FCCU Slide Valves
FCCU Slide Valves are precision-engineered for flow control in fluid catalytic cracking units. These valves manage the movement of catalyst and flue gas within the system; regulating temperature, pressure, and circulation between the reactor, regenerator, and associated vessels.
Regenerated Catalyst Slide Valve

- Manages the flow of regenerated catalyst into the riser and reactor.
- Controls catalyst feed rate to optimize reaction conditions.
- Enables precise temperature control in the reactor.
- Enhances operational efficiency and catalyst utilization.
Spent Catalyst Slide Valve

- Controls the flow of spent catalyst from the reactor to the regenerator.
- Helps regulate reactor temperature and catalyst circulation rates.
- Prevents catalyst backflow, protecting equipment integrity.
- Improves system stability and overall process efficiency.
Double Disc Flue Gas Slide Valve

- Maintains pressure balance between the regenerator and reactor.
- Allows controlled venting of regenerator vessel gases.
- Designed for durability in high-temperature, high-pressure environments.
Additional FCCU Slide Valves
- Recirculation Catalyst Slide Valve
- Critical for maintaining a stable catalyst circulation rate in the FCC unit.
- Controls catalyst circulation to manage combustor temperature and density.
- Catalyst Cooler Slide Valve
- Regulates the flow of catalyst into the cooler to manage heat removal.
- Enables precise temperature control in the regenerator, especially with high coke yield feeds.
- Provides operational flexibility by allowing adjustments based on feedstock and process demands.
Our Solutions
Our Slide Valves improve process efficiency, safety and reliability. Many of our slide valve innovations remain exclusive to TapcoEnpro and are protected under U.S. and foreign patents. Most of our valve designs help set industry standards.
Hot Stub Design

In 1990 we addressed the industry-wide problem of seat plate warping with our Hot Stub Design which has become the standard in designs.
Boltless Slide Valve

In 1998, TapcoEnpro introduced the Bolt-Less Slide Valve™ design to solve a maintenance issue that had troubled refiners for decades. See More
Industry Challenges We Solved
1976 – First High Differential FCC Slide Valve
1982 – Internals Removable Through Bonnet
1984 – Tight Shut Off Catalyst Slide Valve
1989 – Plug Valve Backflow Check Valve
1996 – Plug Valve Body Purge Protection
1999 – Offset Flue Gas Butterfly Valve
2000 – Static Purge Stuffing Box
2000 – Bolt-Less Slide Valve
2003 – Tight Shut Off High Temp Slide Valve
Nothing makes better sense than to trust your assets to the original inventors of the world’s most respected valve and control system…TapcoEnpro