Emerson Fisher 657 And 667 Installation Instructions

Fisher 657. FISHER TYPE 657 SIZE 30 ACTUATOR TYPE ED CI BODY 1 1/2 FISHER VALVE 30B The 657 actuator is direct-acting, while the 667 is reverse-acting. Use of a positioner is recommended to ensure responsiveness in applications operating below-40C (-40F).

The 657 actuator is direct-acting, while the 667 is reverse-acting. 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)

FISHER 657ES DVC6010 300 STEEL FLANGED 11/2IN CONTROL VALVE

The 657 actuator is direct-acting, while the 667 is reverse-acting. 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.

FISHER 657 ES ACTUATOR SIZE 45 STAINLESS FLANGED 150 6IN CONTROL VALVE. These spring-opposed diaphragm actuators position the valve plug in the valve in response to varying controller or valve positioner pneumatic output signals 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 657 SIZE 40 033PSI PNEUMATIC VALVE ACTUATOR D539531. Use of a positioner is recommended to ensure responsiveness in applications operating below-40C (-40F). The 657‐4 actuator in sizes 70/70i and 87 is also covered