OBERDORFER 214M-F35 Flexible Impeller Pump

OBERDORFER 214M-F35 Flexible Impeller Pump

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OBERDORFER 214M-F35 Flexible Impeller Pump

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Oberdorfer - 214M-F35 Flexible Impeller Pump. Pipe Size In 1 1/2" Out 3/8" and  3/4" Garden Hose - 1/3 HP TEFC - 3450 RPM - 12.5 GPM @ 2 psi - Lip Seal Type - 22 lbs Weight. All bronze construction. Large vent openings separate pump and motor. Motor shaft slinger protects motor bearings. Macerator wheel and impeller easily replaced. Stainless Steel motor shaft.

Part Number: 214M
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OB 214M-F35


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Oberdorfer - 214M-F35 Flexible Impeller Pump - 1/3 HP - 3450 rpm - 115 V - 12.5 GPM @ 2 psi - 22 lbs weight - Lip Seal


This all bronze flexible impeller pump is used for sewage transfer from toilets to holding tanks and for pump-out and disposal from holding tanks. It’s solid, corrosive resistant design can handle sewage, waste, toilet paper, cigarettes, cigars, and all solids maceration of approximately 1 inch size. Macerator WILL NOT handle fruit pits, hard plastic utensils, prophylactics, cloth or sanitary napkins.


  • All bronze construction
  • Sturdy and corrosion resistant
  • Large Vent Openings Separate Pump and Motor
  • Stainless Steel Motor Shaft
  • Motor Shaft Slinger Protects Motor Bearings
  • Three Conductor Motor Cord
  • Neoprene Impeller Compound Eliminates Seizing and Motor Overload - Optional Nitrile Impeller (-05)
  • Macerator Wheel and Impeller Easily Replaced
  • High Torque Capacitor Start 1/3 HP TEFC Motor

Liquids and Temperatures 

Liquids compatible with neoprene can be pumped including fresh and salt water solutions and mild chemicals. Do not pump severe solvents or acids. When possible, flush pump with fresh water after each usage. Nitrile impellers can handle oil contaminated water and kerosene at reduced impeller service life. Extremes of cold and heat will affect impeller life. Limits of 40°F to 180°F should be observed. Do not allow liquid in pump to freeze. Drain pump by loosening cover screws. Use methyl alcohol based anti-freeze compounds such as Zerex, Shell Zone, Pyro Permanent, Permagard, or Dowgard.


Flexible impellers generate high rubbing friction unless lubricated by liquid being pumped. Lack of liquid will cause impellers to burn up. It is important to avoid dry start-ups. Usually sufficient liquid for a “wet” start is trapped in pump piping system during normal usage. If not, inject water or lubricating oil thru inlet or outlet ports or thru pipe plug openings on pump castings. (Caution - do not remove flush panhead screw holding pump body cam in position - see exploded view). It is most important to insure a “wet” start when a pump is being used for the first time in a new installation or after a prolonged storage period when all liquid has evaporated. Any plugs removed from pump body or cover must be re-tightened prior to start up.

Suction Lift

Pump Inlet (suction)- All suction connections must be air tight and as short as possible to achieve lift. A suction lift of up to 4 feet is possible under ideal conditions. Because the suction line for sewage handling is of large size (1 1/2” pipe) a large volume of air must be evacuated to create vacuum and suction lift. This is why a “wet” start is essential to prevent overheating and burning of the impeller during the air evacuation and suction period.


214M-F35 Pump


Oberdorfer 214M-F35