Positive Displacement Pumps
These pumps are often thought of as high-pressure pumps. Their
positive displacement of fluid and fixed volume are the result of
the fluid being mechanically moved through their pump passage on a
regular cycle. This means that regardless of the system they
discharge into, the pressure and volume will remain constant. The
power of the driving device and its speed, limit the volume and
pressure.Positive Displacement pumps:Flow rates of GPD, CC/min to
100 GPM typically.Discharge pressures of a 1 to 1000 PSI.Low speed
and fixed volume per cycle, they handle very viscid fluids
well.Smaller than centrifugal pumps.Quiet, do not ad much heat to
the fluid, suitable for shear sensitive fluids.Diaphragm pumps can
easily pass solids, stringy and fibrous foreign matter. Are made in
materials from CI to Titanium and PP, PVDF and PPS engineering
resins.
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Oberdorfer Pumps
Bronze Rotary Gear Pump w/ motor
N990H-N26
$2,276.30Oberdorfer Close coupled bronze rotary gear pumps.- Bronze Construction with SS shaft
- Helical gears for quiet operation
- Self-lubricating carbon bearings
- O-ring seal for max. leak protection
- The pump drive shaft is connected to the motor shaft by ...
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Oberdorfer Pumps
Bronze Rotary Gear Pump w/ motor
N990J-T47
$3,624.13Oberdorfer Close coupled bronze rotary gear pumps.
- Bronze Construction with SS shaft
- Helical gears for quiet operation
- Self-lubricating carbon bearings
- O-ring seal for max. leak protection
- The pump drive shaft is connected to the motor shaf...
1-1/2HP 115/230v 1" Learn More -
Oberdorfer Pumps
Bronze Rotary Gear Pump w/ motor & relief valve
N990RJ-N96
$2,483.00Oberdorfer Close coupled bronze rotary gear pumps.- Bronze Construction with SS shaft
- Helical gears for quiet operation
- Self-lubricating carbon bearings
- O-ring seal for max. leak protection
- The pump drive shaft is connected to the motor shaf...
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Oberdorfer Pumps
Bronze Rotary Gear Pump w/ motor & relief valve
N990RJ-T95
$2,532.40Oberdorfer Close coupled bronze rotary gear pumps.- Bronze Construction with SS shaft
- Helical gears for quiet operation
- Self-lubricating carbon bearings
- O-ring seal for max. leak protection
- The pump drive shaft is connected to the motor shaf...
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Oberdorfer Pumps
Bronze Rotary Gear Pump w/ motor & relief valve
N990RK-Y95
$3,205.80Oberdorfer Close coupled bronze rotary gear pumps.- Bronze Construction with SS shaft
- Helical gears for quiet operation
- Self-lubricating carbon bearings
- O-ring seal for max. leak protection
- The pump drive shaft is connected to the motor shaf...
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Hypro Pumps
Cast Iron Gear pump
GMCV6VC7
$1,111.00Rotary Cast Iron Gear pump 1" with electric motor. 303 SS fasteners, steel gears.Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. Do not operate the relief valve for more ...
3HP 230v/1 ODP 1" Learn More -
Oberdorfer Pumps
Bronze Pedestal Gear Pump W Relief Valve
N4000LRS3
$911.30Bronze Pedestal Gear Pump With Relief Valve. Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings, Chillers (Dynaflux) often used with welders. See performance chart for motor speed VS HP VS performance.
- G...
1/2" w/ relief valve Learn More -
Oberdorfer Pumps
Bronze Pedestal Gear Pump
N4000RS3
$1,357.20Bronze Pedestal Gear pump. Often used as a oil pump on large ships to pre-lube the bearings. See performance chart for motor speed VS HP VS performance.- Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite a...
1/2" Learn More -
Oberdorfer Pumps
3/8 bronze Gear pump
N993R-03
$1,259.70Pump Only PEO, no 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 pu...
Pump Only PEO, Relief 3/8" ports Learn More -
Hypro Pumps
316SS Gear pump
GMSV4A4
$1,735.68316SS Rotary Gear pump with 1HP motor. 303 SS fasteners, Ryton gears. Stainless steel gear pump for aggressive chemicals.
Use for pressure spraying, circulation of lubricants, tank / drum filling. Will handle water like liquids to very thick. B...
1/2" 1HP 115/230v Learn More
