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3 year warranty


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Woodward PISC III Model 8235-351 is one of the PISC Integrated Throttle Bodies from the ProAct and ProAct Plus series. This model does not require any grooves. The 8235-351 model can be flange mounted but it is recommended that it is not due to the higher mass of the actuator and increased lever arm between the center of gravity an the center of the bore.



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  • Part Number: 8235-351
  • SKU: 8235351WO
  • Manufacturer: Woodward
  • Series: ProAct and ProAct Plus Driver and Actuator

8235-351 Technical Specifications

Absolute Max Working Pressure 8.1 BAR.A
Actuator Model PISC III
Flow Medium Max Temperature 100°C
Location of CG from Valve Bore Centerline 6.7 inches (169 mm)
Manual(s) 26246, 26265, and 25182
Model Type PISC Integrated Throttle Body
Nominal Piping Size (DN) 85
O-Rngs for Grooves on Flanges None
Weight 19.1 kg (42 lbs)

Product Description

Woodward ProAct Integrated Speed Control (PISC) Integrated Throttle Body model 8235-351 is used in conjunction with a PISC III actuator. Models with a PISC III actuator require base mounting due to its greater mass, but in some cases can be flange mounted as long as the vibration level has been assessed to ensure a low level of stress on the unit. When the unit is mounted a minimum gap of .5 millimeters is required to provide proper support between the electronics enclosure and mounting bracket.

While being operated the 8235-351 model may experience errors involving the governor. If the engine refuses to start several issues could occur which are as follows; verify that the power supply is present at the proper governor terminals, ensure that the “open for shutdown” application contact is securely closed, and make sure that the start fuel limit on the governor is not averting the proper airflow needed. When attached to the appropriate actuator the PISC model can be set up to operate as a position control, but only for the most basic actuator applications. 

When the 8235-351 and PISC actuator are connected and the power supply has been connected the actuator can be operated immediately, and power between the control and the engine can be initiated simultaneously. During an engine shutdown operation, the engine shutdown solenoid or solenoid valve within the fuel supply must be de-activated and the power supply must be disengaged from the speed control. 

If any questions arise during operation please refer to the attached manuals. Manual 26265 contains information on troubleshooting errors for the 8235-351 unit in chapter three beginning on page thirteen.

Reviews For 8235-351

Internal Review

Woodward model 8235-351 can have stability errors, if any stability errors occur begin to slowly adjust the dynamics gain potentiometer counterclockwise if the engine oscillates when cold and stabilizes when warm. If any other errors regarding the stability occur refer to page thirteen in the 26265 manual above. - AX Control Tech Team

Repair Services For 8235-351

Type Lead Time Price Action
Repair Service 1-2 weeks $960

Our highly skilled technicians can repair your 8235-351. 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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