DISPOSITIVO DE ACIONAMENTO PARA A HASTE DE UMA VALVULA

摘要

A drive mechanism for a spindle of a valve includes an electromotor with subsequently connected gear transmission which are arranged laterally offset to the axis as defined by the spindle to allow the latter to move in axial direction unimpeded from electromotor and gear transmission and to be adjustable to arbitrary strokes. The spindle is actuated by a nut which cooperates with the gear transmission and is locked in its quiescent stage to prevent a rotation thereof. The gear transmission is also manually actuatable via a crank handle whose grip portion in addition serves also a viewing glass when attaching the crank handle in elongation of the spindle at an appropriate location of the housing.