Axial flow pumps or propeller pumps allow fluid to enter the impeller axially. They discharge fluid nearly axially, pumping the liquid in a direction that is parallel to the pump shaft.
Pump motor bellhousings are mounting devices used to connect dissimilar motor and pump bolt configurations.
Bladder pumps consist of a flexible, squeezable bladder encased in a rigid outer casing. They are low-flow pneumatic devices used for sampling applications.
Booster pumps are used in applications where the normal system pressure is low and needs to be increased.
Cantilever pumps are centrifugal pumps used in sump pump applications. They are available in horizontal and vertical configurations. Many styles including submersible motors.
Centrifugal pumps consist of a set of rotating vanes, enclosed within a housing or casing, that are used to impart energy to a fluid through centrifugal force.
Chemical pumps are designed for applications requiring greater reliability and durability than conventional pumps.
Condensate pumps are used to collect and transport condensate back into a steam system for reheating and reuse, or to remove unwanted condensate from an HVAC or appliance collection pan.
Cryogenic pumps are designed to move coolants and cryogenic liquids. They are built to withstand and operate in extremely cold temperatures
DC powered pumps use direct current from motor, battery, or solar power to move liquids such as acids, chemicals, lubricants and oil, as well as water, wastewater, and potable water.
Diaphragm pumps use a diaphragm that moves back and forth to transport liquids from one place to another.
Dosing pumps are low-volume fluid pumps with controllable discharge rates used to inject additives into the mixing or pumping system.
Drum pumps are used to transfer materials from a container into a process or other container. They may be electrically, hydraulically, or pneumatically powered depending on the working environment or application.
Explosion proof pumps prevent internal or external explosions by enclosing parts that could ignite either the transfer media or the surrounding atmosphere.
Fluid transfer pump systems are used in processing, water purification and desalination, or liquid handling applications.
Fountain pumps are designed to supply flow to fountains, devices used for aesthetic purposes and aeration in residential, commercial, and industrial applications
Fuel dispensing equipment dispenses and monitors all types of liquid and gaseous fuel.
Gear pumps use intermeshing gears to pump various types of liquids. Typically, one gear is the driver and the other is free wheeling. The gears have very tight tolerances so that the fluid being pumped cannot pass through them. Common uses for gear pumps include high pressure, metering, and flow control applications.
Grinder pumps are centrifugal pumps equipped with shredding systems to aid in the transport of solids filled media.
Hand pumps and foot pumps are manually operated pumps that can driven by hand or foot via a handle or lever.
Hydraulic pumps deliver high-pressure fluid flow to the pump outlet. Hydraulic pumps are powered by mechanical energy sources to pressurize fluid.
Impellers are rotating devices that force liquids, gases and vapors in a desired direction. They are widely used in pumping, blowing, and mixing applications.
Injection pumps are designed to inject measured amounts of fluid into a reservoir or production system.
Jet pumps are typically used for drawing water up from a well. These pumps can be used for either shallow or deep well configurations.
Lift stations contain pumps, valves, and electrical equipment necessary to pump water or wastewater from a low elevation to a high elevation.
Industrial liquid handling pumps are classified in many different ways, and are distinguished by the media pumped and the fluid motive mechanism (dynamic or displacement).
Magnetic drive pumps are sealless pumps that use a coaxial magnetic coupling to transmit torque to an impeller. A standard electric motor drives a set of permanent magnets that are mounted on a carrier or drive assembly.
Mechanical vacuum pumps and systems contain devices such as pistons, claws, scrolling spirals, and diaphragms to isolate and compress air.
Metering pumps are positive displacement pumps designed to dispense precise amounts of fluids and measured flow control.
Mud pumps are large, reciprocating pumps that are used to circulate the mud on a drilling rig. A typical mud pump is a double- or triple-acting, two- or three-cylinder piston pump whose pistons travel in replaceable liners and are driven by a crankshaft.
Peristaltic pumps use rotating rollers pressed against special flexible tubing to create a pressurized flow.
Piston pumps and plunger pumps are reciprocating positive displacement pumps that use a plunger or piston to move media through a cylindrical chamber.
Plastic pumps are designed to move fluids that would corrode or damage other types of pumps. They provide broad chemical resistance and are less costly and lighter in weight than metal pumps.
Positive displacement pumps use a mechanical force such as gears, bladders, pistons, plungers or diaphragms to push liquid through and out of the pump.
Progressing cavity pumps are a type of rotary positive displacement pump designed to transfer fluid or media with suspended solids or slurries from the suction side of the pump to the discharge side of the pump, from storage tanks or through pipelines.
