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N991 Gear PUMP & motor

Model Number
N991M-J07
$818.00
Oberdorfer N991M-J07 N991 Gear PUMP  motor
Gear PUMP & 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.

More Information
Model Number N991M-J07
part number N991M-J07
Series N Oberdorfer Gear Pumps Bronze
Max Flow (GPM.) 2
Max Flow GPH 120
TDH Maximum (Ft) 347
TDH Maximum (PSI) 150
Horse Power (HP) 1/2
Horsepower (IE .5, 1, 1.5, 20) 0.5000
Inlet Connection Type FNPT
inlet size Less than 1"
Inlet (In.) 0.25
Outlet Connection Type FNPT
Outlet (In.) 0.25
Wetted Materials 304SS, Bronze
Elastomers / O-ring Buna-Nitrile
Voltage (V) 115/230
Voltage (Range) 110-120/220-240
Phase (Ø) Single (1)
Motor Frequency 60
Motor ODP
Speed (RPM.) 1725
Self Priming Yes
Suction Lift (FT.) 20
Max Operating Temperature (F) 230
Viscosity Glycerine 880.00 cp 5000.00 ssu
Shaft 304SS
Mechanical Seal LIP SEAL
Mechanical Seal Type Single
Coupling Y
Pump Bearing Carbon
Drain No
Port Rotation Yes
Country of Manufacture United States
Weight (Lbs) 23.000000
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