Features
Requires no external moving parts during operation
Includes pressure main-taining function against temperature variations
Provides direct visual position indication and integrated crossover valve for globe valves
Easy installation on intermediate flange of globe valve
High water ingress protection IP68
Viscosity of hydraulic oil 30 to 4800 Nm /265 to 43000 lbs/inViscosity of hydraulic oil 15 to 200 cSt
BETTIS 
Bettis BLF-BLFR Series Linear Hydraulic Valve Actuator
Hydraulic helical valve Actuator can be operated in the most
severe conditions while providing a compact valve automation solution.
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