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Emerson Process Management, Valve Automation - Quarter-Turn/Linear Double-Acting or Spring-Return
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Hydraulic double-acting and spring-return helical quarter-turn actuator. Compact and concentric, the proven design provides space savings and reliability. Using the multiple helical spline engagement with reciprocal splines on the piston, the high torque output is constant throughout the 90 degree rotations. Converts hydraulic energy into rotation, with torque output proportional to the supply pressure.
The BHH and BHHF can be operated in the most severe conditions, from high vibrations to severe environment locations. Easily adapted to all types of quarter-turn valves, dampers or louvers. The mounting positions are numerous, with the models ready or direct mount modular control functions.
Hydraulic linear double-acting and springreturn actuator, with optional hand pump. The BL and BLF convert hydraulic energy into linear motion, with thrust proportional to the supply pressure. With no external moving parts during operation, it includes in its design pressure maintaining functions against temperature variations. Designed to adapt easily to most globe valves, it provides direct visual position indication and integrated crossover valve. The design includes pressure maintaining functions which compensate for temperature fluctuations.
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