Fisher 667. Emerson Fisher 657 And 667 Installation Instructions The 667‐4 actuator in sizes 70/70i and 87 is also covered Zero setting of the actuator is determined by the compression of the actuator spring
Emerson Fisher 657 And 667 Installation Instructions from usermanual.wiki
The actuators position the valve plug in response to the controller or valve positioner's pneumatic output signal sent to the actuator diaphragm casing. Fisher 657 and 667 actuators are designed to provide dependable on/off or throttling operation of control valves
Emerson Fisher 657 And 667 Installation Instructions
These spring-opposed diaphragm actuators position the valve plug in the valve in response to varying controller or valve positioner pneumatic output signals Fisher 657 and 667 actuators are designed to provide dependable on/off or throttling operation of control valves The actuators position the valve plug in response to the controller or valve positioner's pneumatic output signal sent to the actuator diaphragm casing.
Fisher 667 Size 45 Diaphragm Actuator 4" Easye Sliding Stem Control. Fisher 657 and 667 actuators are designed to provide dependable on/off or throttling operation of control valves The Fisher® 657 and 667 spring and diaphragm actuators are designed to provide dependable throttling or on-off operation of linear, sliding-stem automated control valve assemblies
Fisher 667 Size 45 Diaphragm Actuator 4" Easye Sliding Stem Control. The actuators position the valve plug in response to the controller or valve positioner's pneumatic output signal sent to the actuator diaphragm casing. Refer to separate instruction manuals for information about the valve positioner and other accessories used with these actuators.