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 Cooling Gear Pump w/ relief valve
N1000R-66
$450.00Water-cooled induction heating systems / machine cooling Pump. Bronze Pedestal Gear pump with relief valve. Often used as a coolant pump Ameritherm, Dynaflux. Pump flow is reversible.- Gear pumps are positive displacement pumps. Each shaft re...
Water-cooled induction heating systems / machine cooling Pump. Bronze Pedestal Gear pump with relief valve. Often used as a coolant pump Ameritherm, Dynaflux. Pump flow is reversible.- 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. Learn More
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Pumptec
200PSI Spray Sytem 12V
80326
$477.86Spray Pump Module 200 PSI. Basic Sprayer Pump System easily converts spot sprayer to a high-performance 200 PSI sprayer for tree spraying, ditch and fence line spraying, plus eave/overhand spraying. 114T PumpTec Pump, Nylon Body, FKM O-rings, Tefl...12VDC spray system Nylon body Learn More -
Jabsco Pumps
24V Bronze Vane Puppy Pump
18680-0940
$463.00The Jabsco Reversible Rotary Vane Pump is ideal for transferring diesel fuel. NO reversing switch, it is ideal for moving fuel.- Rotor: Vectra
- Vanes: Ryton
- Seal: Lip Type, Nitrile
- 24V motor
- Self-priming up to about 3 ft.
- Duty cycle-30 minu...
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Oberdorfer Pumps
N991 Bronze gear pump PEO
N991R-32
$459.00Bronze gear pump & motor. 1/4" Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Include relief valve built in. Bearings are designed of high performance carbon-graphite material selected for wear resist... -
Oberdorfer Pumps
N992 Gear Pump PEO
N992
$465.00Gear Pump pump end only, 1/4". 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. Incl...
3/8" Bronze Pump Only Learn More -
Jabsco Pumps
Run dry 24vdc
23920-9323
$499.00Jabsco pump. For general purpose pumping where self-priming and extended run dry capability are required. Liquid stored in the specially designed pumphead provides 10 minutes or more of run dry operation after liquid supply tank is empty. Heavy...23920-9 Learn More -
Jabsco Pumps
Run dry 12VDC Pump
23920-9423
$499.00Jabsco pump 8gpm. For general purpose pumping where self-priming and extended run dry capability are required. Liquid stored in the specially designed pumphead provides 10 minutes or more of run dry operation after liquid supply tank is empty. He... -
Hypro Pumps
Gear Pump
C3V
$451.32CI Pedestal Gear Pump. Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and commercial applications, providing a nearly pulseless flow and are designed ...Cast Iron 3/8" Learn More -
Hypro Pumps
Gear Pump
C3K
$451.32CI Pedestal Gear Pump. Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and commercial applications, providing a nearly pulseless flow and are designed spec... -
Hypro Pumps
Cast Iron Pedestal Gear Pump
C5K
$453.62Cast Iron Pedestal Gear Pump, light duty with grease zerks that requires greasing.Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and commercial applicati...
3/4" Cast Iron Learn More