Woodward TecJet™ Fuel Metering Valves

    Intelligent electronic gas metering valves for lower engine emissions

    Woodward’s TecJet™ valve is an electronic gas metering valve for single-point injection. Its integrated sensors and electronics provide the correct gas flow under all specified conditions, enabling the engine to run very lean with low emissions. TecJet’s ability to be used with a wide range of gas qualities—from methane to landfill gas to coal gas—places it among the most flexible and accurate gas metering devices on the market 

    How TecJet Works

    Typically, a separate engine control system calculates the desired gas flow from various engine and gas parameters. This desired gas flow is transmitted through a CAN link to the TecJet valve. The TecJet valve ensures that the desired gas mass flow is attained, automatically compensating for changes in gas pressure and gas temperature.

    The microcomputer inside the TecJet valve converts the desired gas flow signal and gas parameter information into a valve position (which corresponds to the desired gas mass flow), depending on gas inlet pressure, gas temperature, and the pressure difference across the valve.

    The TecJet family of valves is comprised of four sizes ranging from 50mm to105mm. 


    TecJet 52 Gen II’s improved dynamic response and repeatability over previous TecJet models make transitioning to the Gen II a logical decision.

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    50mm ball valve combined with ProAct actuator

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    52mm butterfly valve combined with F-Series actuator

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    85mm butterfly valve combined with ProAct actuator

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    105mm butterfly valve combined with ProAct actuator

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    • Forms ideal combination with any Woodward Full-Authority control
    • Bi-directional communication via CANbus: CAN J1939, CANopen, or custom CAN
    • Integrated sensors and electronics
    • Microprocessor based mass gas flow control
    • Accurate over entire flow range
    • Fast response to flow commands
    • Flow testing ensures that the engine does not have to be recalibrated if TecJet is replaced
    • Compensates for gas pressure and gas temperature fluctuations
    • Requires only analog or digital desired gas flow signal and supply voltage
       (CAN communication recommended)
    • Can be supported by flanges 

    Woodward TecJet valves, together with an engine control system, form an ideal combination for operating gas engines with a gas specific gravity from 0.4 to 2.0.

    The chart below shows appropriate stationary applications of each size TecJet. Note that these ranges are dependent on other factors such as fuel pressure, fuel differential pressure across the valve, fuel temperature, etc. 

    TecJet Model

    Low-BTU Specialty Gas

    Pipeline Quality Gas

    TecJet 50 Plus Precision Flow

    50 to 250 kW

    Not Applicable

    TecJet 52

    500 to 1500 kW

    210 to 800 kW

    TecJet 85

    1000 to 2300 kW

    450 to 1500 kW

    TecJet 110

    1300 to 3000 kW

    650 to 2000 kW

    Engine power ranges are for reference only. Actual engine output power depends on the heating value of the gaseous fuel being used.