N991 Bronze Gear Pump
Oberdorfer Pumps has been manufacturing high-quality, dependable
pumps for over 100 years. We manufacture gear pumps, centrifugal
pumps, rubber impeller pumps, progressive cavity pumps, and roller
pumps. Positive displacement BRONZE gear pumps. Little flow
decrease with pump pressure increase. Flow increases with speed
increase. Flow from 1-175 GPM (3 - 662 LPM)and pressures from 0-150
PSI (0 - 10.3 BAR). Pump housings and gears are made of top quality
bronze, shafts are 303 stainless steel. 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 50 PSI for water and
non-lubricants, 75 PSI for oil and other lubricants.The maximum
shaft speed is 1725 RPM. As a general rule, the suction lift should
be kept at an absolute minimum by placing the pump as close to the
liquid source as possible. A gear pump in new conditioncan lift 20
feet of water in the suction line. A foot valve (preferably with
built-instrainer) is recommended at the beginning of the suction
line. For a first start-up, thepump should be primed to avoid dry
running. Minimum size of the suction pipe is thesize of the pump
inlet port. For longer suction lines (over 3 feet) or for
viscousliquids, the pipe should be at least one size or two sizes
larger than the pump inletport.
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Oberdorfer Pumps
Close Coupled Bronze Rotary Gear Pump
N991
$414.00Rotary Gear Pump ONLY, no motor. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service life. Pesti...Pump End Only, no relief valve Learn More -
Oberdorfer Pumps
Bronze Rotary Gear Pump w/ relief valve & Motor
N991RM-32F01
$743.00Bronze Rotary Gear Pump. Includes electric motor. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long se...115v 1/4" Learn More -
Oberdorfer Pumps
Close Coupled Bronze Rotary Gear Pump w/ relief valve
N991RN32-F08
$881.00Bronze Rotary Gear Pump with electric motor. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service...Pump & 1/3HP Motor 115v 1/4" Learn More -
Oberdorfer Pumps
Bronze Rotary Gear Pump w/ relief valve
N991R-F41
$813.00Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service life. Gear pumps are positive displacement p... -
Oberdorfer Pumps
Bronze Rotary Gear Pump w/ relief valve
N991R
$459.00Rotary Gear Pump w/ relief valve ONLY, no motor. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbon graphite material selected for wear resistance and long se...1/4" PEO Learn More -
Oberdorfer Pumps
Close Coupled Bronze Rotary Gear Pump w/ relief valve
N991RM-J07
$984.00Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service life. Gear pumps are positive displacement pum...1/2HP 115/230v Learn More -
Oberdorfer Pumps
Bronze Rotary Gear Pump w/ relief valve
N991RM-F07
$925.00Bronze gear pump with motor. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Includes relief valve. Bearings are designed of high performance carbongraphite material selected for wear resistance and long se...115/230v 1/3HP Learn More -
Oberdorfer Pumps
12vdc Bronze Rotary Gear Pump w/ relief valve
N991R-32A96
$658.00Bronze gear pump 12v. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service life. Gear pumps are pos...12vdc 1/4HP Learn More -
Oberdorfer Pumps
DC Bronze Rotary Gear Pump w/ relief valve
N991R-32C81
$1,427.00Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service life. Gear pumps are positive displacement pum...12VDC 1/4 Learn More