CHALLENGE
The steam pressure control valve to the digester is subjected to high vibration and the cast iron actuator yoke legs were fracturing causing unplanned downtime.
SOLUTION
L-Series actuator with a stainless steel yoke was offered on a 6” globe control valve. This reduced the total mass and moment arm acting on the actuator eliminating failure.
RESULTS
Customer replaces actuators on all 28 digesters with L-Series to improve pulp mill reliability.