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Coking Isolation Valve
Brand: ValvTechnologiesThe delayed Coker process is a batch process, one of the most hostile environments in the refinery – due to the abrasive and erosive fouling properties of the coke by-product.
The valves also experience extreme thermal cycling.
Valves are cycled frequently and failure can lead to a complete shutdown of a unit, resulting in large process and financial costs.
Improve up-time, avoid unscheduled downtime and lost production with ValvTechnologies’ coking solution.
Features- Reliability and longevity
- Operational and personal safety – reliability of tight isolation
- Most effective technological purging systems to prevent locking or coking up
- Low cost-of-ownership due to excellent run time and low-cost of repair
- Integral seat design
- Zero to ANSI class VI shutoff
- Mechanical (Belleville Spring) ball to seat loading
- Fire safe per API 607 6th edition
- Single steam connection point option
- Separate ball and stem to prevent packing leaks through daily temperature cycles
- Low steam purge consumption
- The sealing surfaces are overlaid with tungsten or chromium carbide cermets using our exclusive HVOF RiTech® process
- Continuous steam purging/flushing to eliminating coke buildup in between shutdown intervals
- Low steam purge consumption
- Full bore design
- Bi-directional design available for special services
- Live-loaded fugitive emission stem packing
- Robust, true severe service design, with fewer parts – only eight mechanical components in valve design
Specifications
Brand
End Connections
- End Connections: Flanged
Materials of Construction
- For Heater Isolation Valves: A217 Grade C12, Incoloy 800 H, 317SS
- Standard Materials: For SP Valves: A217 Grade C12, A217 Grade C5
Pressure Classes
- ASME /ANSI Class 300-2500
Shutoff
- Absolute Zero-Leakage Shutoff
Sizes
- 1 to 36”