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
N992R Gear Pump PEO
N992R
$718.90Gear Pump pump end only. 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. Include...Bronze pump only w/relief valve 3/8" Learn More -
Hypro Pumps
Bronze Gear Pump W/Relief
BBV3
$824.00Bronze Pedestal Gear Pump, light duty with relief valve. 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 pul...
bb Learn More -
Aquatec Pumps
24v Elect. diaphragm pump
5852-1F12-B423
$281.78580 Series Super Flow Pump: These pumps are specifically designed for mobile low flow or low voltage applications such as RO water systems, pesticides and fertilizers. 24 VAC. Pressure switch set at 70 PSI. Connections are 3/8 " John Guest fittin... -
Oberdorfer Pumps
1.25" Bronze gear pump
N1100W-T98
$2,806.701 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
Bronze Gear Pump W/Relief
BBV4
$866.00Bronze Pedestal Gear Pump, light duty with relief valve. 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 ...Bronze 1/2" Learn More -
Oberdorfer Pumps
N994 Gear Pump Only
N994R-S15
$1,069.90Gear Pump Only. No motor. Pump housings and gears are made of top quality bronze; shafts are from stainless steel 303. Gear Pump KIT. Bearings are designed of high performance carbon-graphite material selected for wear resistance and long servi... -
Jabsco Pumps
Run dry 24vdc
23920-9323
$615.00Jabsco 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 24vdc Washdown
32605-0094
$238.00This 4.0 GPM (15 LPM) Washdown Pump provides the boater of small to medium vessels with a cost conscious and size maximised higher pressure pump. With a sealed pump head and motor, this new model provides the same ease of installation as all Jabsc...Marine Washdown Learn More -
Hypro Pumps
Bronze Gear Pump W/Relief
BBV6
$877.001" Bronze Pedestal Gear Pump, light duty with relief valve. 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 near...Bronze 1" Learn More -
Jabsco Pumps
Run dry 12VDC Pump
23920-9423
$517.30Jabsco 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...
