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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Jabsco Pumps
Commercial Duty 24v DC
18670-0943
$407.00Commercial Duty Water Puppy has 25% more flow than the standard model and a heavy duty PMDC 24 vdc motor. For general transfer pumping where self-priming, 8 gpm flow and debris tolerance are required. Oil-resistant nitrile impeller is standard. D...24v Learn More -
All-Flo Pumps
Conductive Nylon AODD Bolted Model
CB-038
$416.46Although the air powered pump eliminates ignition from electrical motors and internal combustion engines when pumping flammable fluids there is still the possibility of static electrical charge build up on the outside of the pump. All-flo now p... -
Jabsco Pumps
Diesel refueling pump
23870-1200
$299.00Jabsco rotary vane pump for diesel fuel and other fuel oils. Transfer pump for refuelling small sizes diesel powered vehicles 50 gal. from drums. Suitable for mounting to the following equipment: Excavators, Cranes, Road rollers (compactors), P...12vdc Learn More -
All-Flo Pumps
PP Air Operated Double Diaphragm Pump Bolted Series
S038-SQP-GNPN-S70
$422.99PolyPro Air AODD Pump 3/8". Max-Pass valve installed. 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 previous model PB-038. Click here to ...
3/8" PP Learn More -
All-Flo Pumps
PP Air Operated Double Diaphragm Pump Bolted Series
PV-038
$432.09PolyPro Air AODD Pump 3/8". 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
Bronze Pedestal Gear Pump w/ relief valve
N1000R
$309.00Bronze Pedestal Gear pump with relief valve. Often used as a coolant pump on welding torch. Pump flow is reversible.- Gear pumps are positive displacement pumps. Each shaft revolution displaces a definite amount of liquid relatively unaffecte...
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PumpBiz
Roller Pump Ni-Resist
6500N
$449.00Hypro® SherTech® NR 6500 Series roller pumps generate high pressures at low flow rates. Their compact, self-priming design and their ability to handle abrasives make them a efficient solution for a wide variety of challenging applications.Hy...
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Aquatec Pumps
Ag 115v Diaphragm Pump
5502-2F77-M526
$361.00Aquatec 550 Series Super Flow Pump: These pumps are specifically designed for Ag applications such as MOSQUITO pesticides and fertilizers.- OPERATION: The 550 pumps can draw water from a holding tank and pressurize it, or boost the pressure from ...
4GPM 70psi Learn More -
Flojet Pumps
Air Diaphragm pump
G573208
$259.00Air driven, pneumatic pump. Glass filled Polypropylene double diaphragm pump with FKM diaphragms and check valve seats. Springs are Hastalloy.Connections are 3/8" HB straight. Air connection is 1/4" HB PLASTIC.
FKM Learn More -
Flojet Pumps
Duplex Diaphragm pump
G573225
$338.00Glass filled Polypropylene double diaphragm pump with FKM diaphragms and check valve seats. Springs are Hastalloy.Connections are 3/4" straight. Air connection is 1/4" FNPT brass.
