142U2D301CACAB165240 EMERSON

142U2D301CACAB165240 EMERSON Input module

Brand：Emerson Model number：142U2D301CACAB165240

Country of origin: United States Product weight：0.55kg

HS code：8517623990

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Product Dimensions：

The long code 142U2D301CACAB165240 is a configuration string for a complete valve assembly. While the exact Fisher code standard may vary, the interpretation of the key segments is as follows:

Valve Type/Body: Represents a high-performance control valve, likely a globe valve or a similar sliding stem design.
Body Material: Typically indicates a specific material like Carbon Steel (WCC/WCB) or Stainless Steel (CF8M), designed to handle the process fluid and temperature.
Trim/Inner Valve Parts: Defines the internal parts like the plug, seat ring, and cage. This is crucial for determining the valve's flow characteristics, capacity ( $C_v$ ), and sealing capability.
End Connections: Specifies the type of connection to the pipeline, such as flanged (e.g., ANSI Class 300) or welded ends.
Actuator: Likely specifies a pneumatic spring-and-diaphragm actuator (e.g., Fisher Type 667 or 585C).

Action: Defines whether the valve is Air-to-Open (Fail-Close) or Air-to-Close (Fail-Open) upon loss of air pressure.
Spring Range: Specifies the pressure range required to fully stroke the valve.

Accessories (165240 Segment): This segment usually specifies the instrumentation mounted on the actuator, which is critical for control.

Positioner: Likely an Electro-Pneumatic Positioner (e.g., Fisher DVC6200 Series or DVC2000 Series), which takes an electrical control signal (typically $4-20 \text{ mA}$ ) and converts it into the precise pneumatic pressure required to position the valve plug.
Other Accessories: May include air filter regulators, limit switches, or booster relays.

Product Advantages

Precise Process Control: When equipped with a digital valve controller (positioner), the assembly provides highly accurate and repeatable throttling control, leading to optimal process performance and reduced variability.
Robust Construction: Designed and built to ASME/ANSI standards for pressure boundary integrity, ensuring safe and reliable operation in demanding industrial environments.
Versatility: The modular design of Fisher valves allows for easy selection of different body materials, trims, and actuators to match a wide range of fluid conditions, temperatures, and pressures.
Advanced Diagnostics: Digital valve controllers (like the DVC series) offer advanced diagnostic capabilities, allowing operators to monitor valve performance, predict maintenance needs, and troubleshoot issues without removing the valve from the line.

Important Considerations (Precautions)

Proper Sizing: The valve must be correctly sized ( $C_v$ value) for the specific process conditions (flow rate, pressure drop, temperature) to ensure stable control and prevent issues like cavitation, flashing, or excessive noise.
Fluid Compatibility: Verify that all wetted parts (body, trim, seals) are chemically compatible with the process fluid to prevent corrosion or material degradation.
Air Supply Quality: The pneumatic actuator and positioner require a clean, dry, instrument-quality air supply. Contaminated air can lead to premature failure of the positioner and actuator components.
Calibration and Configuration: The digital positioner requires precise calibration and configuration (e.g., setting the travel limits, characterizing the flow) upon installation to ensure it accurately follows the controller's setpoint.
Maintenance Schedule: Adhere to the manufacturer's recommended maintenance and inspection schedules, particularly for soft goods (packing, gaskets, diaphragm), to maintain tight shutoff and prevent leakage.

Product Applications

This control valve assembly is used in any industry requiring automated, precise manipulation of fluid flow, pressure, or temperature.

Oil and Gas: Controlling the flow of crude oil, gas, and refined products in pipelines, separators, and compressor stations.
Chemical Processing: Regulating reactive components, solvents, and cooling media in reactors and distillation columns.
Power Generation: Managing steam and feedwater flow in boilers and turbines, as well as fuel gas control.
Water and Wastewater: Controlling the flow and level in treatment basins and pumping stations.
Pulp and Paper: Handling slurries, steam, and chemical additives throughout the papermaking process.

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