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Woodward L-Series Trim Valves

The L-Series trim valves provides a flexible control solution for applications including air/fuel (A/F) ratio control, pressure control and certain other process or position control functions. It provides a suitable replacement for mechanical systems that need more flexibility in control strategy. The L-Series trim valves are designed for industrial applications ranging from generators and mechanical drives to pumps and compressors.

The Woodward L-Series Trim valves come in 16 and 22 mm and combine the L-Series electric actuator with integrated control software to function as:

  • Air/fuel ratio controller of a gaseous-fueled engine
  • Full-authority air/fuel ratio controller (control of differential pressure)
  • General purpose process controller (pressure, flow, temperature, load, or level)
  • Positioner

The L-Series has a microprocessor-based controller incorporated into the actuator, creating a single integrated package. For models with process control logic, this eliminates the need for an additional driver box and A/F ratio control box. Models with posiotion control logic can be used with a A/F control box.

Apart from the hardware variant of the Woodward L-series, the L-series A/F controls comes in two variants in terms of control logic:

  • Position Control (accepting a PWM or 0-5 V position command)
  • Process Control (accepting a process signal, e.g. O2 or pressure)
PDF Specsheet

L-series

1680-6005

1.00

16 – 50mm

3051-073

1.00

16 – 50mm

8404-3001

1.00

16 – 50mm

8404-3002

1.00

16 – 50mm

8404-3003

1.00

16 – 50mm

8404-3004

1.00

16 – 50mm

8404-7301

1.00

16 – 50mm

8404-7302

1.00

16 – 50mm

8404-7303

1.00

16 – 50mm

8404-7304

1.00