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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All-Flo Pumps
Stainless Steel Air Operated Double Diaphragm Pump
SP-10
$3,862.65Stainless Steel AODD Pump 1".
New PN A100-NA3-TT3T-B70 Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Inlet and outlet manifolds can be rotated s...
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Oberdorfer Pumps
Bronze Pedestal Gear Pump w/ relief valve
N9000LRS15
$1,393.47Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.- Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the b...
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Oberdorfer Pumps
Bronze Pedestal Gear Pump w/ relief valve
N9000RE
$1,357.20Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.- Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by...
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Oberdorfer Pumps
Bronze Pedestal Gear Pump w/ relief valve
N9000RES17
$1,388.40Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.- Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the b...
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Hypro Pumps
Rotary Gear pump only
MCN6VB
$5,266.34Rotary Gear pump end. Cast Iron with 303 SS fastners, CI 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.
U...
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All-Flo Pumps
PVDF Air Operated Double Diaphragm Pump
A100-FPK-SSKE-S70
$3,252.86Kynar PVDF Air AODD Pump 1". Chemical double diaphragm pump made in USA. Featuring All-Flo's Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. Replaces...
1" KE-10 kynar Santo Learn More -
Oberdorfer Pumps
Bronze Pedestal Gear Pump w/ relief valve
N9000RS18
$1,708.20Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.- Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the b...
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Oberdorfer Pumps
Bronze Pedestal Gear Pump w/ relief valve
N9000RS3
$1,357.20Bronze Pedestal Gear pump with relief valve. Often used as a oil pump on large ships to pre-lube the bearings.- Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffected by the b...
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Oberdorfer Pumps
Bronze Rotary Gear Pump PEO
N990S15
$1,331.20Oberdorfer Close coupled bronze rotary gear pump end only.- Bronze Construction with SS shaft
- Helical gears for quiet operation
- Self-lubricating carbon bearings
- O-ring seal for max. leak protection
- Pump End Only (Motor Not Included)
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Oberdorfer Pumps
Bronze Rotary Gear Pump PEO w/ ryton gears
N99011GR
$1,430.00Oberdorfer Close coupled ryton rotary gear pump end only.- Ryton gears with SS shaft
- Helical gears for quiet operation
- Self-lubricating carbon bearings
- O-ring seal for max. leak protection
- Pump End Only (Motor Not Included)
