Abstract

A limit switch assembly for a rising-stem valve includes an operating lever actuator element mounted to an outer end of an actuator arm. An electrical switch mounted adjacent the outer end has an operating lever. When the actuator arm is in an outward position, the operating lever actuator element retains the operating lever in a first position wherein the electrical switch is in a first state, and when the actuator arm is in an inward position the operating lever is in a second position wherein the electrical switch is in a second state. An adjustment nut is mounted to the outer end adjacent the operating lever actuator element, and the operating lever actuator element and the adjustment nut are configured to be adjusted along a longitude of the actuator arm to change a distance the operating lever actuator element must travel to move the operating lever into the first position.