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The WOODWARD 9907-861 is a specific configuration of a GSOV25 Gas Shutoff Valve. This valve is a crucial safety component designed for industrial gas turbines, used to rapidly and reliably stop the flow of gaseous fuel to the turbine.
WOODWARD 9907-861: GSOV25 Gas Shutoff Valve
The WOODWARD 9907-861 is an essential part of a turbine’s fuel system, providing a fast and secure means to shut off gaseous fuel flow in emergency situations or during normal shutdown sequences. Its robust design ensures high reliability in demanding industrial environments.
Product Overview
This particular part number represents a specific variant within Woodward’s GSOV25 series of gas fuel shutoff valves. The GSOV25 valves are generally smaller than the GSOV80 series but are still built for high-pressure, high-flow applications typical of many industrial gas turbines.
- Product Type: Gas Fuel Shutoff Valve
- Manufacturer: Woodward
- Part Number: 9907-861
- Model Designation: GSOV25
- Key Specifications (based on typical GSOV25 configurations for this P/N):
- Input Voltage: 24 VDC.
- Features: Includes an open position switch, which provides feedback to the control system indicating that the valve is fully open.
- Temperature Rating: Designed for High Temperature (HT) operation, implying it’s built to withstand elevated fuel or ambient temperatures common in turbine environments.
- Body Material: Typically features all stainless steel construction, ensuring excellent corrosion resistance and durability.
- Operating Pressure: Rated for pressures up to 900 psia (6.2 MPa).
- Function: The GSOV25 valve acts as a positive shutoff device. When commanded by the turbine’s control system (or in the event of a safety trip), it quickly de-energizes its solenoid, causing the valve to close rapidly and completely block the flow of gaseous fuel to the turbine. This rapid closure is vital for safe shutdown, preventing overspeed, or addressing other critical abnormal operating conditions.
Detailed Product Description
The Woodward 9907-861 GSOV25 Gas Fuel Shutoff Valve is engineered for safety and reliability in demanding gas turbine applications. Key features common to the GSOV25 series that apply to this model include:
- Positive Shutoff: Designed to provide a tight, leak-free seal when closed, ensuring complete isolation of the fuel supply to the turbine. This is paramount for safety.
- Fast Acting: Engineered for rapid closure to quickly stop fuel flow during emergency shutdowns, minimizing potential damage or hazardous conditions.
- High Pressure Capability: Built to withstand and operate reliably under the high pressures associated with gaseous fuel delivery in industrial turbines.
- Robust Stainless Steel Construction: The all-stainless steel body ensures superior corrosion resistance and durability, making it suitable for a wide range of gaseous fuels and harsh operating environments.
- Open Position Switch: The inclusion of an open position switch provides important feedback to the turbine control system, confirming the valve’s status for safe operation and diagnostic purposes.
- High Temperature Operation: The “HT” designation indicates its suitability for environments where fuel gas or ambient temperatures can be elevated.
- Minimal Pressure Drop: The valve’s design often prioritizes a straight-through flow path to minimize pressure drop, which contributes to lower gas compression operating costs. Critical moving parts and seals are typically kept out of the main flow stream to reduce wear.
Technical Specifications (for the 9907-861 GSOV25)
Typical Applications
The WOODWARD 9907-861 GSOV25 Gas Fuel Shutoff Valve is commonly found in safety-critical roles within:
- Industrial Gas Turbine Power Generation: Used in power plants to ensure the rapid and safe shutdown of gas turbines.
- Oil & Gas Industry: Employed in gas turbines driving compressors or pumps in pipelines, processing facilities, and offshore platforms, where emergency fuel cutoff is vital.
- Industrial Cogeneration Plants: Part of the safety system for gas turbines used in combined heat and power applications.
