Fisher 657 and 667 Diaphragm Actuators, paired with the DVC2000 and DVC6200 digital valve controllers, deliver reliable, high-performance pneumatic control for linear valves in oil and gas, chemical, power, and industrial process applications. Designed for precision throttling and on/off service, these actuators combine robust construction with smart positioner technology to optimize process control, reduce maintenance, and improve operational safety.
| Specification | Details |
|---|---|
| Actuation | Spring-return, Linear |
| Control Type | On/Off, Throttling |
| Power Source | Pneumatic, Manual override available |
| Certifications | SIL capable, ATEX, CUTR, PED |
| Operating Temp | Cryogenic, Low, Standard, High Temperature options |
| Compatible Valves | Globe Valve, Angle Valve |
| Positioner Models | DVC2000, DVC6200 Digital Valve Controllers |
| Construction | Cast Iron, Steel, Molded Diaphragm |
Q: What is the difference between the Fisher 657 and 667 actuators?
A: The 657 is a general-purpose linear diaphragm actuator, while the 667 offers additional flexibility for external tubing and accessory integration, making it suitable for more complex process environments.
Q: Are these actuators compatible with non-Fisher valves?
A: Yes, they can be adapted to most linear globe and angle valves with appropriate mounting kits, though performance is optimized for Fisher valve assemblies.
Q: Can the DVC2000/DVC6200 positioners work with existing control systems?
A: Yes, they support multiple communication protocols and integrate seamlessly with most modern distributed control systems (DCS).
Q: What certifications do these products have?
A: They come with SIL capability, ATEX, CUTR, and PED certifications, meeting global safety and regulatory standards.
Q: Do you offer custom configurations for special applications?
A: Yes, custom spring ranges, temperature ratings, and materials are available upon request to meet specific process conditions.
For pricing, lead times, or technical support, please reach out to our sales team:
wechat/what's app/phone number: +86 13472860702
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