Exceptional Engineered Solutions

Multi-step Linear Actuator

Challenge

Operate 6˝, 8˝, 16˝ stop-check globe valves in the first full scale industrial application of the new patented Slurry Technology for almost total conversion of heaviest refinery bottoms to middle and light distillates.

Solution

PLAS-RSC linear two stage pneumatic actuators + Controls

Custom designed solution to face new technology requirement: two piston chambers allow sequential three-step opening stroke.

• Fail close by single spring stroke
• Spring thrust specifically calculated to allow stop check function while avoiding chattering risk
• AST up to 116.000 N
• SET up to 239.000 N

Industry

Oil & Gas - Refinery