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Oberdorfer Bronze Gear pumps. Pump housings and gears are made of top quality bronze, shafts are from stainless steel 303. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long service life.

Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of l9iquid relatively unaffected by the back pressure in the discharge line. Shaft speed and flow are directly proportional. Recommended pressure limits are 100 psi for water and non-lubricants, 150 psi for oil and lubricants. Maximum shaft speed is 1750 rpm.

A relief valve is necessary in the system if the discharge line contains any throttling devices, such as a shut-off valve, a spray nozzle or other restrictive device. This will return the liquid to the suction side or to the tank. The relief valve is also available as part of the pump itself (R-model pumps). However, built-in relief valves are only good for intermittent service. A built-in relief valve is strictly a safety device against overpressure. It will not work successfully as a pressure or flow control device. For this purpose a separate relief valve in the pressure line must be used.

Service life will be increase substantially if the liquid pumped is clean and has a lubricity value. These pumps have extremely close tolerances. Fine abrasives like sand, silt, or powder in suspension will destroy pumping ability.

Liquids compatible with bronze, stainless steel and the acrylic graphite packing can be pumped. Solvent resistant packings and Teflon® packings are also available.

Temperature extremes are detrimental to service life and should be avoided. Basic metals of construction allow temperature range of _40F to 400F. The acrylic graphite packing is rated to 500F. Freezing liquid in the pump can deform or damage the pump.

Viscous liquids such as molasses or oils require a lower pumping speed, in extreme cases as low ass 200 R.P.M. Liquids with specific gravities heavier than water such as dry cleaning fluids require an increase in motor horsepower directly proportional to the increase in specific gravity over water.

A rotary gear pump is capable of lifting water on the suction side as high as 20 feet. Though gear pumps are self-priming, a foot valve is recommended. For pumping water directly from streams or ponds, a wire mesh strainer must be used at the beginning of the suction line to prevent stones from entering the pump. Strainer and foot valve are commercially available as combination units.

NOTE: For the individual pump performance curves and dimensional drawings, please select a model from below. Used for vegetable oil, biodiesel.

