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
PP Air Operated Double Diaphragm Pump Bolted Series
A050-SPP-VVPV-S70
$831.73PolyPro Air AODD Pump 1/4". Lube-free air valve, Non-stalling, No vent holes for corrosive fumes to get into, All plastic air system are corrosion resistant. Non-electrical. For handling large size solids order the Max-pass valve under accessor... -
Oberdorfer Pumps
12vdc Bronze Rotary Gear Pump w/ relief valve
N991R-32A96
$658.00Bronze gear pump 12v. Pump housings and gears are made of top quality bronze, shafts are 303 stainless steel. Bearings are designed of high performance carbongraphite material selected for wear resistance and long service life. Gear pumps are pos...12vdc 1/4HP Learn More -
Pulsafeeder
Metering Pump 5 GPD/250 PSI
LPB2SA-PTC1
$848.16The Series E Plus offers manual control over stroke length andstroke rate.- 20 flow/pressure envelops
- 100:1 turn down ratio
- Auto-off-Manual selection switch with indicator lights
- Built in fuse
- Clear hinged cover over controls for water resistance...
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General Pump
TT 51 Triplex Plunger 3.1hp
TT9071EBFU
$667.00TT Series 51, Triplex plunger pump, hollow shaft, flanged for direct couple to electric motors, with built-in unloader. Pump Only.- Forged brass manifold with exclusive lifetime warranty
- Die cast, anodized aluminum, oil-bath crankcase
- Solid ceram...
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Oberdorfer Pumps
N991 Oberdorfer Bronze gear pump & motor
N991-32F41
$753.00Oberdorfer Bronze gear pump & motor. 3/8" 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 ser...115v 3/8" Learn More -
Oberdorfer Pumps
N991 Oberdorfer PUMP & MTR.
N991-F41
$753.00Glycol circulation Pump by Oberdorfer is just one of hundreds of applications. 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 selec...1/3HP 115 Learn More -
Hypro Pumps
Bronze Gear pump PEO
GCBN2V
$783.43Bronze Gear pump for close coupling to a 1/3 hp Carbonator type motor.Includes relief valve. Pump end only. Replaces 6PA26
1/4" no motor Learn More -
Hypro Pumps
Bronze Gear Pump W/Relief
BBV1
$699.00Bronze Pedestal Gear Pump, light duty with relief valve.
Also see N2000 or N3000
Self-priming, positive displacement, external rotary gear pumps are ideal for a wide range of light-duty industrial, marine, agricultural, and commercial applicatio...
Bronze 1/4" Learn More -
Pulsafeeder
15 GPD/100 PSI Metering Pump
015-XA-AAAAXXX
$832.6515 GPD 100 PSI metering pump 115 vac. 25 strokes / minute max. Turn Down Ratio: 10:1CHEM-TECH Series 100 Metering Pump 15 GPD @ 100 PSI, 115 VAC Manual Control Stroke length is manually adjustable. See Specifications and Downloads tabs for de...115v 0.63GPH Learn MorePulsafeeder
24 GPD/100 PSI Metering Pump
024-XA-BAAA7XXX
$836.55Chem-Tech Series 100 & 150 positive displacement, Chem-Tech diaphragm pumps are respected by professionals around the world for dependability, easy maintenance and versatility in a wide range of water treatment applications.24 GPD 100 PSI met...