STEM GUIDE APPARATUS FOR USE WITH FLUID VALVE ACTUATORS

摘要

Actuator stem guide apparatus for use with fluid valve actuators are described. An example actuator stem guide apparatus includes a base having an opening ( 310 ) to allow an actuator stem ( 230 ) of the fluid valve actuator to tilt or lean within the base to enable a lever of the fluid valve actuator to rotate and a guide receiving area adjacent the opening of the base. A guide ( 304 ) is coupled to the guide receiving area and the guide has a bearing surface ( 316 ) to slidably engage the actuator stem to limit lateral movement of a diaphragm assembly relative to a longitudinal axis of the opening to prevent the diaphragm assembly from engaging an inner surface of an actuator housing as the actuator stem moves between a first position and a second position.