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Oberdorfer Bronze gear pump. Close coupled bronze rotary gear pumps. Available as pump end only PEO or coupled to a NEMA standard frame motor.
  • 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 liquid 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. If used continuously, the pump will over heat. 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 graphite bushing 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 wate 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.
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Manufacturer: Oberdorfer Pump
Model Number: N990D1GOC-C34
HP Standard : 0.25 HP
Inlet Connection Type : FNPT
Inlet : 1 "
Outlet Connection Type : FNPT
Outlet : 1 "
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 : 225 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0.01 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : Carbon-Bronze
Mechanical Seal Type : Double
Pump Bearing : Carbon/graphite
Warranty : 1 Year/s
Applications : Constant Pressure
Applications : Coolant
Applications : Dosing
Applications : Flooded Suction
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…  
$42300
Manufacturer: Oberdorfer Pump
Model Number: N990RH-M46
Maximum Flow : 15 gallons/min
TDH (Head) Maximum @ 0GPM : 19.91 PSI
Head (TDH) Maximum @ 0GPM : 46 FT
HP Standard : 0.75 HP
Inlet Connection Type : FNPT
Inlet : 1 "
Outlet Connection Type : FNPT
Outlet : 1 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Voltage : 115/230 V
Phase : 1
Frequency : 60 Hz
Motor : ODP
Speed : 1140 RPM
Motor Frame : 56C
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 225 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0.01 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : Buna Lip Seal
Mechanical Seal Type : Double
Pump Bearing : Carbon/graphite
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Dosing
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…  
$135600
Manufacturer: Oberdorfer Pump
Model Number: N990RH-N26
Maximum Flow : 23 gallons/min
TDH (Head) Maximum @ 0GPM : 150.22 PSI
Head (TDH) Maximum @ 0GPM : 347 FT
HP Standard : 1 HP
Inlet Connection Type : FNPT
Inlet : 1 "
Outlet Connection Type : FNPT
Outlet : 1 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Elastomers : Buna-Nitrile
Voltage : 115/230 V
Phase : 1
Frequency : 60 Hz
Motor : ODP
Speed : 1725 RPM
Motor Frame : 56C
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 225 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0.01 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Coupling : Y
Mechanical Seal : Buna Lip Seal
Mechanical Seal Type : Double
Pump Bearing : Carbon/graphite
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Dosing
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…
Sale Price
$72500
Manufacturer: Oberdorfer Pump
Model Number: N990
Maximum Flow : 23 gallons/min
TDH (Head) Maximum @ 0GPM : 150 PSI
Head (TDH) Maximum @ 0GPM : 346.5 FT
Inlet Connection Type : FNPT
Inlet : 1 "
Outlet Connection Type : FNPT
Outlet : 1 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 225 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0.01 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Mechanical Seal : Buna Lip Seal
Mechanical Seal Type : Double
Pump Bearing : Carbon/graphite
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Dosing
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…  
$50100
Manufacturer: Oberdorfer Pump
Model Number: N990-37
Maximum Flow : 23 gallons/min
TDH (Head) Maximum @ 0GPM : 150 PSI
Head (TDH) Maximum @ 0GPM : 346.5 FT
Inlet Connection Type : FNPT
Inlet : 1 "
Outlet Connection Type : FNPT
Outlet : 1 "
Wetted Materials : Bronze
Wetted Materials : 304SS
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 225 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0.01 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Mechanical Seal : Buna Lip Seal
Mechanical Seal Type : Double
Pump Bearing : Carbon/graphite
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Dosing
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…  
$64000
Manufacturer: Oberdorfer Pump
Model Number: N990-38
Maximum Flow : 23 gallons/min
TDH (Head) Maximum @ 0GPM : 150 PSI
Head (TDH) Maximum @ 0GPM : 346.5 FT
Inlet Connection Type : FNPT
Inlet : 1 "
Outlet Connection Type : FNPT
Outlet : 1 "
Wetted Materials : Bronze
Wetted Materials : 304SS
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 225 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0.01 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Mechanical Seal : Buna Lip Seal
Mechanical Seal Type : Double
Pump Bearing : Carbon/graphite
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Dosing
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…  
$121300
Manufacturer: Oberdorfer Pump
Model Number: N990-37R
Maximum Flow : 23 gallons/min
TDH (Head) Maximum @ 0GPM : 150 PSI
Head (TDH) Maximum @ 0GPM : 346.5 FT
Inlet Connection Type : FNPT
Inlet : 1 "
Outlet Connection Type : FNPT
Outlet : 1 "
Wetted Materials : Bronze
Wetted Materials : 304SS
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 225 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0.01 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Mechanical Seal : Buna Lip Seal
Mechanical Seal Type : Double
Pump Bearing : Carbon/graphite
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Dosing
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…  
$78700
Manufacturer: Oberdorfer Pump
Model Number: N990R-38
Maximum Flow : 23 gallons/min
TDH (Head) Maximum @ 0GPM : 150 PSI
Head (TDH) Maximum @ 0GPM : 346.5 FT
Inlet Connection Type : FNPT
Inlet : 1 "
Outlet Connection Type : FNPT
Outlet : 1 "
Wetted Materials : Bronze
Wetted Materials : 304SS
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 225 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0.01 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Mechanical Seal : Buna Lip Seal
Mechanical Seal Type : Double
Pump Bearing : Carbon/graphite
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Dosing
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…  
$126700
Manufacturer: Oberdorfer Pump
Model Number: N990R
Maximum Flow : 23 gallons/min
TDH (Head) Maximum @ 0GPM : 150 PSI
Head (TDH) Maximum @ 0GPM : 346.5 FT
Inlet Connection Type : FNPT
Inlet : 1 "
Outlet Connection Type : FNPT
Outlet : 1 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 225 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0.01 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Mechanical Seal : Buna Lip Seal
Mechanical Seal Type : Double
Pump Bearing : Carbon/graphite
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Dosing
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…  
$56700
Manufacturer: Oberdorfer Pump
Model Number: N990RS15
Maximum Flow : 23 gallons/min
TDH (Head) Maximum @ 0GPM : 150 PSI
Head (TDH) Maximum @ 0GPM : 346.5 FT
Inlet Connection Type : FNPT
Inlet : 1 "
Outlet Connection Type : FNPT
Outlet : 1 "
Wetted Materials : 304SS
Wetted Materials : Bronze
Self Priming : 1
Suction Lift : 20 FT
Max Operating Temp : 300 °F
Viscosity : Glycerine 880.00 cp 5000.00 ss
Max. Particle Size : 0.01 "
Max. Particle Hardness : 1 MOH
Max. Volume of Suspended Solids : 0 %
Shaft : 304SS
Mechanical Seal : Viton Lip Seal
Mechanical Seal Type : Double
Pump Bearing : Carbon/graphite
Warranty : 1 Year/s
Applications : Flooded Suction
Applications : Coolant
Applications : Constant Pressure
Applications : Dosing
Applications : Fuel Oil
Applications : Self-Priming
PH High : 11 pH
Other : Clockwise rotation from pump e
Read more…  
$63200
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