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3 year warranty


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Woodward ProAct and ProAct Plus Actuator and Driver P-Series III Model 8235-371 is an Integrated Throttle Body that has a nominal piping size of 135 mm. This model requires Parker 2-255 O-Rngs for Grooves when being mounted on the flange valve system.



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  • Part Number: 8235-371
  • SKU: 8235371WO
  • Manufacturer: Woodward
  • Series: ProAct and ProAct Plus Driver and Actuator

8235-371 Technical Specifications

Actuator Model P-Series III ITB
Flow Medium Max Temperature 85 °C
Manual 26265
Nominal Diameter 120 mm (4.7 inches)
Nominal Piping Size (DN) 135 mm
Operating Temperature Range -40 to +185 °F
Series ProAct and ProAct Plus Actuators and Drivers
Shock Qualification 40 G, 11 ms sawtooth pulse
Weight 43.4 lbs (19.7 kg)

Product Description

Woodward ProAct/ProAct Plus Actuator and Driver Model 8235-371 is a P-Series III unit. The P-Series III model does have an Integrated Throttle Body. This model was designed as a throttle valve that has an embedded actuator used to throttle air or throttle fuel/air when being used with gaseous engines. As this model was produced to directly replace traditional throttle valves it requires no linkage between the actuator and the valve itself. 

The 8235-371 model was designed to be base-mounted but in some circumstances can be flange-mounted. When the model is being flange-mounted it is required to assess the vibration level to ensure that there will only be a low level of stress on the attached component. When mounted a minimum gap of .5 mm is required, if the bracket and electronics enclosure come into contact with each other the isolation feature will be defeated and may hinder the operation of the electronic as well as the electronics operating life-span. 

During operation, the 8235-371 model should have a temperature range of -40 to 85 degrees Celsius or -40 to 185 degrees Fahrenheit. Any temperatures higher or lower than those listed will cause errors and extreme hazards. To ensure that injuries are minimized please wear protective gear to keep any injuries or possible hospitalizations from occurring. 

While the 8235-371 model has a specific manual it is very difficult to find online at this time so the best manual to use would be the Woodward 26265 manual. The 26265 manual provides information on the P-Series ITB models. The P-Series ITB models are the same as the PISC ITB models that are referred to in the 26265 manual. 

Reviews For 8235-371

Internal Review

The 8235-371 model is the only P-Series III model within the ProAct/ProAct Plus series. This model also has an Integrated Throttle Body that includes an Actuator with PWM control input rather than Integrated Speed Control. - AX Control Tech Team

Repair Services For 8235-371

Type Lead Time Price Action
Repair Service 1-2 weeks $770

Our highly skilled technicians can repair your 8235-371. All of our repairs come with a 3 Year AX Control Warranty. Please contact us for additional information about our repair process. To receive the repair pricing and lead time listed above please process your repair order via our website. The following repair options may be available upon request:

  • 48-72hr Rush Repair
  • Detailed Repair Reports
  • AX Control Certificate of Warranty

AX Control Warranty Info

All products we sell are backed by our unparalleled warranty. A warranty certificate will be provided with your order upon request.
All PLCs, HMIs, and Turbine Control Boards: 3 Years
All AC/DC and Servo Drives: 2 Years
All Motors: 1 Year
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