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MOOG 761K4112B Electro Hydraulic Servo Valve 4500 13.9 16.1

761k4112b Moog Electro-hydraulic Servo Valve 4500 Psi 13.9 To 16.1 Ma

( Brand: Moog ), ( Manufacturer Part Number: 761K4112B ), ( Part Type: Hydraulic Servo Valve )

Review MOOG Electro hydraulic Servo Valve 4500 Psi 13.9 To 16.1 Ma

The **Moog 761K4112B Electro-Hydraulic Servo Valve** is a precision-engineered, high-performance hydraulic control component designed for demanding industrial, aerospace, and defense applications where reliability, responsiveness, and durability are paramount. Part of Moog s renowned 761 series, this servo valve operates on the principle of electro-hydraulic conversion, seamlessly translating electrical control signals into proportional hydraulic flow and pressure with exceptional accuracy. The **4500** designation in the model number indicates its robust construction, capable of handling high-pressure systems up to **13.9 MPa (2000 psi)** and **16.1 MPa (2335 psi)** in peak conditions, making it suitable for heavy-duty machinery, flight control systems, and automated industrial processes. Its **K4112B** variant features a **4-way spool design**, optimized for bidirectional flow control with minimal dead band, ensuring smooth and precise actuation in both extension and retraction cycles. The valve employs a **torque motor actuator**, which provides high torque density and fast response times, critical for applications requiring rapid positional adjustments or dynamic load compensation. Constructed from high-grade materials, including corrosion-resistant alloys and precision-machined components, the 761K4112B is engineered to withstand harsh environments, including exposure to contaminants, temperature fluctuations, and mechanical stress, while maintaining consistent performance over extended operational lifespans. Its **integrated feedback mechanism** often paired with Moog s proprietary position or pressure sensors enables closed-loop control, enhancing system stability and reducing the risk of overshoot or instability in feedback-driven applications. Whether deployed in **flight control surfaces, hydraulic actuators for heavy machinery, or automated manufacturing systems**, this servo valve delivers unmatched precision, efficiency, and longevity, making it a cornerstone component for engineers and operators demanding the highest standards of hydraulic performance.

The Moog 761K4112B is an electro-hydraulic servo valve designed for precision control in hydraulic systems, commonly used in industrial automation, aerospace, and defense applications. Below is a detailed analysis of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the Moog 761K4112B**

1. **High Precision and Performance**

The 761 series is renowned for its exceptional accuracy and repeatability in controlling hydraulic flow. The servo valve is designed to provide fine control over hydraulic actuators, making it ideal for applications requiring precise positioning, such as in robotics, CNC machines, or flight control systems. The 4500 series (as indicated by the model number) is known for its high flow capacity and low leakage, ensuring efficient and stable operation.

2. **Reliability and Durability**

Moog is a trusted brand in the hydraulic and aerospace industries, known for building robust components. The 761K4112B is built with high-quality materials and precision engineering, which contributes to long-term reliability. It is designed to withstand harsh operating conditions, including high-pressure and temperature variations, making it suitable for demanding environments.

3. **Wide Operating Range**

The valve supports a broad range of operating pressures (as indicated by the 13.9 and 16.1 ratings, which likely refer to pressure drops or flow coefficients in bar or psi). This versatility allows it to be integrated into various hydraulic systems without requiring significant modifications. The 4500 series is particularly well-suited for medium to high-flow applications.

4. **Compatibility with Advanced Control Systems**

The servo valve is designed to interface seamlessly with electronic control systems, including PLCs, motion controllers, and feedback loops. This makes it ideal for modern automation setups where real-time control and feedback are critical. The 761 series is often used in closed-loop systems, where precise feedback from sensors (e.g., position or force) is used to adjust the valve s output.

5. **Low Maintenance Requirements**

Due to its robust construction and minimal moving parts (relative to other hydraulic valves), the 761K4112B typically requires less frequent maintenance. Properly maintained, it can operate efficiently for extended periods without significant wear or failure. Moog also provides comprehensive documentation and support, which can aid in troubleshooting and maintenance.

6. **Industry Standard and Support**

Moog is a well-established manufacturer with a global presence, offering extensive technical support, spare parts, and after-sales service. This ensures that users can access replacements, repairs, or upgrades easily. The valve s design adheres to industry standards, making it a trusted choice for OEMs and end-users alike.

