Oberdorfer 500 Dependable Bronze Pump End Built for Demanding Fluid Transfer
The Oberdorfer 500 is a pump end only (PEO) bronze centrifugal pump designed for anyone who needs a compact, reliable way to move water or light fluids without the added weight or cost of a motor already attached. Because it's built entirely from bronze, this pump resists corrosion even when exposed to salt water, mild chemicals, or continuous moisture, making it a practical choice across marine, industrial, and general fluid-handling setups. Its 3/8" inlet and outlet ports keep it compact enough for tight installations while still delivering up to 8 gallons per minute of flow.
What makes the 500 particularly appealing is its simplicity. A single rotating metal impeller pulls liquid in at the center and throws it outward using centrifugal force, so there are very few moving parts to wear out or maintain. The mechanical seal keeps things running smoothly and quietly, and since it's designed for pulley drive, it integrates easily into existing engine or motor setups rather than requiring a dedicated electric motor. Whether it's circulating coolant in an industrial process, supporting a marine air conditioning system, or handling general water transfer, the 500 offers a straightforward, low-maintenance solution.
For anyone replacing an aging pump or building out a new fluid circulation system, the Oberdorfer 500 brings decades of proven engineering to a small, efficient package. It's the kind of part that just works quietly in the background, doing its job without demanding attention.
Key Features
- All-bronze construction for strong corrosion resistance
- Single open-vane rotating metal impeller for quiet, efficient operation
- Mechanical seal for reliable, low-maintenance performance
- Pump end only (PEO) design, built for pulley drive rather than a dedicated motor
- No lubrication required
- Handles fluids with minor contaminants without issue
- Flow is easily throttled with a discharge valve, no relief valve needed
Applications
- Marine air conditioning circulation
- Bilge water and general marine fluid transfer
- Sea water recirculation systems
- Industrial coolant and process fluid transfer
- General water-based fluid handling in light industrial settings
- OEM equipment requiring a compact bronze centrifugal pump end
Specifications
- Model / Part Number: 500
- Port Size: 3/8" inlet, 3/8" outlet
- Maximum Flow Rate: 8 GPM
- Seal Type: Mechanical seal
- Maximum Temperature: 212°F
- Maximum Shaft Speed: 3,450 RPM
- Construction Material: Bronze
- Drive Type: Pulley driven, pump end only (no motor included)
Frequently Asked Questions
Q: Does the Oberdorfer 500 come with a motor included?
No, the Oberdorfer 500 is a pump end only (PEO) unit, meaning it's designed to be pulley driven rather than paired with a built-in motor.
Q: What kind of fluids can this pump handle?
It's well suited for water and similar thin fluids, including those with minor contaminants, and it performs reliably in both fresh water and salt water environments due to its bronze construction.
Q: Is this pump suitable for continuous marine use?
Yes, its all-bronze housing and mechanical seal make it a strong fit for marine applications like AC circulation, bilge transfer, and sea water recirculation.
Q: Does the pump require regular maintenance or lubrication?
No, the design requires no lubrication, and the mechanical seal is built for quiet, dependable long-term operation with minimal upkeep.
Q: Can flow be controlled without damaging the pump?
Yes, flow can be adjusted using a throttling valve on the discharge line, and since it's a centrifugal design, there's no risk of overloading the pump if the line is shut off completely.
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