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  • Quality Fisher 667 Actuator Diaphragm pneumatic factory

    Fisher 667 Actuator Diaphragm pneumatic

    Fisher 657 and 667 spring-opposed diaphragm actuators position the valve plug in the valve in response to varying controller or valve positioner pneumatic output signals applied to the actuator diaphragm. Zero setting of the actuator is determined by the compression of the actuator spring. Span is ...

  • Quality Fisher 657 Actuator Diaphragm pneumatic factory

    Fisher 657 Actuator Diaphragm pneumatic

    Fisher 657 and 667 spring-opposed diaphragm actuators position the valve plug in the valve in response to varying controller or valve positioner pneumatic output signals applied to the actuator diaphragm. Zero setting of the actuator is determined by the compression of the actuator spring. Span is ...