ACTUATOR APPARATUS WITH INTERNAL TUBING AND ANTI-ROTATION MECHANISM

摘要

Fluid valve actuator apparatus having internal tubing and anti-rotation features are disclosed. An example actuator apparatus includes an actuator casing and a diaphragm plate disposed within the actuator casing. The diaphragm plate defines a first pressure chamber and a second pressure chamber opposite the first pressure chamber. A yoke couples the actuator casing to a fluid valve. The yoke includes a first internal fluid passageway in fluid communication with atmosphere and a second internal fluid passageway to receive a control fluid from a controller. A tube fluidly couples the first or second internal fluid passageway to the first pressure chamber via an opening in the diaphragm plate. The tube also prevents the diaphragm plate from rotating relative to the actuator casing.

主权项

1. An apparatus comprising:
an actuator casing; a diaphragm plate disposed within the actuator casing and defining a first pressure chamber and a second pressure chamber opposite the first pressure chamber; a yoke to couple the actuator casing to a fluid valve, the yoke including a first internal fluid passageway in fluid communication with atmosphere and a second internal fluid passageway to receive a control fluid from a controller; and a tube fluidly coupling the first or second internal fluid passageway to the first pressure chamber via an opening in the diaphragm plate, the tube to prevent the diaphragm plate from rotating relative to the actuator casing.