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3 year warranty


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Model 8235-339 is a ProAct Integrated Speed Control Model II. The PISC II actuator models were specifically designed to be mounted on the valve flanges. This model was designed to give verified accelerated life vibration for the mounting surface of the actuator.



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  • Part Number: 8235-339
  • SKU: 8235339WO
  • Manufacturer: Woodward
  • Series: ProAct and ProAct Plus Driver and Actuator

8235-339 Technical Specifications

Absolute Max Working Pressure 5.2 BAR.A
Actuator PISC II
High Temperature Flow Range -40 to 400°F
Location of CG from Valve Bore Centerline 152 mm
Manuals 26264, 26264, and 25182
Model Type Integrated Speed Control
Nominal Piping Size (DN) 85
Operating Temperature Range -40 to 185°F
Torque Output 23 lb-in
Weight 32.2 lbs

Product Description

Woodward ProAct and ProAct Plus Integrated Speed Control (PISC) Integrated Throttle Body model 8235-339 is an electrically actuated butterfly valve that will control a variety of flow outputs. This model is designed to be used with a model II PISC actuator, the model II actuator was specifically designed to mount on the valve flange. When powering the PISC it has a voltage range of 18 to 32 VDC, and the current capacity regarding model II is 15 A. When the model has been fused please note that it should have a 15 A fast blow. 

There are a variety of different torques regarding the different PISC models. As the 8235-339 model must be used with a model II actuator the following torques and currents are what is needed for the mode to operate properly; the steady state (or continuous) torque of the PISC II model is 2.6 N.m or 23 lb-in with a transient torque of 46 lb-in. The steady-state current of the model is 6A. 

The 8235-339 unit could potentially have oscillating problems if this occurs when the engine oscillates when cold and then stabilizes when warm it is integral to ensure that the proper idle dynamics have been set. To fix this problem rotate the selected dynamics gain potentiometer if you are attempting to maintain stability rotate the pot slightly clockwise until stabilized. 

If you require more information on the 8235-339 model please refer to the following Woodward manuals; 25182, 24246, and 26265. 

Reviews For 8235-339

Internal Review

The 8235-339 model operates on a medium maximum flow temperature of up to four hundred and one degrees Fahrenheit. Regarding flow outputs refer to the attached manuals. - AX Control Tech Team

Repair Services For 8235-339

Type Lead Time Price Action
Repair Service 1-2 weeks $885

Our highly skilled technicians can repair your 8235-339. 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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