Woodward 8915-151

Digital guide

Possible Family Association: Based on Woodward 8915-series numbering conventions, part numbers in the 8915-1xx range are associated with the control valve and actuator families. 8915-151 likely belongs to one of the following Woodward families:

3103 Gas Valve with TM55P electro-hydraulic actuator

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1907 Liquid Fuel Valve with TM55P actuator
3151A Water Valve with TM40LP actuator

Verified 3103/TM55P Family Baseline (most probable association):

Valve Construction: Stainless steel body, through-hardened stainless steel internals
Rotary sleeve and gate-type metering structure with self-cleaning capability
Inlet guide tube directs contaminants through metering port
TM-55P Actuator: Anodized aluminum housing; through-hardened stainless steel internals
40 µm filter fitting on hydraulic supply inlet
Internal mechanical feedback; optional RVDT position transducer (±0.16°)
Flow Range: 23 to 18,144 kg/h (50 to 40,000 lb/h)
Inlet Pressure: 6,206 kPa (900 psia) maximum; 4,964 kPa (720 psia) CE limit
Differential Pressure: 172 to 6,206 kPa (25 to 900 psi)
Gas Temperature: -40°C to +149°C
Metered Fuels: Natural gas, propane, methane; specific gravity 0.5–1.05
Flow Accuracy: ±5% of point or ±0.25% of maximum flow; ±2% at stops
Hydraulic Supply: 400 to 1,000 psig external supply oil

Working Principle: Electronic control current drives the dry-coil torque motor servo valve, controlling hydraulic oil to a double-acting servo piston. The piston rotates the valve output shaft, driving the 3103 metering sleeve to change opening. Internal mechanical feedback re-centers the servo valve for precise proportional control. On hydraulic or power loss, the spring biases the valve to minimum fuel position.

Application: Industrial gas turbine fuel metering and control; steam turbine liquid fuel control; water injection control for turbines.

Installation & Precautions: Maintain hydraulic oil cleanliness to ISO 4406 20/18/15; install 10 µm filtration; follow valve body flow direction markings; independent piping support; gas filter upstream meeting particle requirements; regular inspection of hydraulic oil condition; avoid over-pressure/over-temperature operation; return to factory for overhaul at end of service life.

Note: The exact product type, port configuration, actuator type, and certification of 8915-151 require Woodward factory confirmation with the serial number. The 8915-1xx range in Woodward’s catalog spans 3103 gas valves, 1907 liquid fuel valves, and 3151A water valves with various actuator pairings (TM55P, TM40LP, EM35). The above represents the most probable family association based on numbering conventions, not a verified specification for 8915-151.