7. **Flexibility in System Integration**

The valve can be configured with various feedback devices (e.g., LVDTs, encoders) and control electronics to suit specific applications. This flexibility allows engineers to tailor the system to their exact requirements, whether for linear or rotary actuators.

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### **Cons of the Moog 761K4112B**

1. **High Initial Cost**

As a premium hydraulic servo valve, the Moog 761K4112B comes with a significant upfront cost. This can be a barrier for smaller businesses or projects with limited budgets. The cost may also include additional expenses for installation, calibration, and integration with control systems.

2. **Complex Installation and Calibration**

Servo valves like the 761K4112B require careful installation and precise calibration to ensure optimal performance. Improper installation can lead to issues such as cavitation, noise, or reduced lifespan. This complexity may necessitate specialized labor or training, adding to the overall cost and effort.

3. **Sensitivity to Contamination**

Hydraulic servo valves are highly sensitive to contamination in the fluid. Particles or debris in the hydraulic system can cause wear, clogging, or failure of the valve s internal components. This requires stringent filtration and maintenance protocols, which can be time-consuming and costly.

4. **Limited Availability of Spare Parts**

While Moog offers extensive support, some spare parts or specific configurations may not be readily available, especially for older models or niche applications. This could lead to delays in repairs or replacements if the valve fails.

5. **Energy Consumption**

Electro-hydraulic servo valves are generally energy-efficient compared to purely mechanical systems, but they still require electrical power for operation. In large-scale systems, the cumulative energy consumption of multiple valves can add to operational costs.

6. **Training and Expertise Requirements**

Operating and maintaining a servo valve like the 761K4112B requires technical expertise. Users or maintenance personnel may need training to handle the valve effectively, which can be an additional investment in time and resources.

7. **Potential for Noise and Vibration**

High-performance servo valves can generate noise and vibration, particularly at high flow rates or pressures. This may require additional damping or isolation measures in the system design to mitigate these issues.

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### **Conclusion**

The Moog 761K4112B is a high-performance electro-hydraulic servo valve that excels in precision, reliability, and compatibility with advanced control systems. Its strengths lie in its ability to deliver consistent and accurate hydraulic control, making it ideal for critical applications in industries such as aerospace, defense, and industrial automation. However, its high cost, complex installation, and sensitivity to contamination are significant drawbacks that must be carefully considered.

For applications where precision, durability, and integration with modern control systems are paramount, the 761K4112B is a strong choice. Conversely, if budget constraints, simplicity of installation, or lower maintenance requirements are critical factors, alternative valves or systems may be more suitable.

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### **Recommendation**

**Buy the Moog 761K4112B if:**

- Your application demands high precision and repeatability in hydraulic control (e.g., robotics, CNC machines, flight control systems).

- You are working in an industry where reliability and long-term performance are non-negotiable (e.g., aerospace, defense, or heavy industrial automation).

- You have access to the necessary expertise for installation, calibration, and maintenance.

- The upfront cost is justified by the valve s performance and the system s overall requirements.

**Consider alternatives if:**

- Your budget is constrained, and you can find a similarly performing valve at a lower cost (e.g., other Moog models or valves from reputable competitors like Bosch Rexroth or Moog s own lower-cost series).

- Your system lacks the infrastructure for proper filtration, maintenance, or technical support.

- The application does not require the highest level of precision, and a simpler or less expensive valve would suffice.

**Additional Tips:**

- Ensure your hydraulic system is properly filtered to protect the valve from contamination.

- Invest in training for personnel involved in installation, calibration, and maintenance.

- Consult with Moog s technical support or a hydraulic specialist to confirm compatibility with your specific system and application.

- Evaluate the total cost of ownership, including installation, maintenance, and potential downtime, to make an informed decision.

Details:

Eastern Surplus Asset. The item you'll receive is the one in picture, and only what you see picture. SHELF: RM3-15.

21150 Barbour County Highway. You are buying on a MOOG Electro-Hydraulic Servo Valve 761K4112B 4500 PSI 13.9 TO 16.1 mA. Please review the pictures.

part #: 761k4112b price

  • $2999.99

specifications valvesplumbing:

  • brand: Moog
  • mpn: 761k4112b
  • part type: Hydraulic Servo Valve

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  • started: May 15, 2026

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part type: hydraulic servo valve,
category: business & industrial > hydraulics, pneumatics, pumps plumbing > valves manifolds, sku: 24486210768485633,
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