The Woodward 8516-039 is a mechanical-hydraulic differential governor from the TG-13 series, designed for precise speed control of small steam turbines in non-synchronous (droop) operation. It features a self-contained oil supply, weatherproof construction, and a robust design that withstands harsh industrial environments with minimal maintenance requirements.
Speed Setting: Screw adjustment (standard); lever adjustment (optional)
Drive Shaft: Rotation direction reversible on cast iron and cast aluminum housings
Oil System: Self-contained, no external oil supply required
Enclosure: Weatherproof for outdoor installation
Dimensions: 16 × 16 × 12 cm
Weight: 0.8 kg
Application Scope
The TG-13 governor is ideal for small steam turbine speed regulation where isochronous (constant speed) operation is not required. It is widely used in industrial process steam systems, mechanical drive applications, and auxiliary power units where droop speed control provides stable load sharing and simplified system architecture.
Installation Guide
Mount the governor on the turbine drive shaft using the specified coupling arrangement.
Verify drive shaft rotation direction matches the turbine configuration; reverse if necessary.
Set the initial speed reference using the screw or lever adjustment mechanism.
Ensure the self-contained oil reservoir is filled with the recommended lubricant grade.
Connect the output linkage to the turbine throttle valve with minimal backlash.
Perform a no-load speed check before applying process loads.
Calibrate droop percentage to match system load-sharing requirements.
FAQ
Q: What is the difference between 8516-039 and 8516-038? A: Both belong to the TG-13 series; the 8516-039 is a specific configuration variant within the same mechanical-hydraulic governor family.
Q: Can this governor be used for isochronous operation? A: No, the TG-13 is a differential (droop) governor designed for non-synchronous applications. For isochronous control, consider electronic governor alternatives.
Q: How often does the oil need to be changed? A: With the self-contained oil system and minimal moving parts, maintenance intervals are extended; follow Woodward's recommended service schedule based on operating hours.
Q: Is the speed range field-adjustable? A: The speed range is factory-set to customer specifications (1100–2400, 2400–4000, or 4000–6000 rpm). Contact Woodward for custom range requirements.
Selection Tips
Confirm your turbine operates in droop mode; the TG-13 does not provide isochronous speed holding.
Select the speed range that covers your turbine's operating envelope with 20% margin.
Choose lever adjustment if frequent speed changes are anticipated; screw adjustment for fixed-setpoint applications.
Verify drive shaft rotation direction and mounting orientation before ordering.
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Question 2: What Is The Warranty Period?
Answer 2: We offer a standard one-year warranty for all new and original items.
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Warranty Conditions
At PLC DCS Pro Ltd., we are committed to ensuring the quality of our products. Our one-year warranty provides coverage for any defects in material or workmanship, excluding damages caused by deliberate misuse.
🛡️Coverage Details:
This warranty encompasses all instances of product malfunction or failure due to inherent manufacturing flaws, with the exception of intentional damage.
📝Claim Process:
To avail of warranty services, please notify us of any quality-related issues within the warranty period. We may conduct online troubleshooting and examination as needed.
🚚Shipping Assistance:
We understand the importance of prompt service. Therefore, we cover return shipping costs for warranty-related returns within the first month of supply. Within three months of supply, we cover one-way shipping costs for warranty-related returns. After three months, the customer is responsible for shipping costs both ways.
🚫Exclusions:
Unauthorized modifications, repairs, or misuse of the product.
