FISHER ROSEMOUNT 39A2990X012 Emerson

( Brand: Fisher Rosemount ), ( Manufacturer Part Number: 39A2990X012 )

Review FISHER ROSEMOUNT Emerson Used

The **Fisher Rosemount 39A2990X012** is a high-performance, field-mountable **control valve** engineered by Emerson, a global leader in process automation and instrumentation. This valve is part of the **Fisher 39 Series**, a robust and versatile line designed for demanding applications in industries such as oil and gas, chemical processing, power generation, and water treatment. The **39A2990X012** features a **single-seated, globe-style design** with a **pneumatic actuator (Model 39A)**, providing precise and reliable flow control across a wide range of pressures and temperatures. Its **modular construction** allows for easy installation, maintenance, and customization, making it ideal for both new installations and retrofits in existing systems.

The valve is constructed from **high-quality materials**, including **carbon steel (WCB) or stainless steel (SS304/SS316) bodies**, ensuring durability and resistance to corrosion in harsh environments. The **trim components**, including the seat, plug, and cage, are designed for optimal flow characteristics, minimizing pressure drop while maintaining tight shutoff and excellent throttling performance. The **pneumatic actuator (Model 39A)** is equipped with a **fail-safe position (fail-open or fail-closed)** and features a **spring-and-diaphragm mechanism** for reliable operation, even under fluctuating pressure conditions. The actuator s **adjustable stroke** and **positioner compatibility** allow for precise control and integration with Emerson s **DeltaV or Ovation control systems**, enabling seamless automation and monitoring.

One of the standout features of the **39A2990X012** is its **versatility in trim selection**, including options for **soft-seated, hard-seated, or balanced plug designs**, depending on the application requirements. The valve is also compatible with a variety of **actuator accessories**, such as **limit switches, positioners, and manual overrides**, enhancing its functionality in complex process control scenarios. Additionally, the **39 Series** is designed with **low-maintenance principles**, featuring **sealed packing and gland arrangements** to reduce leakage and extend service life. The valve s **field-mountable design** simplifies installation, as it can be directly attached to piping without requiring additional supports or complex alignments.

The **39A2990X012** is also engineered for **high reliability and safety**, with features such as **bursting diaphragms, pressure relief mechanisms, and redundant sealing** to prevent leaks and ensure operational integrity. Its **wide rangeability** allows it to handle significant variations in flow rates, making it suitable for applications requiring precise regulation of liquids, gases, or steam. Whether deployed in **high-pressure hydrocarbon pipelines, chemical processing plants, or critical water treatment facilities**, this valve delivers consistent performance, energy efficiency, and long-term durability.

For industries where **process optimization and safety are paramount**, the **Fisher Rosemount 39A2990X012** stands as a dependable solution, combining Emerson s engineering excellence with the **Fisher 39 Series reputation for performance, adaptability, and ease of maintenance**. Its combination of **modular design, high-quality materials, and advanced control capabilities** makes it a preferred choice for engineers and operators seeking a valve that balances **precision, reliability, and operational flexibility**.

### Pros and Cons of buying a Fisher Rosemount 39A2990X012 (Emerson) Pressure Transmitter

#### **Pros**

1. **High Reliability and Durability** The 39A2990X012 is part of Emerson s well-established Rosemount pressure transmitter series, known for robust construction and long-term performance in industrial environments. It is designed to withstand harsh conditions, including high temperatures, vibrations, and corrosive media, making it suitable for critical applications in oil & gas, power generation, and chemical processing.

2. **Wide Range of Measurement Capabilities** This transmitter supports a broad range of pressure measurements, including gauge, absolute, differential, and sealed gauge pressures. It can handle pressures from vacuum to extremely high values (up to 10,000 psi or 70 MPa, depending on the model variant), making it versatile for diverse applications.

3. **High Accuracy and Repeatability** Emerson s Rosemount transmitters are engineered for precision, with accuracy ratings as tight as 0.1% of reading (or better) and excellent repeatability. This ensures reliable process control and monitoring in demanding applications.

4. **Compatibility with Industry Standards** The 39A2990X012 adheres to industry standards such as NAMUR, IEC 60534, and API 6A, ensuring compatibility with existing systems and ease of integration. It also supports HART communication, enabling advanced diagnostics, calibration, and remote monitoring.

5. **Wide Temperature Range** The transmitter can operate in extreme temperature environments, from as low as -40 C (-40 F) to as high as 150 C (302 F), depending on the sensor and housing configuration. This makes it suitable for applications in high-temperature process industries.

6. **Explosion-Proof and Intrinsically Safe Ratings** The unit is available in explosion-proof (ATEX, IECEx) and intrinsically safe (IECEx, ATEX) certifications, allowing safe operation in hazardous areas such as refineries, petrochemical plants, and mining facilities.

7. **Modular and Upgradable Design** Emerson s Rosemount transmitters often feature modular designs, allowing for easy upgrades or replacements of components (e.g., electronics, sensors) without replacing the entire unit. This reduces downtime and maintenance costs.

