Product Name: Fisher 685 Piston Actuator
Brand: Fisher
Product Code: 685
Tags: Fisher
Fisher 685 Piston
685 Piston
Fisher Piston Actuator
Piston Actuator
Fisher 685 Piston Actuator
Fisher Piston Actuator
Fisher 685 Piston
685 Actuator
Fisher 685 Piston Actuator
Fisher Actuator
Fisher Actuator
Fisher Piston
Fisher 685 Actuator
685 Actuator
Actuator
Piston Actuator
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Fisher 685 series piston actuators provide medium to high thrust output for a variety of medium to very large Fisher sliding-stem valves, including the easy-e™, HP, EH, FB, and 461 valves.The double-acting design of the actuator results in stiff, precise positioning. Spring-return constructions are also available and offer a fail open or closed mode of operation when paired with a valve.FeaturesMaximum thrusts of up to 354 kN (79,000 lbf) can be produced, depending on construction.Depending on size, strokes of up to 610 mm (24 in) are available.The double-acting construction allows for stiff, precise positioning.A side-mounted handwheel is available for all sizes except the size 28, which uses a hydraulic hand pump for manual override control.Internal bias spring constructions are available for applications requiring a mechanical fail mode.Low friction piston seals and cylinder coatings reduce sliding friction and wear.