Rotary lobe pumps are positive displacement (PD) pumps that use rotating lobes to direct flow.
Rotary vane vacuum pumps and systems move media through the pump using a rotating assembly in the pumping chamber. Typically, there are two or more rotating vanes that move the media from inlet to outlet. Rotary vane vacuum pumps are positive displacement pumps.
Sampling pumps are used to monitor liquids, air, and gases. They are usually portable and developed for specific tasks.
Sanitary pumps are used to transport and meter solutions, slurries, and colloids of food and agricultural materials in operations such as food processing that require cleanliness. There are four basic types of sanitary pumps: centrifugal, positive displacement, jet, and airlift.
Screw pumps are rotary, positive displacement pumps that have one or more screws to transfer fluids or materials along an axis.
Self-priming pumps create and maintain a sufficient vacuum level to draw fluid with no external assistance
Sewage pumps are used to pump effluents, semi-solids and small solids in liquids.
Slurry pumps increases the pressure of a liquid and solid particle mixture (slurry) to create flow.
Submersible pumps can be mounted into a tank with the liquid media. The pump’s motor is normally sealed in an oil filled cavity that is protected from contact with the liquid.
Sump pumps are used in applications where excess water must be pumped away from a particular area. Sump pumps generally sit in a basin or sump that collects this excess water.
Infusion or withdrawal syringe pumps provide high pressure and high accuracy for applications such as high performance liquid chromatography (HPLC). Used to deliver precise amounts of fluid at specific time intervals.
Trash pumps are designed to pump large amounts of water that contains hard and soft solids such as mud, leaves, twigs, sand, and sludge. Most devices are portable, heavy-duty centrifugal pumps that feature deeper impeller vanes and larger discharge openings than other pumps.
Triplex pumps are positive displacement, reciprocating pumps that are configured with three plungers. Triplex pumps are the most commonly used pump configuration for drilling and well service operations.
Turbine pumps are centrifugal pumps that use pressure in combination with a rotary mechanism to transfer fluid. They typically employ blade geometry, which causes fluid circulation around the vanes to add pressure from inlet to outlet.
Utility pumps are used in many applications such as dewatering low-lying areas, pool covers, and sumps. They are not designed for continuous use.
Vacuum pumps and vacuum generators provide sub-atmospheric pressure for a variety of industrial and scientific applications where a vacuum is required.
Wastewater pumps are used in the collection of sewage, effluent, drainage and seepage water.
Water pumps move water that does not contain suspended solids or particulates. Applications include water supply, irrigation, land and mine drainage, sea water desalination, and condensate transport.
Well pumps are most commonly used to bring water from wells and springs to the surface.
Every pump can be classified to some extent based on its mechanism or method of operation. For more information on these classifications and what they mean, see GlobalSpec's Pump Types page.
Pumps are made up of a variety of standard and nonstandard parts depending on their type and application. GlobalSpec's Pump Components page provides an overview of these different parts.
Understanding and interpreting performance specifications is a crucial part of correctly sourcing a pump for a specific system or application. For an overview of the most important pump specifications and what they mean, visit GlobalSpec's Pump Flow page.
Pumps may have a number of different features that add or enhance operation and functionality in a given application. Features include accessories, construction methods, materials, performance aspects, and power sources. GlobalSpec's Pump Features page contains a complete list and explanation of these different features.
A number of pump categories on GlobalSpec are organized based on pump application. Specifically, pumps can be classified based on a specific function they perform, or on the type of media that they handle. The Pump Applications page on GlobalSpec examines these different types of pumps.
Pump standards provide guidelines and consensus for the design and operation of pumping systems. A number of organizations provide these standards, some for specific industries or applications.
- American National Standards Institute (ANSI) / Hydraulic Institute (HI) – ANSI is a private non-profit organization that collects consensus standards on different types of products. HI creates product standards that define all aspects of pump products. In conjunction, ANSI/HI standards help manufacturers and purchasers make informed decisions on pump design to enhance performance.
- American Petroleum Institute (API) – API is the largest U.S. trade association for the oil and natural gas industry. They provide industry-specific standards for pumps in order to improve system efficiency and cost-effectiveness, comply with regulatory requirements, and ensure safety.
- ASTM International – Formerly known as the American Society for Testing and Materials, ASTM is a leading developer of international voluntary consensus standards. They provide a number of technical standards and specifications for different classifications of pumps.
- International Organization for Standardization (ISO) – ISO is the largest developer of voluntary international standards. They provide technical specifications and standards for numerous different types of pumps and components.
For definitions of commonly used terms used when dealing with pumps, see GlobalSpec's Pump Terminology page.