entirely covered by the adapter, the risk of injury is minimised at this point. Furthermore, the analogue signal enables a precise valve control.