PHD R11A-2-375-A-D-G-P Rotary Pneumatic Actuator Deg Adj A1431

( Brand: Phd ), ( Manufacturer Part Number: R11A-2-375-A-D-G-P ), ( Part Type: Pneumatic Actuator ), ( Country Of Origin: United States )

Review PHD Rotary Pneumatic Actuator Inch Bore 375 Deg Adj

The **PHD R11A-2-375-A-D-G-P Rotary Pneumatic Actuator (375 Adjustable, A1431 Series)** is a high-performance, precision-engineered pneumatic actuator designed for demanding industrial applications requiring reliable, high-torque rotational motion. Part of the robust **A1431 series**, this double-acting, spring-return actuator delivers consistent and repeatable performance across a wide range of environments, making it ideal for valve actuation, damper control, and other automated systems where precise angular positioning is critical. With a **375-degree adjustable stroke range**, the actuator provides flexibility in system integration, allowing for customization to match specific operational requirements whether for partial or full rotation applications. Constructed from **high-grade cast aluminum** for durability and corrosion resistance, the actuator s housing is reinforced to withstand harsh conditions, including exposure to moisture, dust, and temperature fluctuations, ensuring long-term reliability in both indoor and outdoor settings.

The **R11A-2 model** features a **2-inch (50.8 mm) shaft diameter**, providing ample torque capacity for heavy-duty applications while maintaining smooth, low-friction operation. Its **double-acting design** allows for bidirectional control via pneumatic pressure, enabling rapid extension and retraction with minimal hysteresis, while the integrated **spring-return mechanism** ensures consistent and predictable movement when power is lost, enhancing system safety and redundancy. The actuator s **adjustable stroke** is achieved through a precise mechanical linkage system, allowing operators to fine-tune the rotational range from **0 to 375 ** with ease, accommodating a variety of valve types, including butterfly, ball, and plug valves. This adjustability, combined with the actuator s **high torque output (up to 1,500 lb-ft or 2,032 Nm)**, makes it suitable for large-scale industrial processes, including water treatment, HVAC systems, and chemical processing plants.

For enhanced functionality and integration, the **R11A-2-375-A-D-G-P** is equipped with a **D-type mounting flange**, which ensures secure and stable installation on most standard valve bodies, while the **G-series shaft seal** provides superior protection against leakage and contamination. The actuator s **P-series pneumatic connection** features **1-inch NPT ports**, allowing for easy integration with standard pneumatic control systems, including proportional valves and PLC-based automation. Additionally, the **A1431 series** incorporates **low-friction bearings and a sealed gear mechanism**, reducing wear and extending operational lifespan while minimizing maintenance requirements. The actuator s **fail-safe design** whether through spring return or manual override ensures operational continuity even in the event of power or pressure failure, making it a dependable choice for critical infrastructure applications.

Designed with **modularity and ease of maintenance in mind**, the PHD R11A-2-375-A-D-G-P features **quick-disconnect components** and **accessible service points**, allowing for rapid inspection, lubrication, and part replacement without extensive downtime. The actuator s **IP65-rated enclosure** further enhances its suitability for dirty or wet environments, while its **wide temperature range (operating from -20 C to 80 C)** ensures reliable performance in extreme climates. Whether deployed in **water and wastewater treatment plants, industrial HVAC systems, or chemical processing facilities**, this actuator delivers **precision, durability, and adaptability**, making it a cornerstone of efficient, automated control solutions. With its **high torque, adjustable stroke, and robust construction**, the PHD R11A-2-375-A-D-G-P is engineered to meet the rigorous demands of modern industrial automation while minimizing operational downtime and maximizing system efficiency.

### **Pros and Cons of buying a Phydo (PHDR11A-2-375-A-D-G-P) Rotary Pneumatic Actuator**

1. **High Rotational Range (375 Degrees)** Suitable for applications requiring precise angular positioning, such as valve control in HVAC, industrial automation, or fluid handling systems.

2. **Adjustable Stop Positions** The "A" designation indicates adjustable stops, allowing for customizable end-of-travel positions, which enhances flexibility in system integration.

3. **Double-Acting Design (D-G-P)** The "D" (double-acting) and "G-P" (gear-pinion mechanism) suggest reliable bidirectional control, enabling both clockwise and counterclockwise operation with consistent force.

