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OBERDORFER 172B-A81 Centrifugal Pump
- Volumetric Flow Rate: Absolute 75.7 L/min (20 GPM) Capacity.
- Pump Architecture: Centrifugal (Close Coupled) Bronze design.
- Impeller Specification: Precision-cast Bronze Impeller.
- Electrical Compatibility: 115V AC / 1-Phase (60Hz) configuration.
- Inlet/Outlet Interface: 3/4″ NPT / 3/4″ NPT Connections.
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Description
Oberdorfer 172B-A81 Centrifugal Pump
Engineered for high-volume engine cooling, the Oberdorfer 172B-A81 stands as the definitive fluid solution for a precision physical bridge to vessel safety. As a premier Oberdorfer marine pump, this unit utilizes a specialized A81 mounting configuration to deliver superior hydrodynamic suction for large-scale heat exchangers. The hardware architecture focuses on material durability, ensuring this Oberdorfer power system minimizes cavitation while managing high-flow output and consistent pressure transitions in professional maritime environments.
Technology-driven mechanical performance provides total protection through a non-sparking bronze housing designed for maximum safety in engine room compartments. This Oberdorfer marine pump features an industrial-grade impeller to facilitate weight balance and vibration damping during long-range coastal transits. Reliability is reinforced by the easy-to-service mechanical layout and high-capacity components designed for the 172B series. This unit is the premier choice for mariners prioritizing professional maritime power and high-velocity bronze pump integrity.
Key Technical Specifications
- Heavy duty bronze pump housing.
- A81 standard motor adapter design.
- High efficiency centrifugal power transfer.
- Precision balanced high flow impeller.
- Integrated mechanical seal protection system.
- Designed for marine engine cooling.
- High strength corrosion resistant casting.
OBERDORFER 172B-A81 - 115V Centrifugal Pump Specs
| Brand | Oberdorfer |
| Model / SKU | 172B-A81 |
| Country of Origin | USA |
| Max Flow Rate | 75.7 L/min (20 GPM / 1200 GPH) |
| Voltage / Phase | 115V AC / 1-Phase (60Hz) |
| Pump Type | Centrifugal (Close Coupled) |
| Body Material | Bronze Construction |
| Impeller Material | Bronze |
| Inlet / Outlet | 3/4" NPT / 3/4" NPT |
| Dry Weight | 12 lbs (5.4 kg) |
| Primary Application | Domestic Marine Refrigeration / A/C Cooling |








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