Fisher r 6560 pages
656 Actuator
nnnnD100086X012
nnnnProduct Bulletin
nnnn61.1:656
nnnnFebruary 2013
nnnnFisher® 656 Diaphragm
nnnnThe Fisher 656 actuator is a bracket-mounted,
nnnndirect-acting, diaphragm actuator for either throttling
nnnnor on-off service. Principal applications include
nnnnoperation of butterfly valves and built-in turbine
nnnnvalves, louvers, dampers, and other similar equipment.
nnnnFeatures
nnnn■ Mounting Versatility—Four tapped holes in the
nnnnactuator base permit either bracket or plate
nnnnmounting.
nnnn■ Long Actuator Travel—Deep casings provide up to
nnnn105 mm (4.125 inches) of maximum travel with a
nnnnsize 60 actuator.
nnnn■ Application Versatility—Wide spring selection is
nnnnavailable for nearly any control application. Spring
nnnnselection procedures are quick and accurate.
nnnn■ Severe Service Capability—Rugged yoke and casings
nnnnprovide stability and corrosion resistant protection.
nnnnInstallation
nnnnThe actuator may be installed in any position.
nnnnDimensions are shown in figure 1.
nnnnActuator
nnnnTYPICAL CONSTRUCTION
nnnnFisher 656 Actuator
nnnnFISHER
nnnnwww.Fisher.com
nnnnEMERSON
nnnnProcess Management
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