Emerson Fisher 655 and 655R User Manual

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Fisherr 655 and 655R Actuators
for Self-Operated Control
Fisher 655 and 655R diaphragm actuators, in
combination with Fisher valves, provide control for a
wide variety of pressure regulation applications. The
655 is used for pressure reduction service on
push-down-to-close valves, and the 655R is primarily
for pressure relief use on push-down-to-open valves.
These actuators may be either self-operated or
Versatility–Typical industrial service includes
pressure control of water, steam, oil, gas, and other
fluids. Actuators can be operated by pneumatic
switches, solenoid valves, pilot valves, or remote
panel loaders for shutoff service.
Large Valve Body Selection–easy-e valves up
with wide choice of end connections, flow
directions, flow characteristics, valve plug designs,
and seating constructions can be specified.
Broad Ac tuator Spring Selection–Spring of the
proper rate is available for nearly any control valve
application. Spring selection procedure is quick and
Severe Service Capability–Rugged yoke and casings
help provide stability and corrosion protection.
Fast Acting – Direct-operated configuration
provides faster speed of response.
Fisher 655R on Reverse-acting easy-et Valve Body
Fisher 655-ED Construction Details
655 Actuator
Product Bulletin
December 2012