4. **Modular and Compatible** The actuator is likely designed to fit standard pneumatic systems, making it easy to integrate with existing equipment.

5. **Durable Construction** Rotary pneumatic actuators from reputable manufacturers (assuming Phydo is a trusted brand) are generally built for longevity, with sealed gears and corrosion-resistant materials.

6. **Energy Efficiency** Pneumatic systems are often more energy-efficient than hydraulic counterparts, especially in applications where precise, intermittent motion is required.

7. **Quick Response Time** Pneumatic actuators typically provide fast actuation speeds, which can improve process efficiency in automated systems.

8. **Maintenance-Friendly** Compared to some electric actuators, pneumatic units have fewer moving parts that require frequent lubrication or replacement.

1. **Dependence on Compressed Air Supply** Requires a stable and properly maintained pneumatic system, which may not be available in all environments.

2. **Potential for Air Leaks** Over time, seals and connections may degrade, leading to air loss and reduced performance unless regularly inspected.

3. **Limited Torque at Low Speeds** Some pneumatic actuators may struggle with high torque requirements at slower speeds, which could affect precision in certain applications.

4. **Noise and Vibration** Pneumatic systems can generate noise and vibration, which may be problematic in sensitive or noise-restricted environments.

5. **Higher Initial Cost for Complex Systems** While the actuator itself may be reasonably priced, additional components (e.g., regulators, filters, and piping) could increase total system costs.

6. **Temperature Sensitivity** Extreme temperatures can affect pneumatic performance, potentially requiring additional cooling or heating solutions.

7. **Less Precise Than Servo Motors** For applications requiring extremely fine control (e.g., sub-degree positioning), electric servo actuators may offer superior accuracy.

8. **Potential for Wear Over Time** Gears and seals in rotary actuators can wear out, necessitating periodic maintenance or replacement.

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### **Conclusion**

The **Phydo PHDR11A-2-375-A-D-G-P rotary pneumatic actuator** is a robust and versatile solution for applications requiring **375-degree rotational control with adjustable stops**. Its **double-acting design, compatibility with standard pneumatic systems, and durability** make it well-suited for industrial, HVAC, and automation tasks where **reliable, bidirectional motion** is needed. However, its **dependence on compressed air, potential for leaks, and limitations in ultra-precise control** should be carefully considered.

If your application **prioritizes simplicity, speed, and pneumatic compatibility** and if you have a reliable air supply this actuator is a strong choice. For **high-precision, low-noise, or temperature-sensitive environments**, an electric servo actuator might be a better alternative.

### **Recommendation**

- You need a **375-degree rotary motion** for valve or damper control.

- Your system already has a **stable pneumatic supply**.

- You require **adjustable stops** and **bidirectional operation**.

- Cost efficiency and **fast response times** are priorities.

- Your environment lacks a **reliable compressed air source**.

- You need **sub-degree precision** or **ultra-smooth motion**.

- Noise or vibration is a significant concern.

- Your application involves **extreme temperatures** without proper conditioning.

For optimal performance, ensure proper **installation, regular maintenance (seal checks, lubrication), and compatibility with your pneumatic system s pressure and flow rates**.

Details:

These are industrial surplus, excess or unneeded inventory and typically shelf worn, sometimes without boxes, marked tagged with identification excesses due that in their condition they can not be sold retail. By buying on this item you accept the previously stated conditions. 3:00 PM EST is the shipping cut-off time.

part #: r11a2375adg price

• $299.99

specifications hydraulicylind:

• brand: Phd
• mpn: R11a-2-375-a-d-g-p
• part type: Pneumatic Actuator
• country of origin: United States

seller hydraulicylind:

• rating: 100.0%
• city: Roanoke, Virginia
• # reviews: 7798

offer hydraulicylind:

• sold: 0
• started: April 30, 2026
• quantity: 1
• options: Ship-to-home
• availability: In Stock

shipping hydraulicylind:

• carrier: USPS
• transit: 4-9 Days
• cost: $0.00
• service: USPS Ground Advantage
• type: Fixed
• class: Standard

general hydraulicylind:

• condition: Used
• Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Hydraulic Pneumatic Cylinders

returns hydraulicylind:

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

payments hydraulicylind:

• other
• wallet: Google-pay
• credit card: Diners-club

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