Description
Sulzer Centrifugal Nuclear Safety Pumps ZFn horizontal volute type process pump range -First choice for nuclear safety solutions
Key Technical Specifications:
| Capacities | Up to 2,600 m3/h / 11,440 US gpm |
| Heads | Up to 300 m / 1,000 ft |
| Pressures | Up to 100 bar / 1,450 psi |
| Temperatures | Up to 425°C / 800°F |
Why Choose Sulzer ZFn Process Pump?
The Sulzer ZFn is a horizontal , volute-type , single-stage centrifugal pump designed specifically for nuclear safety-related applications. Developed to comply with the most stringent nuclear codes , the ZFn series offers robust , long-term reliability under the harshest operating conditions. Its proven design ensures high availability in critical nuclear systems such as cooling , injection , or feedwater circuits where safety and uptime are non-negotiable.
Key Technical Specifications
Pump Type: Horizontal , single-stage , end-suction centrifugal pump with volute casing
Design Standards: ASME Section III (Class 1/2/3) , RCC-M , 10 CFR 50 Appendix B , KTA , IEEE 323/344
Materials of Construction:
– Casing: Carbon steel , stainless steel , or low-alloy steel
– Impeller: Fully enclosed or semi-open stainless steel impeller
– Shaft: Nuclear-grade stainless or alloy steel
Bearings: Anti-friction or sleeve bearings per duty and configuration
Sealing Options: Gland packing or engineered mechanical seals certified for nuclear service
Design & Functionality
End-suction , top-discharge configuration for compact layout and ease of piping
Centerline-mounted casing for high thermal stability during transients
Back pull-out design allows for simplified maintenance without disturbing piping
Optimized volute and impeller geometry for high hydraulic efficiency and NPSH performance
Designed for seismic and LOCA conditions typical in nuclear plant operation
Typical Applications
Reactor Component Cooling Water (RCCW) Systems
Safety Injection Systems
Emergency Core Cooling (ECC) Systems
Chemical and Volume Control Systems
Nuclear auxiliary process loops in both PWR and BWR facilities
Additional Features
Designed for continuous operation in safety-related systems
Low vibration, low noise design to extend life of rotating elements
Modular construction enables easy customization per plant specification
Full traceability of nuclear-grade materials and processes
Qualification available to IEEE , RCC-E , KTA , and other nuclear authority standards
