Orton Valve Replacement in PDH Unit (560°C)

1. Project Background

The client is a petrochemical company operating a propane dehydrogenation (PDH) unit for polypropylene production.

The system originally used a 42” Class 300 LB triple-offset butterfly valve from Orton, handling high-temperature media at approximately 560°C.

2. Challenges

• Extreme temperature causing sealing instability

• High wear rate under continuous operation

• High maintenance cost

• Limited lifecycle under severe service conditions

3. Our Solution

Procetek provided a customized Penta-offset butterfly valve solution:

• Designed for 560°C high-temperature operation 

• Improved sealing geometry and reduced friction

• Fully compatible with existing system structure

• Enhanced lifecycle performance

4. Scope of Supply

• Penta-offset butterfly valve

• Replacement for Orton 42” Class 300 LB valve

• Procetek Model: D645Y-300LB 42”

Equivalent / Reference Model Mapping

Original Model	Procetek Replacement
Orton 42” 300LB	D645Y-300LB 42”

5. Implementation

• On-site parameter verification

• Customized production and pre-testing

• Installation during shutdown window

• Commissioning under real operating conditions

6. Results

• Improved sealing performance under extreme temperature

• Reduced maintenance frequency

• Extended service life

• Increased system reliability

7. Why It Worked

• Strong high-temperature application expertise

• Advanced sealing design (Penta-offset)

• Reliable compatibility with existing system

8. Conclusion

The project demonstrates effective replacement of international brand valves in high-temperature petrochemical applications.

9. Call to Action

Contact us for high-temperature valve replacement solutions in petrochemical systems.