The Woodward LSOV (Liquid Shutoff Valve) is a two-stage valve that provides complete fuel shutoff in 0.09 seconds or less after termination of solenoid current. Designed as a three-way valve, it rapidly shuts off liquid fuel flow while diverting inlet flow to bypass ports, preventing pressure damage to positive displacement fuel systems.
Key Features
Performance
- Complete fuel shutoff in 0.09 seconds or less
- Three-way design: diverts flow to bypass when de-energized
- Prevents pressure damage to positive displacement fuel systems
- Proof pressure: 1,800 psig (12,411 kPa)
- Burst pressure: 6,000 psig (41,370 kPa)
- Normal operating pressure up to 1,200 psig (8,274 kPa)
- Rated flow: 30,000 lb/h (13,600 kg/h)
Construction
- Anodized aluminum housing
- Hardened stainless steel internal parts
- Integral 40 µm inlet screen protects pilot valve section
- Spring-assisted closure using supply pressure
- Available in four voltage configurations
- Compatible with diesel, methanol, ethanol, Jet A, kerosene, heated crudes, and residuals
- Weight: 21.5 lb (9.8 kg)
Applications
- Gas turbine liquid fuel shutoff
- Emergency and normal turbine shutdown
- Fuel line installation between regulating valve and turbine
- Positive displacement fuel pump systems
Drake Controls Services
Drake Controls is a Woodward Authorized Distributor. We stock LSOV units and provide repair, overhaul, and field support. For repair or overhaul, submit a repair request or email service@drakecontrols.com.