Rotary Pumps - Gear, Flexible Impeller, Screw
These pumps have a set of rotating gears, flexible impellers, screw
rotor or vanes connected to a driven shaft. Therefore most of these
pumps incorporate a mechanical seal, packing or lip seal along the
shaft at its back end in order to keep the fluid from leaking along
the shaft. There are a few models, which are magnetically coupled
and thus seal-less. Another type which is seal-less is the
Peristaltic which uses a rotating roller assembly to compress a
hose over a given arc length. These pumps are very reliable in
pumping medium to thick liquids which typically are not handled by
Centrifugal pumps and in applications where medium to high
discharge pressures are needed at low flow rates. Varying the motor
speed easily controls their output. Most units include some sort of
built in relief valve, but those that do not must have one
installed into the piping to prevent a dangerous over pressure
condition. Not recommended for liquids with fine abrasives or thin
non-lubricating liquids like water that will accelerate pump
wear.Typical Positive Displacement Rotary pumps include helical
gear, spur gear, lobe, progressive cavity, peristaltic, flexible
impeller and sliding vane to name a few.
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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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Oberdorfer Pumps
Magnetic Drive Pump
SM1031ECM
$5,232.86Designed to handle highly corrosive liquids that must be pumped under pressure. The Chemsteel pump prevents system contamination while maintaining the purity and integrety of the liquid being pumped. Key attributes include:Slotted bearings to lu...
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Oberdorfer Pumps
Magnetic Drive Pump
SM1031BCM
$5,055.96Designed to handle highly corrosive liquids that must be pumped under pressure. The Chemsteel pump prevents system contamination while maintaining the purity and integrity of the liquid being pumped. Key attributes include:Slotted bearings to...
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Oberdorfer Pumps
Magnetic Drive Pump
SM1033BCM
$8,266.44Designed to handle highly corrosive liquids that must be pumped under pressure. The Chemsteel pump prevents system contamination while maintaining the purity and integrety of the liquid being pumped. Key attributes include:Slotted bearings to lu...
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Hypro Pumps
12V DC Cast Iron Gear pump
GMCV4VA-12
$1,253.0012 volt 12v DC Rotary Cast Iron Gear pump. 303 SS fasteners, steel gears. Battery powered self priming heavy duty gear pump.
Adjustable relief valve designed for internal pressure relief, can be ported for either internal or external discharge. D...
12vdc 1HP Learn More -
Hypro Pumps
Bronze Gear pump only
GMBN6V
$1,051.82Rotary Gear pump end. 303 SS fasteners, Ryton 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 than one minute.
Use for pres...
No motor Learn More
