Fisher 480 series linear piston pneumatic actuator
An actuator is a mechanical device used to control valves, dampers, etc. Emerson Fisher pneumatic actuators, including Fisher rack and pinion actuators, Fisher piston actuators, Fisher diaphragm actuators, and Fisher self operated actuators Pneumatic actuators can provide high stem power output under harsh working conditions. These actuators are typically operated by air pressure, but some can be operated by process liquids themselves.

Piston Actuator
Emerson Fisher linear piston actuator is a powerful dual acting actuator Specifically including: Fischer 1061, Fischer 1066 and 1066SR, Fischer 480, Fischer 585C
Fisher ® The 480 series actuator is a frameless piston actuator suitable for throttling and switching applications with ball valves, butterfly valves, louvers, dampers, and variable resistors. This type of actuator requires pneumatic pressure to be loaded from a double acting locator (3570 series) or from a switch loading and unloading device.
Multi functional actuator - The actuator can be equipped with or without a locator and shock absorber, and offers various sizes, travel speeds, thrust, and travel to meet most control requirements.
Compact design - the frameless structure is tightly connected to the control device to achieve flat components; This type of actuator can be installed through a bracket, or for some versions, it can be directly installed onto the valve cover flange.
Wide range of gas source pressure functions - the cylinder (and 3570 positioner (if used)) can use gas source pressures as low as 2.4 bar (35 psi) or as high as 10.3 bar (150 psi).
Long stroke - The maximum rated stroke of the actuator is up to 206 mm (8.125 inches).
Multi functional locator - The locator/actuator can be operated reversibly on site without the need for other components. The sensitivity, travel range, and starting point of the locator have been set at the factory and only need to be reset when there are changes in working conditions or when the locator is operated in reverse.

　　 Fisher Company Introduction
Fischer Control Equipment International Limited was founded in 1880. At that time, in Marshalltown, Iowa, USA, our founder William Fisher invented the first pump regulator and planted Fisher's seeds in the small town. Since then, Fisher has achieved tremendous development through years of hard work and has become a recognized brand.
Emerson purchased Fischer in 1992 and merged with another world leader in the process instrumentation field, Rosemount, to establish Fischer Rosemount to better meet our customers' requirements for a complete range of applications and process control. In April 2001, Fischer Rosemount was renamed Emerson Process Management.
Fischer's business scope
The industries served include: petroleum and gas, paper and pulp, oil refining, food and beverage, chemical and petrochemical, pharmaceuticals, electricity, metals and smelting, semiconductors; The product and service scope includes: control valves and actuators, digital valve controllers, digital level controllers, AMS ValveLink software, field installed instruments, quick replacement parts services, regulators, etc.