Fisher 657 and 667 Diaphragm Actuators Askalon®

Fisher 657. Fisher 657 and 667 Diaphragm Actuators Askalon® 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 actuator in sizes 30/30i through 70/70i and size 87

FISHER 657 PNEUMATIC VALVE ACTUATOR SIZE 50 315PSI
FISHER 657 PNEUMATIC VALVE ACTUATOR SIZE 50 315PSI from www.nriparts.com

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 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 PNEUMATIC VALVE ACTUATOR SIZE 50 315PSI

The 657‐4 actuator in sizes 70/70i and 87 is also covered 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) The 657 actuator is direct-acting, while the 667 is reverse-acting.

Fisher 657 Size 30i 70i Diaphragm Actuators. Use of a positioner is recommended to ensure responsiveness in applications operating below-40C (-40F). 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 and 667 Diaphragm Actuators Askalon®. Fisher 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