Finish Thompson DB3-5.5 Series Sealless Mag Drive Pump

The DB Series

The DB Series magnetic drive pump is the new standard for hydraulic efficiency and corrosive fluid handling.

With design-aided magnetic flux and computational fluid dynamics technology, the DB Series packs all the high-pressure, fluid-handling punch you would expect from a Finish Thompson pump.

Born from painstaking, extensive R & D effort, the efficiency of the DB Series lowers energy consumption and operating costs over the long life cycle of the pump.

Constructed from Polypropylene or PVDF, the DB Series operates durably in the most corrosive of environments. It can even run dry without damage.

This rock solid embodiment of technological advancement is superior in precision, performance and reliability to other pumps on the market.

That’s why we offer the industry’s best five-year warranty. And why everyone else is undoubtedly heading back to the drawing board.

Features :
  • Close-coupled design
  • Polypropylene or PVDF construction
  • Replaceable shaft
  • ISO 1940 G2.5 balancing
  • Mounts to NEMA and IEC motor frames
  • Mounts to motor without disassembly
  • Back pullout design
  • Five-year warranty
  • CE certified
  • ATEX available (DB only)
Applications :
  • Aquarium/Zoo
  • Chemical Processing
  • Electronics
  • Plating
Capabilities :
  • Up to 70% operating efficiency
  • High working pressure up to 90 psi
  • High specific gravity handling over 1.8*
  • Maximum viscosity 150 cP
  • Maximum Temperature Polypropylene - 180° F (82° C), PVDF - 220° F (104° C)
Industries & Applications :
  • Chemical manufacturing
  • Metal plating/working
  • Wastewater treatment
  • Fume scrubbing
  • Mining
  • Paper mills
  • Printing
  • Pharmaceutical processing
  • Agriculture
  • OEM equipment supply
  • General pump applications
Suction Port Size (in)1
Discharge Port Size (in)0.5
Connection TypesNPT, BSP
Maximum Specific GravityUp to 1.8
Flow Range (gpm) @3450 RPM0.25 to 15.3, 0.25 to 15.4, 0.25 to 15.1, 0.25 to 15.2
Flow Range (m3/h) @2900 RPM0.56 to 2.10, 0.56 to 2.11, 0.56 to 2.8, 0.56 to 2.9
Maximum Head (ft) @3450 RPM20.4
Maximum Head (m) @2900 RPM4.5
Power Range (hp) @3450 RPM0.03 to 0.3, 0.03 to 0.4, 0.03 to 0.1, 0.03 to 0.2
Power Range (kW) @2900 RPM0.02 to 0.09, 0.02 to 0.10, 0.02 to 0.07, 0.02 to 0.08
TypeSealless Mag Drive
Construction MaterialsPolypropylene, PVDF
O-ring MaterialsFKM or EPDM
Bushing MaterialsCarbon or PTFE
Maximum Working Pressure (psi)60
Maximum Working Pressure (bar)4.1
Impeller Diameter (in)2.3
Impeller Diameter (cm)5.8
Maximum Temperature (C)82, 104
Maximum Temperature (F)180, 220
Document TitleDownload
ManualClick Here to Download
DB Series BrochureClick Here to Download
Baseplates Technical FlyerClick Here to Download
DB Series CurvebookClick Here to Download
Technical FlyerClick Here to Download
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