Product Description
FTI DB Series Sealless Centrifugal Pumps
The FTI DB Series consists of horizontal, flooded-suction magnetic-drive centrifugal pumps designed for corrosive chemical transfer and circulation. Therefore, the range provides dependable fluid handling without relying on a conventional mechanical shaft seal.
Finish Thompson offers models from DB3 through DB22 in polypropylene or PVDF construction. Across the complete range, published performance extends to approximately 837 lpm of flow and 61.3 metres of head.
DB Series Magnetic-Drive Pump Design
The pump uses two magnetic assemblies to transfer motor power through a solid containment barrier. Consequently, no rotating shaft passes through the process-liquid casing.
This sealless arrangement removes the mechanical seal and its associated leakage point. Moreover, it can reduce seal maintenance, chemical emissions and unplanned downtime when the pump is correctly selected.
Key Features of Finish Thompson DB Pumps
- Sealless magnetic-drive construction
- Flooded-suction centrifugal operation
- Flow range from approximately 1 to 837 lpm
- Maximum head up to 61.3 m
- Working pressure up to 6.2 bar
- Hydraulic efficiency up to 70%
- Maximum viscosity above 150 cP
- Specific-gravity capability above 1.8
- Polypropylene or PVDF construction
- Neodymium magnets on every model
- Replaceable shaft and bushing
- NEMA and IEC motor compatibility
- Horizontal or selected vertical installation
- Back pull-out maintenance design
- Five-year warranty
- CE, UKCA and EAC certification
- ATEX options
Together, these features allow the FTI DB Series to cover varied chemical duties while supporting efficient operation and simplified servicing.
Polypropylene and PVDF Chemical Pumps
Polypropylene configurations handle compatible liquids at temperatures up to approximately 82°C. Alternatively, PVDF models support temperatures up to approximately 104°C and provide different chemical-resistance properties.
Therefore, engineers can choose the construction according to the liquid concentration, temperature and compatibility requirements. However, neither thermoplastic material suits every chemical, so the complete duty must be reviewed before ordering.
Efficient Flooded-Suction Performance
The Finish Thompson DB range is designed for flooded-suction installations where liquid naturally flows towards the pump inlet.
Consequently, the pump casing remains supplied with liquid during normal operation. Moreover, the hydraulic design provides operating efficiency up to 70%, helping reduce unnecessary motor power and lifecycle energy costs.
The selected pump should operate close to its best efficiency region. Therefore, users must compare the system curve with the model-specific performance curve instead of selecting only by port size.
Run-Dry Capability with Carbon Bushings
Suitable DB pumps can run dry for extended periods when equipped with a carbon bushing. Consequently, the pump may tolerate certain temporary loss-of-liquid events better than configurations that depend entirely on process-liquid lubrication.
However, run-dry capability does not remove the need for correct monitoring and operating procedures. Therefore, facilities should still avoid unnecessary dry running and confirm the selected internal materials.
DB Pump Models and Hydraulic Coverage
The FTI DB Series includes:
- DB3
- DB4
- DB5
- DB5.5
- DB6
- DB6H
- DB7
- DB8
- DB9
- DB10
- DB11
- DB15
- DB22
Smaller models suit moderate circulation and transfer duties. Meanwhile, larger models provide substantially greater capacity. For example, the DB7 reaches approximately 15.8 m³/h at 2,900 RPM, whereas the complete range extends to approximately 50.2 m³/h or 837 lpm.
Connection and Motor Configurations
Depending on the model, process connections include:
- NPT threaded
- BSP threaded
- Flanged
- Union connections
Moreover, the close-coupled design mounts to compatible NEMA or IEC motor frames. The Easy Set outer-drive system also allows installation without dismantling the pump assembly. Consequently, commissioning and future motor servicing can be more straightforward.
Back Pull-Out Pump Maintenance
The FTI DB Series uses a back pull-out arrangement that provides access to the pump internals without unnecessarily disturbing the casing or connected pipework.
In addition, replaceable shafts and bushings allow technicians to renew principal wear components rather than replacing the complete pump. As a result, planned maintenance can require less downtime and lower spare-parts expenditure.
UAE Applications for DB Series Pumps
Finish Thompson DB pumps may support:
- Chemical processing
- Electroplating and anodising
- Water and wastewater treatment
- Pulp and paper operations
- Heat-exchanger circulation
- Circuit-board manufacturing
- Metal finishing
- Industrial scrubber systems
- Acid and base transfer
- Chemical dosing-system circulation
- General industrial processing
For example, DB and SP pumps are designed for corrosive liquids used in electroplating and anodising facilities. Similarly, the DB7 is officially identified for chemical processing, heat exchangers, pulp and paper, and circuit-board printing.
Selecting an FTI DB Series Pump
Correct selection depends on:
- Required flow and total head
- Chemical name and concentration
- Liquid temperature
- Viscosity and specific gravity
- Available NPSH
- Construction material
- Shaft and bushing materials
- Connection standard
- Motor voltage and frequency
- Hazardous-area requirements
Therefore, users should configure the FTI DB Series around the complete hydraulic and chemical duty. Otherwise, incompatible materials, inadequate inlet conditions or an incorrect operating point may reduce performance and component life.
Why Choose Finish Thompson DB Pumps?
Finish Thompson DB pumps combine sealless containment, corrosion-resistant thermoplastics and efficient magnetic-drive operation. Moreover, the broad model range supports both smaller chemical systems and higher-capacity industrial duties.
As a result, the FTI DB Series provides a practical solution for UAE facilities requiring reliable, low-maintenance and leak-resistant chemical transfer.
Request an FTI DB Pump in the UAE
Contact our pump specialists for technical selection, specifications and UAE pricing.
Please provide the chemical, concentration, temperature, flow, total head, specific gravity and connection requirements. Consequently, our team can recommend the correct DB model, material and motor configuration.