The LM2500 Wrench – Horizontal/Vertical HPT Coupling Nut is a specialized maintenance tool designed for the LM2500 gas turbine engine. This wrench is used to install and remove the High Pressure Turbine (HPT) coupling nut, a critical component that secures the HPT rotor to the turbine shaft.

Removing and installing the coupling nut is necessary during major maintenance activities like rotor inspections, repairs, or when replacing key turbine components. Proper removal allows technicians to safely separate the rotor from the shaft, while correct installation ensures the rotor is securely fastened for reliable engine operation.

What makes this wrench stand out is its ability to work with both horizontal and vertical engine positions. This means technicians can use it easily no matter how the engine is set up, making maintenance simpler and more flexible.

Built to precise standards and made from tough materials, the wrench ensures the right amount of force is applied when tightening or loosening the coupling nut. This careful control helps protect the engine’s important parts from damage.

By using this wrench, maintenance teams can complete their work faster and with confidence, reducing downtime and keeping the turbine reliable. It’s an essential tool that supports the smooth operation of the LM2500 engine.

The 2″ Gas Metering Valve is designed to precisely control the flow of gas fuel in aero-derivative gas turbines, including the LM2500. By adjusting fuel delivery based on operating conditions, it maintains the optimal fuel-to-air ratio essential for safe, efficient, and reliable turbine operation.

Fuel metering valves act as the throttle control for gas turbines. Since turbines generate power by burning fuel mixed with compressed air, accurate regulation of this mixture directly impacts power output, efficiency, and emissions such as nitrogen oxides (NOx) and carbon monoxide (CO).

This valve delivers exceptional accuracy within ±1% of the flow point, ensuring consistent fuel delivery and optimal combustion. It is built to perform reliably in demanding environments and meets safety standards including ATEX, PED, and UL, certifying it for use in hazardous and extreme conditions.

The fuel metering valve is a two-inch right-angle style valve commonly used on aero-derivative turbines. It integrates easily into existing systems without requiring hydraulic or electrical changes. With millions of hours of proven field performance, it offers dependable, precise fuel control that enhances turbine efficiency and reduces fuel consumption.

The Single Annular Combustor (SAC) version of the LM2500+G4 is designed for oil and gas applications that prioritize consistent performance, fuel flexibility, and emissions control—such as LNG facilities, gas processing plants, and pipeline compression, both onshore and offshore.

What makes the SAC version different is its simpler combustor design compared to dual annular or premix types. The SAC uses a through-flow, venturi swirler to ensure an even temperature profile at the turbine inlet, helping extend hot section life. It features individually replaceable fuel nozzles, a durable machined-ring liner, and a thermal barrier coating for better resistance to high temperatures and corrosion. This design supports both dry operation (with higher emissions) and water or steam injection to reduce NOx when needed—making it adaptable to site-specific emission regulations.

The LM2500+G4 SAC builds on the proven LM2500+ design, with approximately 10% more power. This gain comes from increased airflow, improved internal cooling, and material upgrades—while keeping the same number of compressor and turbine stages. The 17-stage high-pressure axial compressor and the basic engine layout remain unchanged, making it easy to maintain and service.

The engine can run on a wide range of liquid and gas fuels, allowing flexibility in remote or supply-constrained locations. It achieves up to 40% thermal efficiency in simple cycle mode. Water-injected operation enables NOx emissions as low as 25 ppm (gas) and 42 ppm (liquid).

In short, the LM2500+G4 SAC is well-suited for high-power mechanical drive and power generation in harsh or remote oil and gas environments, offering a balance of power output, fuel versatility, and emissions control.

The LM2500+G4 SAC 50Hz Combined Cycle 2x1 is a high-performance gas turbine system designed for large-scale, high-efficiency power generation, particularly suited to the needs of oil and gas operations. This configuration links two LM2500+G4 gas turbines with a single steam turbine in a combined cycle layout—capturing waste heat from the gas turbines to produce steam and generate additional power. This approach significantly improves overall thermal efficiency while maintaining operational flexibility.

The Single Annular Combustor (SAC) with optional water injection helps the system meet emissions rules while keeping combustion stable and efficient. The LM2500+G4 improves on the previous +G4 model by increasing airflow, using better materials, and adding improved cooling. This allows it to produce about 10% more power without reducing the lifespan of critical hot parts. It can be equipped with either a two-stage or six-stage power turbine to fit different needs. Even with the higher power output, the +G4 keeps its modular, two-spool design, which makes maintenance easier and ensures reliable performance in many environments.

In the 2x1 configuration, the system delivers approximately 41% more power than a single gas turbine unit. The use of combined cycle technology ensures better fuel utilization, helping to reduce overall emissions and lower lifecycle operating costs.

The LM2500+G4 SAC 50Hz Combined Cycle 2x1 offers higher power, improved efficiency, and a flexible design, making it well-suited for large-scale oil and gas operations that demand reliable and efficient power generation. Its “50Hz” designation means the turbine is specifically optimized to supply electricity to grids operating at 50 cycles per second, ensuring seamless integration with regional power systems.