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 Aerospace qualified in defense applications
Single-stage metering for fast response
Compensates for variations in inlet & outlet pressure
Continuous-duty proportional Servoid™ driver
Each unit is tested under high, low and ambient temperatures
Configured specifically to the requirements of each system
Porting, manifold, and mounting flexibility
The Proportional Air Control Valve is comprised of three primary components, the Servoid Driver, a Proportional Metering Valve and the Delta-P Regulator. |
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The Servoid Driver, is a current-driven, proportional DC solenoid which responds to either analog or digital (1 kHz pulse width modulated) signals. Input current (0 to 500 mA) is translated into a specific displacement with infinite resolution. The displacement is applied to a precision metering spool with resulting flow control. Servoid drivers also include suspended armature construction with no sliding elements. This provides low hysteresis and long component life. |
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The Proportional Air Control Valve is comprised of three primary components, the Servoid -Driver, a Proportional Metering Valve and the Delta-P Regulator. |
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The Servoid Driver, is a current-driven, proportional DC solenoid which responds to either analog or digital (1 kHz pulse width modulated) signals. Input current (0 to 500 mA) is translated into a specific displacement with infinite resolution. The displacement is applied to a precision metering spool with resulting flow control. Servoid drivers also include suspended armature construction with no sliding elements. This provides low hysteresis and long component life. |
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The Proportional Metering Valve is a proprietary, pressure balanced configuration providing extremely high flow capacity in a single stage. |
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The Delta-P Regulator is a pressure reducing, differential pressure regulator that maintains a constant pressure differential across the metering orifice. This pressure differential insures a constant net flow even while supply and downstream pressures vary, as is common with turbine engines.
This valve and a corresponding fuel metering valve control the flow and ratio of air & fuel to airborne turbine auxiliary power units (Reference PV-213). These systems include complex feedback to account for a wide range of startup parameters. Servoid valves also function well in under open-loop conditions with high repeatability. This valve can be used anywhere highly repeatable flow control of gaseous media is a requirement and similar valves are also available for control of liquids such as other fuels, coolant, and solvents. |
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The Proportional Metering Valve is a proprietary, pressure balanced configuration providing extremely high flow capacity in a single stage. |
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The Delta-P Regulator is a pressure reducing, differential pressure regulator that maintains a constant pressure differential across the metering orifice. This pressure differential insures a constant net flow even while supply and downstream pressures vary, as is common with turbine engines. |
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This valve and a corresponding fuel metering valve control the flow and ratio of air & fuel to airborne turbine auxiliary power units. These systems include complex feedback to account for a wide range of startup parameters. Servoid valves also function well in under open-loop conditions with high repeatability. This valve can be used anywhere highly repeatable flow control of gaseous media is a requirement and similar valves are also available for control of liquids such as other fuels, coolant, and solvents.
See the link below for additional information: |
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| Tech Data Bulletin - Proportional Air Control Valve (PDF) |
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