Fisher Control Valve 657 size 30 actuator 1.5” Plug valve

ACTUATOR

15PSI

5/8″ Travel

The Fisher Control Valve with 657 Size 30 Actuator and 1.5” Plug Valve is a reliable assembly designed for precise control of flow in industrial systems. Fisher, a division of Emerson, is known for producing high-quality valves and actuators for various demanding applications.

Key Features:

Valve Specifications:

1. Type: Plug Valve.
   • Designed for throttling or on/off service.
2. Size: 1.5 inches.
   • Suitable for moderate flow rates in pipelines.
3. Material:
   • Commonly constructed with corrosion-resistant materials such as stainless steel, but specific material depends on the application.
4. Flow Characteristics:
   • Customizable flow trim (e.g., linear, equal percentage, or quick opening).
   • Tight shutoff capability to prevent leakage.

Actuator Specifications:

1. Model: Fisher 657, Size 30.
   • Pneumatic diaphragm actuator.
2. Type:
   • Single-acting spring-return design.
   • Used for modulating or on/off control.
3. Air Supply:
   • Requires a clean, dry air supply; standard operating pressure range is typically 20-60 PSI.
4. Positioning:
   • Compatible with Fisher positioners for precise valve control.
5. Force Output:
   • The size 30 actuator provides sufficient torque for operating the 1.5” plug valve under most pressure conditions.

Performance:

• Pressure and Temperature Ratings:
  • Depends on valve body material and plug trim but typically handles a wide range of industrial conditions.
• Media Compatibility:
  • Suitable for gases, liquids, steam, and other process fluids.
• Leakage Class:
  • Can achieve tight shutoff per ANSI/FCI 70-2 standards (Class IV, V, or VI, depending on trim).

Applications:

• Oil and gas processing.
• Chemical and petrochemical plants.
• Power generation systems.
• Water treatment facilities.
• General process industries.

Advantages:

1. Precision Control:
   • The 657 actuator combined with a plug valve provides accurate flow control.
2. Durability:
   • High-quality materials ensure long service life even in harsh environments.
3. Flexibility:
   • Compatible with a wide range of positioners and controllers for advanced control strategies.
4. Ease of Maintenance:
   • Modular design allows for straightforward servicing and replacement of components.

Installation Notes:

1. Mounting:
   • Ensure proper alignment between the actuator and valve for optimal performance.
2. Air Supply:
   • Use clean, dry air to prevent actuator damage.
3. Calibration:
   • Calibrate the actuator with a positioner for precise control.
4. Maintenance:
   • Regularly inspect seals, diaphragms, and plug trim for wear or damage.
   • Lubricate moving parts as recommended in the manual.