Catalyst Withdrawal Valves
TapcoEnpro Catalyst Withdrawal Valves are engineered for controlled removal of catalyst from fluidized systems in high-temperature FCCU environments. Designed to withstand thermal shock, erosion, and high wear conditions, these valves ensure reliable catalyst flow from transfer lines, dump systems, or sampling points.
Industry Challenges to Solve
Refineries face several persistent issues with conventional catalyst withdrawal systems, including:
- Frequent valve replacement due to wear and distortion from high-temperature catalyst.
- Slumping and clogging, which compromise shutoff performance.
- Thermal shock leading to distortion and mechanical failure.
- Limited ability to throttle catalyst flow with precision.
- High risk of human error during manual valve operation.
- Excessive leakage due to poor sealing.
- High lifecycle costs from premature failure of non-replaceable valve components.
Our Solutions
- Wear-resistant hardfacing provides longer life and resists erosion from catalyst surges at up to 1300°F.
- Improved shutoff performance with a positive sealing design that eliminates slumping and clogging.
- Thermal shock-resistant construction prevents distortion, reducing the need for mid-turnaround replacements.
- Throttle and shutoff functionality allows for precise catalyst control in both manual and automated systems.
- Automation-ready actuation options reduce human error and increase safety (manual, pneumatic, electric, hydraulic).
- Replaceable internal components extend the life of the valve body and simplify maintenance between turnarounds.
- Enhanced sealing reduces leakage and improves process reliability.
- Fully fabricated from plate, bar, and forgings—no cast metals—ensuring durability under extreme service conditions
With the wear resistance hard facing, more positive shutoff and throttle control in the slide valves and the ability to replace wear-prone parts with little or no downtime, frequent catalyst valve replacement between turnarounds is eliminated.
The TapcoEnpro catalyst withdrawal valves are offered with four operating actuator systems: manual, pneumatic, hydraulic, electric, or a combination. If the customer specifies automatic actuation, a preferred method is the pneumatic or hydraulic system which ensures on/off or throttling with the push of a button.
Designed for Long-Term Serviceability
The cross-sectional design of the Catalyst Withdrawal Valve highlights its replaceable internal components; a key advantage over conventional systems. These wear-prone parts can be removed and reconditioned during scheduled turnarounds, significantly extending the life of the valve body and minimizing downtime.
Nothing makes better sense than to trust your assets to the original inventors of the world’s most respected valve and control system…TapcoEnpro