High Temperature Molten Salt Pump
High Temperature Molten Salt Pumps VS1, VS4, VS4+, VS5
Engineered for molten salt circulation, thermal energy storage and high-temperature heat transfer systems. Operating temperatures up to 850°C with reliable long-term performance.
Product Overview
Product Overview
What Is a Molten Salt Pump?
Molten salt pumps are specialized high-temperature centrifugal pumps designed to transport molten nitrate salts, chloride salts, fluoride salts and other liquid heat-transfer media operating at temperatures far beyond the limits of conventional chemical process pumps.
Unlike standard process pumps, molten salt pumps must withstand extreme temperatures, thermal expansion, crystallization risks and corrosive operating environments while maintaining stable long-term operation.
FEIYUE molten salt pumps are engineered for continuous service in thermal energy storage systems, concentrated solar power plants, nuclear power facilities and chemical processing industries. Explore our full high temperature pump range for related hot oil and thermal fluid solutions.
Why Molten Salt Requires Special Pump Design
Extreme Temperature Resistance
Operating temperatures up to 850°C.
Thermal Expansion Control
Special structural design minimizes deformation under severe thermal cycling.
Anti-Crystallization Design
Optimized flow passages reduce salt solidification risks.
Long-Term Reliability
Designed for continuous industrial operation in demanding environments.
Patented High-Temperature Technology
FEIYUE molten salt pumps incorporate patented dynamic-pressure liquid-film support technology, deformation coordination technology and torque balance analysis to ensure stable rotor operation under extreme temperatures.
A proprietary NH-8 self-lubricating wear-resistant alloy bearing system developed in cooperation with research institutions enhances durability and service life.
The secondary convection cooling structure and optimized heat-resistance design further improve reliability and energy efficiency.
Pump Series
Available Configurations
FEIYUE offers VS1, VS4, VS4+ and VS5 molten salt pump configurations for large-flow circulation, medium-duty suspended service and specialized vertical turbine applications. See typical industry applications below.
VS1 Molten Salt Pump
Vertical long-shaft pump designed for large flow rates and demanding heat-transfer systems.
VS4 Molten Salt Pump
Vertical suspended pump suitable for medium flow and medium head molten salt applications.
VS4+ Molten Salt Pump
Enhanced VS4 design with improved reliability for severe operating conditions.
VS5 Molten Salt Pump
Heavy-duty vertical turbine configuration for specialized molten salt circulation systems.
Applications
Typical Applications
FEIYUE molten salt pumps support critical circulation duties across energy storage, power generation and high-temperature chemical process industries worldwide. See also solar thermal applications.
Concentrated Solar Power (CSP)
Thermal Energy Storage Systems
Nuclear Power Plants
Chlor-Alkali Industry
Chemical Processing Plants
Alumina Production
Fluorochemical Industry
Organic Chemical Processing
Media Handled
Our molten salt pumps are suitable for a wide range of high-temperature heat-transfer media. For lower-temperature thermal oil duties, see our high temperature pump solutions:
- Binary molten salts
- Ternary molten salts
- Fluoride salts
- Carbonate salts
- Molten magnesium slag
- Potassium hydroxide
- Molten sulfur
- Lead-bismuth alloys
- High-temperature nano oils
Why Choose FEIYUE
Why Choose FEIYUE Molten Salt Pumps
Since the 1970s
Decades of molten salt pump engineering experience supporting CSP, thermal storage and high-temperature industrial projects worldwide.
Up to 850°C
Proven high-temperature capability for molten salt circulation with advanced cooling and bearing protection systems.
API-Based Engineering
Vertical pump designs developed with API petrochemical pump engineering principles for demanding process reliability and long-term service.
Complete Molten Salt System Solutions
FEIYUE delivers more than pumps ?? we also supply molten salt tanks, heaters, valves and control systems for integrated high-temperature circulation projects.
FAQ
Frequently Asked Questions About Molten Salt Pumps
What Is a Molten Salt Pump?
A molten salt pump is a specialized high-temperature centrifugal pump designed to transport molten nitrate salts, chloride salts, fluoride salts and other liquid heat-transfer media at temperatures far beyond the limits of conventional chemical pumps.
What Temperature Can a Molten Salt Pump Handle?
FEIYUE molten salt pumps are engineered for operating temperatures up to 850°C, depending on the salt type, pump configuration and material selection.
What Is the Difference Between VS1 and VS4 Pumps?
VS1 is a vertical long-shaft molten salt pump designed for large flow rates and demanding heat-transfer systems. VS4 is a vertical suspended pump suitable for medium flow and medium head molten salt applications. VS4+ offers enhanced reliability for severe conditions, while VS5 provides a heavy-duty vertical turbine configuration.
What Industries Use Molten Salt Pumps?
Molten salt pumps are widely used in concentrated solar power plants, thermal energy storage systems, nuclear power facilities, chlor-alkali industry, chemical processing plants, alumina production, fluorochemical industry and organic chemical processing.
Can Molten Salt Pumps Handle Fluoride Salts?
Yes. FEIYUE molten salt pumps can handle binary and ternary molten salts, fluoride salts, carbonate salts and other high-temperature heat-transfer media with appropriate material and structural design.
Why Are Molten Salt Pumps Usually Vertical?
Vertical molten salt pumps allow the impeller and hydraulic components to operate submerged in the molten salt bath, reducing shaft sealing challenges, improving thermal management and enabling stable long-shaft operation in deep tanks.
What Materials Are Used in Molten Salt Pumps?
Molten salt pumps use high-temperature alloys, specialized shaft and casing materials, and FEIYUE's proprietary NH-8 self-lubricating wear-resistant alloy bearing system developed in cooperation with research institutions for extreme-temperature service.
How Do I Select a Molten Salt Pump?
Selection depends on molten salt type, operating temperature, flow rate, head, tank depth and system configuration. Tell us your project requirements and our engineers will recommend the most suitable VS1, VS4, VS4+ or VS5 solution. Browse our available configurations or contact us for support.
Other Products
Related High Temperature & Process Pumps
Explore additional FEIYUE pumps for thermal oil circulation, extreme high-temperature duties and API 610 process applications.
High Temperature Oil Pump OH2
API 610 OH2 thermal oil pump for industrial heating systems up to 450°C.
BB5 High Temperature Multistage Pump
High-pressure multistage pump for extreme high-temperature and high-pressure industrial services.
.webp)
High Pressure Rotary Jet Pump (OH2)
API 610 OH2 process pump for petrochemical and refinery high-pressure circulation duties.
All High Temperature Pumps
Browse molten salt pumps, hot oil circulation pumps and BB5 multistage solutions for industrial heat transfer systems.
Project Support
Discuss Your Molten Salt Pump Project
Tell us your molten salt type, operating temperature, flow rate and head requirements. Our engineers will recommend the most suitable VS1, VS4, VS4+ or VS5 solution for your application. Browse all high temperature pumps, all FEIYUE products or request a quote.