IMI plc
Delayed Coking Bottom Unheading
FromIMI plc
The Bottom Unheading Device is based on our well-proven Double Disc Gate Valve Technology. Its fully automated design ensures safe and reliable DCU unheading operations.
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- Two Independent Discs.
- Limited thermal distortion.
- Reduced purge steam requirement.
- Less erosion.
- True double block and purge.
- Active Mechanical Seating Force.
- Increased tightness & safety.
- Corrosion & Wear Resistant Design.
- Hard faced body and disc seats.
- Seats fully protected in open and closed position.
- Guided Carrier Frame between the discs, preventing coke fines entering the valve cavity.
- No cooling water requirements.
- Easy inspection of upper seat and disc.
- Minimal spare parts stocking.
- 100% Actuator redundancy.
- Actuator options: electrical or hydraulic.
- Safe, robust and reliable.
- Safety - Double Block and Purge - API 598 shut-off.
- Economical operation with low steam consumption.
- Reduction in fugitive emissions.
- Reliable design.
- Easy On-Deck inspection and maintenance.
- Low maintenance cost.
- Reliable and robust design.
- Cycle time reduction.