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bronze gear pump with motor n992
bronze gear pump with motor n992 N992 Pump flow performance chart oberdorfer n992 gear pump

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Manufacturer: Oberdorfer

N992 Gear Pumps

Product Name:

N992 Pump & Mtr.

Model Number:


Quick Overview

1/3HP 115v


Bronze gear pump. 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. Motor may not include handle.

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 over pressure. 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.

Additional Information

Model Number N992-F41
Series N992 Gear Pumps
Warranty (YRS.) 1
Max Flow (GPM.) 4
TDH Maximum (Ft) 231
TDH Maximum (PSI) 100
HP Required 0.45
Horsepower 0.33
Inlet Connection Type FNPT
Inlet (In.) 0.38
Outlet Connection Type FNPT
Outlet (In.) 0.38
Wetted Materials 304SS, Bronze
Elastomers / O-ring Buna-Nitrile
Voltage (V) 115/230
Phase (Ø) 1
Motor Frequency 60
Motor ODP
Speed (RPM.) 1725
Self Priming Yes
Suction Lift (FT.) 20
Max Operating Temperature (F) 140
Max Specific Gravity 1.4
Max Particle Size (In) 0
Viscosity Glycerine 880.00 cp 5000.00 ssu
Shaft 304SS
Mechanical Seal LIP SEAL
Mechanical Seal Type Double
Coupling Y
Applications Constant Pressure, Coolant, Flooded Suction, High Pressure, Hydrostatic Test, Self-Priming
Pump Bearing Carbon
Drain Yes
Port Rotation Yes
Country of Manufacture
Weight (Lbs) 19
Time to Ship (DAYS) 2-3 days

Supporting Docs

N992 Pump & Mtr.N992 Pump & Mtr. Size: (55.83 KB) Extension: jpg
N992 Pump & Mtr.N992 Pump & Mtr. Size: (7.78 KB) Extension: jpg