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Fisher 685 Series piston actuators

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Taneli Luhanko
Inside Sales Engineer
Phone. 0207 416 202
Mob. 040 757 4208

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.

Fisher

Tekniset tiedot
Ominaisuudet
Liittyvät tuotteet

Actuation	Double-acting, Spring-return, Linear
Certifications	PED, CUTR, ATEX, SIL capable
Control Type	Throttling, Positioning
Operating Temperature	Standard Temperature
Power Source	Pneumatic
Process Control	On/Off, Throttling, Positioning
Valve Type	Angle Valve, Globe Valve

Maximum 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

Brands

Fisher 685 Series piston actuators

Questions about the product?

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