The Woodward LSOV25 (High Speed Liquid Fuel Shutoff Valve) is a three-way, two-stage valve designed for fail-safe fuel bypass in 0.100 seconds or less after termination of solenoid current. Loss of the electrical signal results in all fuel being diverted to the return system, protecting the turbine from overspeed. Woodward recommends installation of two shutoff valves per API 616.
Key Features
Performance
- Fuel bypass in 0.100 seconds or less
- Fail-safe design: loss of signal diverts all fuel to return system
- Three-way, two-stage valve architecture
- Prevents critical overspeed that can cause mechanical damage and personal injury
- API 616 compliant (dual valve installation recommended)
Construction
- Anodized aluminum housing
- Hardened stainless steel moving internal parts
- Integral 40 µm wash flow filter protects pilot valve section
- No filtration of normal fuel flow through valve
- Designed for continuous monitoring during turbine operation
- Must be exercised at every turbine shutdown to verify proper operation
Applications
- Gas turbine liquid fuel shutoff and safety
- Emergency fuel isolation per API 616
- Critical turbine overspeed protection
- Dual-valve safety installations
Drake Controls Services
Drake Controls is a Woodward Authorized Distributor. We stock LSOV25 units and provide repair, overhaul, and field support. For repair or overhaul, submit a repair request or email service@drakecontrols.com.