Fisher 167D Series｜Versatile Pneumatic Switching Valves and Regulators

الفوائد والمزايا الرئيسية

• Compact Footprint: The small, streamlined design allows these valves to be mounted directly on actuators or within crowded instrument panels where space is at a premium.

• Two-Way and Three-Way Versatility:

  1. Types 167D and 167DS: Standard two-way switching valves for simple on/off or pressure reduction tasks.

  2. Types 167DA and 167DAS: Three-way switching valves, ideal for venting downstream pressure or switching between two different pneumatic sources.

• Easy and Accurate Adjustment: Features a simple adjusting screw that allows technicians to set the switching or regulated pressure with precision in the field.

• Rugged Construction: Built to withstand the vibrations and environmental stresses common in oil and gas and chemical processing plants.

• Corrosion Resistant Fasteners: Standard construction includes bolting and fasteners treated to resist atmospheric corrosion, ensuring the valve remains serviceable even in humid or coastal environments.

• Stainless Steel Material Option: For highly corrosive process environments or offshore applications, the 167DS and 167DAS models offer full stainless steel construction for maximum durability.

• Ease of Maintenance: The simple internal design allows for quick inspection of the valve plug and seat, minimizing downtime during routine instrument maintenance.

الخصائص التقنية

• Media: Gaseous fluids (Air, Natural Gas, Nitrogen).

• Maximum Inlet Pressure: Designed to handle standard instrument air and gas header pressures.

• Temperature Capabilities: Available in configurations suited for a wide range of ambient and process temperatures.

• End Connections: Typically 1/4-inch NPT for easy integration with standard pneumatic tubing and fittings.

• Construction Materials: Choice of Aluminum or Stainless Steel bodies to meet site-specific material specifications.

مجال التطبيق

The 167D Series is a fundamental component in pneumatic control logic. It is most often found serving as a “gas regulator” for high-performance pilots or as a switching relay in safety and sequencing circuits.

الصناعات والاستخدامات الرئيسية:

• Oil and Gas Production: Providing clean, regulated gas to pneumatic controllers on separators and wellhead skids.

• Chemical Processing: Managing signal air for control valve positioners and pneumatic relays.

• Pulp and Paper: Integrated into the pneumatic logic of automated processing machinery.

• Power Generation: Used in the control air systems for large-scale boiler and turbine dampers.