The long-standing industry leader in liquid CO2 pump solutions
Smith Pumps has been manufacturing liquid carbon dioxide (CO2) pumps for several decades, helping customers move CO2 safely and reliably in real-world operating environments. Our pumps handle flow rates from 2.5 to 250 GPM (9 to 946 LPM) and are used in applications such as bulk transfer, truck loading and offloading, ISO containers, and CO2 recirculation systems. Such recirculation systems include fire suppression, analyzers, refrigeration, and process applications to name a few.
Built to perform in low-temperature conditions from -40°F to +15°F (-40°C to -9°C), and rated for 500 psi (34 bar) maximum working pressure with 50 psi (4 bar) differential pressure, Smith Pumps delivers dependable performance where precision and reliability matter most.
Applications
- High-volume Bulk Transfer
- Ground Pumps
- Truck Delivery
- ISO Containers
- Recirculation Systems
Performance Specifications
Rated Flow Capacity:
2.5 to 250 GPM (9.5 to 946 LPM)
Temperature Range:
-40°F to +15°F (-40°C to +9°C)*
Maximum Allowable Working Pressure:
500 psi (34 bar)*
Maximum Differential Pressure:
50 psi (3.5 bar)*
Duty Cycle:
2 hours continuously at maximum RPM. For pumps operating for more than 2 hours, we recommend our heavy-duty “NSSA” option and operating the pump at ½ the maximum drive speed. Please contact our factory for the recommended pump model/motor combination.
*Contact our engineering department if your application requires a different temperature or pressure than listed above.
**All pumps are built for their intended liquid service and cannot be interchanged due to differences in materials of construction. Never use a pump for a liquid service other than specified.
100% Tested Before Shipment
Smith’s proprietary mechanical shaft seal assembly allows every seal to be pre-assembled and factory-tested prior to shipment, whether for a new pump or as a spare. The result is faster installation, reduced downtime, and dependable sealing performance you can trust. Learn more about Smith’s mechanical shaft seal design.




