WOODWARD 9907-1321

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The WOODWARD 9907-1321 is an actuator, specifically a V45TD-2015-MURXM-X-S-X Double Acting Actuator. This information is consistently listed in Woodward’s industrial product catalog.

WOODWARD 9907-1321: V45TD Double Acting Actuator

The WOODWARD 9907-1321 plays a crucial role in industrial control systems. Its primary function is to convert a precise control signal—typically hydraulic or pneumatic pressure from a governor or another control module—into accurate linear mechanical motion. This motion is then utilized to operate various industrial devices, such as steam turbine valves, fuel valves, or dampers.

Product Overview

This particular part number designates a specific configuration within the robust V45TD series of actuators manufactured by Woodward. These actuators are widely recognized for their reliability and precision in demanding industrial environments.

• Product Type: Actuator
• Manufacturer: Woodward
• Part Number: 9907-1321
• Model Designation: V45TD-2015-MURXM-X-S-X
• Function: Converts hydraulic or pneumatic pressure into precise linear mechanical motion for controlling industrial equipment.
• Action Type: Double Acting. This means that pressure is actively applied to both sides of the internal piston, allowing for controlled movement in both extending and retracting directions. This design offers superior control compared to single-acting actuators that rely on a spring for return.
• Fail-Safe Direction: For “MUR” configurations in the V45TD series, this model is typically Fail-Retract. This implies that upon loss of power or control signal, the actuator is designed to retract to a safe, predefined position.

Detailed Product Description

The WOODWARD V45TD series actuators are engineered for durability and precise control in heavy-duty applications. While a comprehensive, publicly available datasheet specifically for the 9907-1321 might not be immediately available, its model designation provides key insights into its characteristics:

• Hydraulic or Pneumatic Operation: V45TD actuators can be operated using either hydraulic fluid (often turbine lube oil, especially in steam turbine applications) or pneumatic pressure. The precise pressure signal is supplied by an associated governor (like a TG series governor) or a dedicated electronic control system.
• Linear Mechanical Output: The actuator produces a linear force and stroke. This linear motion is mechanically linked to the component it is controlling, ensuring accurate positioning of elements such as steam turbine admission valves, fuel valves on engines, or large industrial dampers.
• Rugged Industrial Construction: These actuators are built to withstand the harsh realities of industrial settings. Their robust construction enables them to operate reliably under conditions of high temperatures, significant vibrations, and continuous duty cycles. Features like chrome-plated piston rods, internal and protected feedback sensors, stepped cushions, and triple shaft seal technology contribute to their longevity and ability to withstand side loads of up to 5% of the output force.
• Specific Configuration (2015-MURXM-X-S-X): The alphanumeric suffix provides specific details about this particular actuator:
  • The “2015” likely indicates a specific stroke length and bore size. For this model, it’s typically associated with an 8-inch diameter and a 6-inch stroke.
  • The remaining codes (MURXM-X-S-X) define various configuration options, which can include the rod end type (e.g., male), internal valving, feedback mechanisms (e.g., internal position feedback), special features, and potentially specific material compositions. These codes adhere to Woodward’s established naming conventions for actuator variants.

Technical Specifications (General for V45TD Actuators, Specifics for 9907-1321)

Typical Applications

The WOODWARD 9907-1321 V45TD Double Acting Actuator is commonly found in heavy industrial applications that demand precise, powerful, and reliable control over mechanical devices, including:

• Steam Turbines: Used for the accurate positioning of steam admission valves, which directly controls the flow of steam to the turbine and, consequently, its speed and power output.
• Gas Turbines: May be employed for the precise actuation of fuel gas or liquid fuel valves.
• Compressors and Pumps: In systems where precise flow or pressure regulation is achieved by adjusting large, heavy-duty valves or dampers.
• General Industrial Process Control: Any industrial process requiring robust, powerful, and highly accurate positioning of valves, louvers, or other control elements.