Oberdorfer 6179 Bronze Impeller — OEM Replacement for the 119MP Centrifugal Pump
The Oberdorfer 6179 is the factory-specified bronze impeller designed as a direct replacement for the 119MP centrifugal pump. If your 119MP is due for routine service or showing reduced flow performance, this is the part you reach for — no guesswork, no adaptation needed. It is machined to fit precisely within the 119MP pump housing, ensuring the same quiet, efficient pumping action the Oberdorfer 119 series has always been known for.
The 119MP pump operates by drawing liquid into the center of the impeller and throwing it outward radially through centrifugal force. Because the impeller doesn't contact other pump components during normal operation, wear is manageable and scheduled replacement is straightforward. The bronze construction of the 6179 impeller makes it well-suited for a broad range of liquids — generally compatible with fluids in the pH range of 4 to 11 — and stands up well to the demands of continuous-duty fluid handling. Whether your 119MP is direct-driven at 3,450 RPM or running at the lower 1,725 RPM speed, this impeller is engineered to perform across both operating conditions.
Key Features:
- OEM Oberdorfer part number 6179, designed exclusively for the 119MP centrifugal pump
- Bronze construction for corrosion resistance across a wide range of compatible liquids
- Single rotating metal impeller design — no contact with other pump parts during operation
- Supports quiet and efficient pumping action without risk of motor overload on closed discharge
- Compatible with 119MP operating speeds of 3,450 RPM and 1,725 RPM
- No relief valve required due to the non-positive flow design
- Suitable for liquids in the pH range of 4 to 11
- Maximum operating temperature up to 212°F (standard seals); higher temperatures possible with fluoroelastomer seals
- Direct replacement to restore original pump performance and flow rate
Applications:
- General industrial fluid transfer and circulation
- Chemical handling (within compatible pH and chemical limits)
- Agricultural liquid transfer systems
- Liquid handling in OEM equipment and process machinery
- Cooling and circulation systems in industrial and commercial settings
- Water transfer, light chemical service, and similar centrifugal pump applications
Specifications:
- Part Number: 6179
- Compatible Pump Model: Oberdorfer 119MP
- Pump Type: Centrifugal (single impeller, non-positive displacement)
- Impeller Material: Bronze
- Maximum Flow Rate (119MP pump): Up to 90 GPM
- Compatible Operating Speeds: 3,450 RPM and 1,725 RPM (direct drive); variable intermediate speeds (pulley drive)
- Liquid pH Compatibility: 4 to 11
- Maximum Operating Temperature: 212°F (standard seals)
- Inlet Port Size (119MP): 1-1/4" | Outlet Port Size (119MP): 1"
- Seal Type (119MP): Carbon and ceramic mechanical rotary face seal
Frequently Asked Questions
Q: Is the Oberdorfer 6179 impeller a genuine OEM part or an aftermarket substitute?
The 6179 is a genuine Oberdorfer OEM impeller specified for the 119MP centrifugal pump. It is manufactured to the original factory tolerances and is not an aftermarket approximation.
Q: Can the 6179 bronze impeller be used in a 119MP pump driven by a pulley rather than a direct-drive motor?
Yes. The 119MP pump supports pulley drive at variable intermediate speeds in addition to the standard 3,450 and 1,725 RPM direct-drive configurations. The 6179 impeller functions correctly in all supported drive arrangements.
Q: What types of liquids are compatible with the 6179 bronze impeller?
The bronze construction makes this impeller suitable for most common liquids with a pH range of 4 to 11, including water, mild chemicals, and similar fluids. Severe solvents and acids outside this range are not recommended.
Q: Will replacing the impeller alone restore my 119MP pump to original flow performance?
In most routine service situations, yes — replacing a worn impeller with the OEM 6179 restores the pump's original flow rate and efficiency. If there are other worn components such as the seal or housing, those should be inspected and addressed at the same time.
Q: Does the 119MP require the discharge line to be kept open, or can it be throttled when using this impeller?
The 119MP is a centrifugal pump, which means its discharge line can be fully throttled or shut off without danger of overloading the motor or bursting lines — and no relief valve is required. Flow can be conveniently controlled using a throttling valve on the discharge side.
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