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Fisher® 30250 pages
3025 Actuator
nnnnD102789X012
nnnnProduct Bulletin
nnnn61.1:3025
nnnnMarch 2012
nnnnFisher® 3025 Sizes P462, P460-200, and P900
nnnnDiaphragm Actuator
nnnnFisher 3025 Size P460-200, P462 and P900 spring
nnnnopposed diaphragm actuators position the valve plug
nnnnin the valve body in response to varying controller or
nnnnvalve positioner pneumatic output signals applied to
nnnnthe actuator diaphragm. They can be specified as
nnnneither direct, e.g. air-to-close, or reverse acting e.g.
nnnnair-to-open (see figure 1). These actuators are
nnnndesigned to provide dependable on-off or throttling
nnnnoperation of automatic control valves.
nnnnThe size P462 is available for travels up to 120 mm,
nnnn4.75 inches with air-to-open and air-to-close action.
nnnnThe size P460-200 is available for travels up to 200
nnnnmm, 8 inches with air-to-open and air-to-close action.
nnnnThe size P900 is available for travels up to 120 mm,
nnnn4.75 inches with air-to-open and air-to-close action.
nnnnFeatures
nnnn■ Long Travel Capability—Suitable for valves with
nnnnvalve plug travels of up to 200 mm (8 inches).
nnnn■ Application Versatility—Yoke boss mountings, travel
nnnnstops, and manual operators are available for nearly
nnnnany control valve requiring longer valve plug travels.
nnnn■ Positive Connections—Split block stem connection
nnnnprovides for a solid transfer of motion while
nnnnallowing easy mounting, and it includes no linkages
nnnnto create lost motion and inaccurate valve
nnnnpositioning.
nnnnW908S-2 Fisher 3025 Actuator Air-to-Open Action
nnnn■ Reversible Construction—Actuator action can be
nnnneasily changed on site without need of additional
nnnnparts.
nnnn■ Long Service Life—Rugged steel construction
nnnnprovides stability and corrosion protection.
nnnnFISHER
nnnni 1
nnnnwww.Fisher.com
nnnnEMERSON
nnnnProcess Management
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