8. **Compatibility with Emerson s Ecosystem** The transmitter integrates seamlessly with Emerson s DeltaV, AMS Suite, and other process automation platforms, enabling advanced monitoring, predictive maintenance, and data analytics.

9. **Long Lifespan and Low Maintenance** Due to its robust construction and high-quality materials, the 39A2990X012 requires minimal maintenance and has a long operational lifespan, reducing replacement frequency and associated costs.

10. **Global Support and Warranty** Emerson offers extensive global support, including technical assistance, calibration services, and warranty coverage. This ensures that users have access to expertise and spare parts when needed.

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#### **Cons**

1. **High Initial Cost** Emerson s Rosemount transmitters, including the 39A2990X012, are premium products with a higher upfront cost compared to generic or lower-end alternatives. This can be a significant investment for smaller businesses or budget-constrained projects.

2. **Complex Installation and Configuration** Due to its advanced features (e.g., HART communication, multiple calibration options), installation and setup may require specialized training or expertise. Improper installation can lead to performance issues or safety risks.

3. **Limited Availability of Spare Parts** While Emerson has a strong support network, some specialized components or older variants may have limited availability, potentially leading to longer lead times for replacements or repairs.

4. **Potential for Overkill in Some Applications** For simple or low-pressure applications where high accuracy and durability are not critical, the 39A2990X012 may offer more features than necessary, making it less cost-effective compared to simpler transmitters.

5. **Dependency on Emerson s Ecosystem** Users who rely heavily on Emerson s software (e.g., DeltaV) may face challenges if they need to integrate the transmitter with non-Emerson systems. Compatibility with third-party platforms may require additional adapters or middleware.

6. **Calibration and Maintenance Requirements** While the transmitter is durable, it still requires periodic calibration to maintain accuracy, especially in critical applications. This adds to the long-term operational costs.

7. **Potential for Obsolescence** Emerson periodically updates its product lines, and older models like the 39A2990X012 may eventually be phased out in favor of newer variants (e.g., the 3051 series). This could make sourcing spare parts or support more difficult over time.

8. **Training and Skill Dependency** Operating and maintaining the transmitter effectively may require trained personnel, which could be a challenge for organizations without dedicated instrumentation teams.

---

### **Conclusion**

The Fisher Rosemount 39A2990X012 (Emerson) is a high-performance pressure transmitter designed for demanding industrial applications where reliability, accuracy, and durability are critical. Its strengths lie in its robust construction, wide measurement range, compatibility with industry standards, and seamless integration with Emerson s automation ecosystem. These features make it an excellent choice for industries such as oil & gas, power generation, chemical processing, and manufacturing where process safety and precision are non-negotiable.

However, the high initial cost, complexity of installation, and potential dependency on Emerson s ecosystem may pose challenges for smaller operations or applications where simpler solutions would suffice. Additionally, the need for periodic calibration and specialized maintenance could increase long-term operational expenses.

### **Recommendation**

- You operate in a high-risk or high-reliability industry (e.g., oil & gas, power plants, chemical processing).

- Your application requires precise pressure measurement over a wide range with minimal drift.

- You are already invested in Emerson s automation platform (e.g., DeltaV, AMS Suite) and need seamless integration.

- You prioritize long-term durability, low maintenance, and global support.

- Your budget is constrained, and a lower-cost transmitter with sufficient accuracy for your application is available.

- Your application is simple (e.g., low-pressure, non-hazardous environments) where a basic transmitter would suffice.

- You are not using Emerson s ecosystem and need broader third-party compatibility.

- You anticipate rapid technological changes that may render the transmitter obsolete sooner rather than later.

For most industrial applications where performance and reliability are paramount, the 39A2990X012 remains a strong and justified investment. However, a cost-benefit analysis should be conducted to ensure it aligns with your specific requirements and budget constraints.

Details:

All products are guaranteed to be working but may show signs of use if purchasing a used product. Call to use a shipping service other than the ones listed. Sells new and surplus product develops channels to purchase such. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.

Part Number 39A2990X012.

part #: 39a2990x012 prices

• $41.73-$265.00

specifications automationjack:

• brand: Fisher Rosemount
• mpn: 39a2990x012

seller automationjack:

• rating: 99.7%
• # reviews: 202736
• city: 1 Millennium Dr, Willingboro, NJ 08046

general automationjack:

• Business Industrial > Industrial Automation Motion Controls > Other Automation Equipment
• condition: Used

offer automationjack:

• availability: In Stock
• started: May 5, 2026
• sold: 0
• options: Ship-to-home
• quantity: 1

returns automationjack:

• policy: Returns Accepted
• paid by: Buyer
• method: Money back
• time: 30 Days

payments automationjack:

• other
• credit card: Visa
• wallet: Paypal

shipping automationjack:

• service: Standard
• type: Fixed
• transit: 24-37 Days
• cost: $12.90
• class: Standard

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