This section provides an overview for in-line pumps as well as their applications and principles. Also, please take a look at the list of 16 in-line pump manufacturers and their company rankings.
Table of Contents
An in-line pump is a pump that pumps liquid in a straight line.
The structure is relatively simple: a rotor built into the casing of the housing is rotated by a motor to move the liquid in the piping using centrifugal force. The pumping pressure can be increased by combining multiple internal rotors.
Compact and lightweight, it is designed for installation in minimal space. They are mainly used in water supply lines.
As the name "in-line pump" suggests, this pump enables the pumping liquid to be directed in a straight line.
Because they are directly connected to piping, they are compact, lightweight, and can be installed in a minimum amount of space.
They are widely used mainly in water supply lines, hot water supply lines from water heaters, and well water distribution lines. In addition, as a special application, they are sometimes incorporated into closed-loop circulating cleaning systems installed alongside pipes to clean the inside of water supply system pipes.
In-line pumps, which are directly connected to the piping, have a simple operating principle and relatively simple structure.
An impeller (rotor) is built into a sealed casing, and the rotor is rotated by a motor to transfer liquid using the centrifugal force generated.
The rotor can be stacked in two, three, or more stages to pump liquids at high pressure.
The rotor and rotating shaft operate in direct contact with the liquid inside the casing. Outside the casing, the rotor shaft is connected to a motor to rotate the rotor, and a mechanical seal is attached to the shaft to prevent liquid leakage from the connection.
Since mechanical seals and rotors deteriorate with prolonged use, regular maintenance is required. Currently, measures are being taken to extend pump life by using special corrosion-resistant materials for the mechanical seal and rotor themselves.
Various innovations have also been made in the design of the pump itself, making disassembly and maintenance easier.
*Including some distributors, etc.
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Xylem Inc. was incorporated in 2011 and is headquartered in Washington, District of Columbia. Xylem engages in the design, manufacture, and servicing of engineered products and solutions for the water and wastewater applications across global markets. Xylem operates through three segments: water infrastructure, applied water, and measurement & control solutions. Xylem’s water infrastructure segment offers numerous products such as water pumps, filtration, disinfection, and biological treatment equipment. Xylem’s applied water segment distributes pumps, valves, heat exchangers, controls, and dispensing equipment systems. