15S643

15S643 is a Lin-E-Aire® valve actuator used for automatic operation of the control valve. The opening, closing or throttling of the valve plug in the valve body is accomplished by varying the air pressure to the diaphragm in the actuator. This pressure is transmitted from a control device, which may be controlling pressure, liquid level, temperature or flow. The types of actuators are used for process control depends upon the valve action desired in case of air supply failure.

• Air-to-lower senior actuator
• 18 number of bolts
• 80 sq. in effective area
• Cast iron, baked enamel finish frame
• Steel, baked enamel diaphragm case
• Buna-N-rubber, Nylon reinforced diaphragm
• Plated spring steel range spring and plated steel range spring seat
• Plated cold rolled steel adjusting screw, plated steel push rod
• 243 termination number, 50psig max air supply pressure, 1-1/2" (38.1mm) max stroke
• 1/4˝ female NPT air connection