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.

Oberdorfer Pumps

Gas Rubber Impeller Pump

405MG-03UGY

$2,525.00

Gas Engine Oberdorfer rubber (flex) impeller pump with solid cast bronze housing. Close coupled Rubber Impeller Pumps are made of high quality bronze for maximum corrosion resistance. The rubber impeller is mounted on a separate stainless steel sh...

3HP engine 1" Learn More

Add to Wish List Add to Compare
Oberdorfer Pumps

Bronze Rotary Gear Pump w/ motor & relief valve

N990RK-Y95

$2,466.00
Oberdorfer 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...
Learn More

Add to Wish List Add to Compare
Hypro Pumps

316 Stainless Steel Gear pump

GMSV6C7T

$4,300.18

Rotary Gear pump with motor. 316 Stainless construction, Ryton gears.

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...

3HP 230V TEFC Learn More

Add to Wish List Add to Compare
Hypro Pumps

316SS Gear pump end only

GMSV6C

$3,217.03

Rotary Gear pump PEO pump end only. 303 SS fasteners, 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. Flu...

3HP Learn More

Add to Wish List Add to Compare
Oberdorfer Pumps

Bronze Rotary Gear Pump w/ motor

N990K-Y45

$2,387.00
Oberdorfer 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 ...
Learn More

Add to Wish List Add to Compare
Oberdorfer Pumps

Bronze Rotary Gear Pump w/ motor

N990K-Y97

$2,478.00
Oberdorfer 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 ...
Learn More

Add to Wish List Add to Compare
Oberdorfer Pumps

Bronze Rotary Gear Pump w/ motor

N990L-Y98

$2,984.00
Oberdorfer 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...
Learn More

Add to Wish List Add to Compare
Oberdorfer Pumps

Bronze Rotary Gear Pump w/ motor & relief valve

N990RL-Y96

$2,736.00
Oberdorfer 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 ...
Learn More

Add to Wish List Add to Compare
Hypro Pumps

Cast Iron Gear pump

GMCV6VC7

$2,587.51

Rotary 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

Add to Wish List Add to Compare