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
DC Bronze Rotary Gear Pump
N999R-C81
$1,875.90Bronze 12v DC gear pump mounted to a 1200rpm 1/4 HP motor. Pump has relief valve.Features N999 Series:
- Compact design eases installation and use in limited space areas.
- Construction is bronze and stainless steel wetted components.
- Close ...
12 volt DC 1/4" Learn More -
Jabsco Pumps
12VDC Bronze Vane Reversible Pump
18680-1000
$480.80The Jabsco Reversible Rotary Vane Pump is ideal for transferring diesel fuel. With its integral On-Off Reversing switch, it is ideal for moving fuel between port and starboard fuel tanks.
- Rotor: Vectra
- Vanes: Ryton
- Seal: Lip Type, Nitrile
- 12...
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Jabsco Pumps
Bronze Pump 10gpm 115V
11810-0003
$1,041.00Bronze Utility pump, electric motor drive. For general transfer pumping where self-priming, 10gpm flow, debris tolerance and portable 115V AC operation is desired. Nitrile for oil based products. Neoprene for water and general purpose pumping. ...1/3HP Utility pump 115v Learn More -
Jabsco Pumps
Diesel transfer pump
VR050-1022
$369.00Jabsco rotary vane pump for transfer diesel fuel and other fuel oils. Designed for refueling small sizes diesel powered vehicles 50 gal. from drums. Suitable for mounting to the following equipment: Excavators, Cranes, Road rollers (compactors)... -
Oberdorfer Pumps
Bronze gear pump forward reverse
N992-37F30
$2,102.10Oil change pump. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Close coupled to a 115vac motor including a Forward / Off / Reverse switch. Often used at dockside for changing the oil in boats. Bearing...
1/3HP 115v TEFC REVERSIBLE Learn More -
Oberdorfer Pumps
Bronze Pedestal Gear Pump w/ relief valve
N9000R
$1,357.20Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.- Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by t...
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Oberdorfer Pumps
Close Coupled Bronze Rotary Gear Pump
N999RM-F07
$1,241.50Bronze gear pump mounted to a 1725rpm 1/3 HP motor. Pump has relief valve.Features N999 Series:
- Compact design eases installation and use in limited space areas.
- Construction is bronze and stainless steel wetted components.
- Close toleran...
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Oberdorfer Pumps
Bronze Pedestal Gear Pump w/ relief valve
N7000RS17
$1,657.00Bronze Pedestal Gear pump with relief valve and FKM mechanical shaft seal. Often used as a oil pump on large ships to pre-lube the bearings or where high temperature liquid is being pumped.- Gear pumps are positive displacement pumps. Each sha...
FKM Mech Seal Learn More -
Oberdorfer Pumps
Close Coupled Bronze Rotary Gear Pump
N999Q-32-J46
$1,283.10Features N999 Series:
- Compact design eases installation and use in limited space areas.
- Construction is bronze and stainless steel wetted components.
- Close tolerance design allows for consistent performance
- Helical gears for quiet operation.
Pu...
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Oberdorfer Pumps
Bronze Gear Pump & Mtr
N992RMS5-F01
$1,231.23Pump 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. Includes relief valve in pump head...
