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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PumpBiz
WOBBLE STATOR PUMP & 3 phase MOTOR
APM-44CSFM-3
$3,821.55Liberty Pumps are backed by over fifty years of progressive cavity pump product sales and technical service experience. American Pump Series Progressive Cavity Pumps are designed with a singular helical rotor that eccentrically turns within a dou... -
Hypro Pumps
Cast Iron Gear pump 1/4"
GMCV2VA33T
$2,131.57Rotary Cast Iron Gear pump 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 than o...
3/4HP 230/460v TEFC 1/4" Learn More -
PumpBiz
WOBBLE STATOR PUMP & 3 phase MOTOR
APM-56CSQM-3
$3,148.20Liberty Pumps are backed by over fifty years of progressive cavity pump product sales and technical service experience. American Pump Series Progressive Cavity Pumps are designed with a singular helical rotor that eccentrically turns within a d... -
Oberdorfer Pumps
1.25" Bronze gear pump
N1100W-T98
$2,159.001 1/4" Bronze rotary gear pump with relief valve and close coupled to a 1 1/2 HP TEFC motor.Use to pump oil and other viscous thick liquids, De-icing fluids.
1.5HP 230/460v Learn More -
Hypro Pumps
316 Stainless Steel Gear pump
GMSV6C3T
$4,130.06Rotary Gear pump with motor. 316 Stainless construction, Ryton gears.Use for pressure spraying, circulation of lubricants, tank / drum filling. Will handle water like liquids to very thick. Bi-rotational allows for flow direction reversal. ...
3HP 230/460V TEFC Learn More -
AMT Pumps
3" Electric Diaphragm Pump
337T-96
20% Off Special Price $2,702.40 Regular Price $3,378.00Electric Diaphragm water pumps features 2-stage, 44 to 1 gear reduction with a large diameter output gear and heavy duty ball bearing construction. Often referred to as Mud pumps or Sludge pumps, diaphragm trash pumps are designed to pump mud, slu...
1.5HP 3 Phase Electric Learn More -
Oberdorfer Pumps
Bronze Rotary Gear Pump w/ motor
N990J-W97
$1,949.00Oberdorfer 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
N990K-Y97
$2,478.00Oberdorfer 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 shaft by ...
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Oberdorfer Pumps
Bronze Rotary Gear Pump w/ motor
N990L-Y98
$2,984.00Oberdorfer 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
N992 Pump & Mtr.
N992S5Q-J97
$1,138.50Bronze rotary gear pump with electric 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 s...230/460v 1/2HP FKM Learn More
