FCC catalyst & flue gas valve applications
Catalyst circulation and hot flue-gas duties require different valve functions within the same FCC unit.
The application
Fluid catalytic cracking uses valves in catalyst circulation and withdrawal, pressure management and flue-gas systems. Hot, abrasive catalyst and demanding operating sequences make the exact valve location essential to a useful enquiry.
What makes the duty demanding
- Erosion from entrained catalyst
- Heat exposure and component movement
- Actuation or positioning problems
Selection focus
Separate modulating catalyst control from shut-off duties. Review the appropriate valve architecture, erosion protection and actuation for the stated location.
Technical background
IMI Remosa — FCC and severe-service applications ↗Process background summarised from these primary references. References do not imply affiliation or qualification of a VFLV product.
Related application guides

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Hydrogen-rich processing and catalyst handling place containment and the complete operating envelope at the centre of selection.
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