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3/4HP 115/230v
Manufacturer: Oberdorfer Pump
Model Number: N993C-M26
Maximum Flow : 8 gallons/min
TDH (Head) Maximum @ 0GPM : 100 PSI
Head (TDH) Maximum @ 0GPM : 231 FT
HP Standard : 0.75 HP
Inlet Connection Type : FNPT
Inlet : 0.5 "
Outlet Connection Type : FNPT
Outlet : 0.5 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Elastomers : Buna-Nitrile
Voltage : 115/230 V
Phase : 1
Frequency : 60 Hz
Motor : ODP
Speed : 1725 RPM
MTR Cord Length : 0 FT
Self Priming : 1
Suction Lift : 15 FT
Max Operating Temp : 14 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0 "
Max Specific Gravity : 1.4 sp. gr.
Max. Particle Hardness : 5 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : Rotary lip
Mechanical Seal Type : Single
Pump Bearing : Carbon
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Fuel Oil
Applications : High Pressure
Applications : Hydrostatic Test
Applications : Self-Priming
PH High : 11 pH
Other : For diesel fuel transfer simpl
Country of Origin : USA
Drain Plug : No
Read more…  
$99900
Manufacturer: Oberdorfer Pump
Model Number: N991-F41
Maximum Flow : 2 gallons/min
TDH (Head) Maximum @ 0GPM : 150 PSI
Head (TDH) Maximum @ 0GPM : 346.5 FT
HP Required : 0.4 HP
HP Standard : 0.5 HP
Inlet Connection Type : FNPT
Inlet : 0.25 "
Outlet Connection Type : FNPT
Outlet : 0.25 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Elastomers : Buna-Nitrile
Voltage : 115 V
Phase : 1
Frequency : 60 Hz
Motor : ODP
Speed : 1725 RPM
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 140 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0 "
Max Specific Gravity : 1.4 sp. gr.
Max. Particle Hardness : 5 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : Lip Seal
Mechanical Seal Type : Single
Pump Bearing : Carbon
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Fuel Oil
Applications : High Pressure
Applications : Hydrostatic Test
Applications : Self-Priming
PH High : 11 pH
Read more…  
$59900
Manufacturer: Oberdorfer Pump
Model Number: N991R-32
Maximum Flow : 2 gallons/min
TDH (Head) Maximum @ 0GPM : 150 PSI
Head (TDH) Maximum @ 0GPM : 346 FT
HP Required : 0.4 HP
Watts : 0 W
Inlet Connection Type : FNPT
Inlet : 0.25 "
Outlet Connection Type : FNPT
Outlet : 0.25 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Elastomers : Buna-Nitrile
Speed : 1725 RPM
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 140 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0 "
Max Specific Gravity : 1.4 sp. gr.
Max. Particle Hardness : 5 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : Lip Seal
Mechanical Seal Type : Single
Pump Bearing : Carbon
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Fuel Oil
Applications : High Pressure
Applications : Hydrostatic Test
Applications : Self-Priming
PH High : 11 pH
Other : Pump End only. Uses motor brac
Country of Origin : USA
Read more…  
$28900
Manufacturer: Oberdorfer Pump
Model Number: N13HDM
Maximum Flow : 80 gallons/min
TDH (Head) Maximum @ 0GPM : 100 PSI
Head (TDH) Maximum @ 0GPM : 231 FT
HP Required : 8 HP
Watts : 0 W
Inlet Connection Type : FNPT
Inlet : 1.5 "
Outlet Connection Type : FNPT
Outlet : 1.5 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Elastomers : Viton
Speed : 1140 RPM
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 400 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : packing
Mechanical Seal Type : Double
Pump Bearing : Carbon
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Constant Pressure
Applications : Drum
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…  
$119000
Up to 80GPM
Manufacturer: Oberdorfer Pump
Model Number: N13500-21
Maximum Flow : 80 gallons/min
TDH (Head) Maximum @ 0GPM : 100 PSI
Head (TDH) Maximum @ 0GPM : 231 FT
HP Required : 8 HP
Inlet Connection Type : FNPT
Inlet : 1.5 "
Outlet Connection Type : FNPT
Outlet : 1.5 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Elastomers : Viton
Speed : variable RPM
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 400 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : packing
Pump Bearing : Carbon
Impeller Mat'l / Type : Bronze gears
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Constant Pressure
Applications : Drum
Applications : Fuel Oil
Applications : Self-Priming
Other : Clockwise rotation from pump e
Country of Origin : USA
Duty : Continuous on lubricating liquids. Use slow speed motor for water.
Read more…  
$123400
Up to 55GPM
Manufacturer: Oberdorfer Pump
Model Number: N11500-21
Maximum Flow : 60 gallons/min
TDH (Head) Maximum @ 0GPM : 100 PSI
Head (TDH) Maximum @ 0GPM : 231 FT
HP Required : 5 HP
Inlet Connection Type : FNPT
Inlet : 1.25 "
Outlet Connection Type : FNPT
Outlet : 1.25 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Elastomers : Viton
Speed : variable RPM
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 400 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : packing
Pump Bearing : Carbon
Impeller Mat'l / Type : Bronze gears
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Constant Pressure
Applications : Drum
Applications : Fuel Oil
Applications : Self-Priming
Other : Clockwise rotation from pump e
Country of Origin : USA
Duty : Continuous on lubricating liquids. Use slow speed motor for water.
Read more…  
$133400
Up to 55GPM, Viton Lip seal
Manufacturer: Oberdorfer Pump
Model Number: N11500-S5
Maximum Flow : 60 gallons/min
TDH (Head) Maximum @ 0GPM : 100 PSI
Head (TDH) Maximum @ 0GPM : 231 FT
HP Required : 5 HP
Inlet Connection Type : FNPT
Inlet : 1.25 "
Outlet Connection Type : FNPT
Outlet : 1.25 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Elastomers : Viton
Speed : variable RPM
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 400 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : Lip
Pump Bearing : Carbon
Impeller Mat'l / Type : Bronze gears
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Constant Pressure
Applications : Drum
Applications : Fuel Oil
Applications : Self-Priming
Other : Clockwise rotation from pump e
Country of Origin : USA
Duty : Continuous on lubricating liquids. Use slow speed motor for water.
Read more…  
$139400
1/2HP 115/230v
Manufacturer: Oberdorfer Pump
Model Number: N993Q-J46
Maximum Flow : 8 gallons/min
TDH (Head) Maximum @ 0GPM : 90 PSI
Head (TDH) Maximum @ 0GPM : 207 FT
HP Standard : 0.5 HP
Inlet Connection Type : FNPT
Inlet : 0.5 "
Outlet Connection Type : FNPT
Outlet : 0.5 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Elastomers : Buna-Nitrile
Voltage : 115/230 V
Phase : 1
Frequency : 60 Hz
Motor : ODP
Speed : 1140 RPM
Self Priming : 1
Suction Lift : 15 FT
Max Operating Temp : 14 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0 "
Max Specific Gravity : 1.4 sp. gr.
Max. Particle Hardness : 5 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : Rotary lip
Mechanical Seal Type : Single
Pump Bearing : Carbon
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Fuel Oil
Applications : High Pressure
Applications : Hydrostatic Test
Applications : Self-Priming
PH High : 11 pH
Other : For diesel fuel transfer simpl
Country of Origin : USA
Read more…  
$138900
PEO
Manufacturer: Oberdorfer Pump
Model Number: N993-S5
Maximum Flow : 8 gallons/min
TDH (Head) Maximum @ 0GPM : 75 PSI
Head (TDH) Maximum @ 0GPM : 173 FT
HP Required : 0.65 HP
Inlet Connection Type : FNPT
Inlet : 0.5 "
Outlet Connection Type : FNPT
Outlet : 0.5 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Elastomers : Viton
Speed : 1725 RPM
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 140 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0 "
Max Specific Gravity : 1.4 sp. gr.
Max. Particle Hardness : 5 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : Lip
Mechanical Seal Type : Single
Pump Bearing : Carbon
Warranty : 1 Year/s
Applications : Coolant
Applications : Constant Pressure
Applications : Fuel Oil
Applications : High Pressure
PH High : 11 pH
Other : Does NOT include hydraulic mot
Read more…  
$44900
Manufacturer: Oberdorfer Pump
Model Number: N3000RS15
Maximum Flow : 7 gallons/min
TDH (Head) Maximum @ 0GPM : 100 PSI
Head (TDH) Maximum @ 0GPM : 231 FT
Inlet Connection Type : FNPT
Inlet : 0.38 "
Outlet Connection Type : FNPT
Outlet : 0.38 "
Wetted Materials : Bronze
Wetted Materials : 304SS
Elastomers : Viton
Speed : 1140 RPM
Self Priming : 1
Suction Lift : 10 FT
Max Operating Temp : 200 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal Type : Double
Pump Bearing : Carbon
Warranty : 1 Year/s
Applications : Constant Pressure
Applications : Fuel Oil
Applications : Flooded Suction
Applications : Self-Priming
Applications : Drum
PH High : 11 pH
Read more…  
$32400
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