Positive displacement pumps seal water in a chamber, and then force it out by reducing the volume of the chamber. Piston, diaphragm and rotary vane pumps are examples of positive displacement pumps. They are used for low volume and high lift. Learn more about positive displacement pumps.

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Logo for AR North AmericaAR North America (Fridley, MN)
AR North American manufactures high pressure pumps, plunger pumps, positive displacement pumps, reciprocating pumps, stainless steel pumps, and triplex plunger pumps.
Product(s) by AR North America
Logo for Valco Instruments Co. Inc.Valco Instruments Co. Inc. (Houston, TX)
VICIŽ is an acronym for Valco Instruments Company Inc. VICI now defines multiple companies which manufacture various products for the analytical industry.
Product(s) by Valco Instruments Co. Inc.
Logo for CAT PUMPS-High Pressure Pumps & SystemsCAT PUMPS-High Pressure Pumps & Systems (Minneapolis, MN)
CAT PUMPS positive displacement high pressure piston and plunger pumps are energy-efficient and low-maintenance. They are designed for continuous-duty applications from .5-320 GPM, 100-7000 PSI. Ask about our custom engineered POWER UNITS [skid mounted pump systems] built to your specifications.
Product(s) by CAT PUMPS-High Pressure Pumps & Systems
Logo for Randolph Austin CompanyRandolph Austin Company (Manchaca, TX)
Randolph peristaltic pumps are manufactured to exacting tolerances with high quality materials. The rugged construction of the Randolph pump makes it an ideal choice for applications where trouble free performance is necessary.
Product(s) by Randolph Austin Company
Logo for Northern Pump (Div. of McNally Industries)Northern Pump (Div. of McNally Industries) (Fridley, MN)
Northern® gear pumps are positive displacement rotary gear pumps that are designed for nearly any liquid transfer application, particularly those involving extremes of temperature, viscosity, pressure and inlet conditions.
Product(s) by Northern Pump (Div. of McNally Industries)
 B & D Pumps, Inc. (Huntly, IL)
The Positive Displacement Pumps UGP line can be used for many chemical applications including Laboratory, Plating systems, Metering, Photographic and Printing Industries.
 
 Fultz Pumps, Inc. (Lewistown, PA)
Fultz Pumps, Inc. has been providing the environmental industry with groundwater sampling equipment since 1985. We handle all manufacturing and sales from our facility Central Pennsylvania. We stock a large supply of our equipment for immediate shipment.
 
 Boerger LLC (Minneapolis, MN)
Boerger Pumps are in use in industrial and municipal applications. Unique,patented features are the replaceable rotor-tips and the readjustable rotor. Various material combinations, metals, rubber and plastic allows for the use in almost every application. contact us: http://www.boerger-pumps.com
 
 Dynex/Rivett Inc. (Pewaukee, WI)
Dynex manufactures hydraulic components and systems used in demanding applications, including high pressure, special fluids, dirty environments and long duty cycles. Products include piston pumps, directional and pressure controls, vane and piston motors, linear actuators, and power units.
 
 Webster Fuel Pumps & Valves (Frankfort, KY)
Webster is a leading manufacturer of fuel oil pumps and valves for the oil heat industry.
 
 KNF Neuberger, Inc. (Trenton, NJ)
The positive displacement metering pump is generally the first choice for providing precise and repeatable flow in many medical device fluid dispensing applications. Positive displacement pumps operate by trapping a fixed volume of fluid and moving this fluid via gears, pistons, diaphragms, etc.
 
 Moyno, Inc. (Springfield, OH)
The MoynoŽ 2000 progressing cavity pump is a proven performer in heavy-duty, viscous and high-solids pumping applications. This versatile, high-performance pump is designed to handle a wide range of applications from shear-sensitive chemicals to difficult to process slurries and sludges.
 
 Sundyne (Arvada, CO)
 
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