A valve includes a valve body; a valve sealing element positioned inside the valve body; a stem positioned inside the stem bore of the valve body and engaged with the valve sealing element; and a cap fixed with respect to the stem, the cap comprising a mounting end and an actuating end; the mounting end defining a stem engagement cavity; the actuating end distal from the mounting end; the cap defining a first side surface, a second side surface, and a top surface; the cap defining a window in a position between the mounting end and the actuating end; the window defined in and extending from one of the first side surface, the second side surface, and the top surface; and the window exposing a surface of the stem but preventing passage of the stem through the window.