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Manual Fisher 657 Diaphragm Actuator Sizes 30
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Fisher 657 Diaphragm Actuator Sizes 30/30i through 70/70i ...
www.emerson.comFisher 657 actuator in sizes 30/30i through 70/70i and size 87. The 657‐4 actuator in sizes 70/70i and 87 is also covered. Refer to separate instruction manuals for information about the valve positioner and other accessories used with these actuators.
Product Bulletin Fisher 657-667 Diaphragm Actuators
www.emerson.com657 ACTUATOR 667 ACTUATOR W2174-2 W1916-3 Fisher 657 and 667 Actuators Mounted on easy-e Valves Cold Service Applications—Enhanced product specifications for all sizes of 657 and 667 diaphragm actuators allow performance to -50C (-58F). Use of a positioner is recommended to ensure responsiveness in applications operating below-40C (-40F).