WOODWARD 9907-1728

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The WOODWARD 9907-1728 is an actuator, specifically a V45TD-1020-MURXM-X-S-X Double Acting Actuator. This information comes from the Woodward Industrial Products Catalog, which lists various components and their corresponding part numbers.

It’s important to distinguish this from the 9907-173 or 9907-1730 which refer to a Load Sharing Module. The 9907-1728 is a different type of device altogether.

WOODWARD 9907-1728: V45TD Double Acting Actuator

The WOODWARD 9907-1728 is a part of Woodward’s actuator product line. Actuators are crucial components in control systems, responsible for converting a control signal (often hydraulic or pneumatic pressure from a governor) into mechanical motion to operate a device, such as a turbine’s steam valve or a damper.

Product Overview

This specific part number identifies a particular configuration of the V45TD series of actuators.

• Product Type: Actuator
• Manufacturer: Woodward
• Part Number: 9907-1728
• Model Designation: V45TD-1020-MURXM-X-S-X
• Function: Converts hydraulic or pneumatic pressure into linear mechanical motion to operate a valve, damper, or other controlled device.
• Action Type: Double Acting. This means the actuator uses pressure to move the piston in both directions (e.g., to open and close a valve), as opposed to single-acting actuators which rely on a spring return for one direction.

Detailed Product Description

The WOODWARD V45TD series of actuators are known for their robust design and ability to provide precise control over various industrial equipment. While detailed specifications for the 9907-1728 specifically are not as widely published as full control units, the “V45TD” series provides general characteristics:

• Hydraulic or Pneumatic Operation: V45TD actuators typically operate using a hydraulic power medium (e.g., oil pressure) or sometimes pneumatic pressure, driven by a governor or control system.
• Double-Acting Design: The “Double Acting” characteristic is key. It implies that hydraulic/pneumatic pressure is actively applied to both sides of the piston, allowing for controlled movement in both extending and retracting directions. This provides more positive control and can eliminate the need for large return springs.
• Mechanical Output: The actuator produces a linear mechanical force and stroke, which is then coupled to the device it controls (e.g., a turbine’s steam admission valve, a fuel valve, or a damper).
• Robust Construction: Designed for industrial environments, these actuators are built to withstand demanding operating conditions, including high temperatures, vibrations, and continuous duty cycles.

The specific “1020-MURXM-X-S-X” suffix in the model designation V45TD-1020-MURXM-X-S-X would define:

• Stroke Length: The “1020” likely relates to the stroke length in millimeters or a similar unit, indicating the maximum linear travel of the actuator.
• Mounting and Configuration Details: The subsequent letters and numbers (MURXM, X, S, X) denote various configuration options such as mounting style, special features, internal valving, feedback mechanisms, and potentially material specifications. Without a specific product manual for this exact part number, the precise meaning of each character is speculative, but they follow a standard Woodward naming convention for actuators.

Technical Specifications (General for V45TD Actuators, Specifics for 9907-1728)

Typical Applications

The WOODWARD 9907-1728 V45TD Double Acting Actuator is commonly found in heavy industrial applications requiring precise and reliable control of mechanical devices:

• Steam Turbines: Used to position steam admission valves, controlling the flow of steam to the turbine and thus its speed and power output.
• Gas Turbines: May be used for fuel gas or liquid fuel valve actuation.
• Compressors and Pumps: In systems where precise flow or pressure regulation is achieved by adjusting large valves or dampers.
• Process Control: General industrial processes requiring robust, powerful, and accurate valve or damper positioning.