Type 971 Pilot-Operated Pressure Regulator

The Type 971 Pilot-Operated Pressure Regulator is a robust and reliable pressure regulation solution designed for precise control of pressure in gas and liquid applications. It uses a pilot-operated mechanism to maintain a stable downstream pressure by adjusting the valve position in response to changes in system pressure. This type of regulator is ideal for applications requiring high accuracy and performance under varying flow conditions. It is widely used in industries such as oil and gas, chemical, and process control.

Specifications

• Manufacturer: Emerson (Fisher)

• Model: Type 971

• Regulator Type: Pilot-operated pressure regulator

• Operating Pressure Range:

  • Inlet Pressure: 10 to 1000 psi (depending on configuration)

  • Outlet Pressure: 0.2 to 200 psi

• Flow Capacity: Varies by model size (typically from 5 SCFM to several hundred SCFM)

• Temperature Range:

  • Standard: -40°F to 160°F (-40°C to 71°C)

  • Optional: High-temperature versions up to 300°F (149°C)

• Materials:

  • Body: Cast Steel or Stainless Steel (depending on model and application)

  • Internal Components: Stainless Steel or corrosion-resistant alloys for longevity

  • Elastomers: Nitrile or Fluoroelastomer for sealing

• Pilot Type: Diaphragm-actuated or piston-actuated pilot valves, depending on configuration

• Connections:

  • Inlet: Threaded or flanged connections (NPT, BSP, or ANSI flanges)

  • Outlet: Threaded or flanged

• Adjustable Range: Precise adjustment of the downstream pressure

• Accuracy: ±2% of set pressure (depending on specific model and configuration)

• Size Options: Available in multiple sizes to accommodate various flow rates and application requirements

• Installation: Can be installed in horizontal or vertical positions based on system requirements

• Compliance: Meets relevant industry standards, including ANSI, ASTM, and API (where applicable)

Key Features

1. Pilot-Operated Control: The Type 971 regulator uses a pilot valve mechanism to ensure accurate control and stability of downstream pressure, even with varying inlet pressures and flow rates.

2. High Accuracy: Designed for applications requiring precise pressure control, with a typical accuracy of ±2% of set point.

3. Wide Pressure Range: Capable of handling a wide range of inlet and outlet pressures, making it suitable for various applications across different industries.

4. Durable Construction: Made from high-quality materials such as cast steel or stainless steel, ensuring durability and resistance to corrosion in harsh environments.

5. Flexible Installation: Can be installed in multiple orientations (horizontal or vertical), providing flexibility for different systems.

6. Customizable Options: Available with different materials, elastomers, and temperature ratings to meet specific application requirements.

Applications

1. Oil & Gas Industry: Used in natural gas pipelines, compressors, and gas distribution systems to regulate pressure for safe and efficient operation.

2. Chemical & Petrochemical Plants: For regulating pressure in reactors, storage tanks, and other critical process control systems.

3. Refining: Ensuring proper pressure management in refining processes, including distillation columns and catalytic reactors.

4. Power Generation: In steam and gas turbine systems to control and stabilize pressure within the system.

5. Water & Wastewater Treatment: Used in water distribution networks and treatment plants to control pressure and flow.

6. General Industrial Applications: Regulating pressure in industrial processes that require stable and consistent pressure levels.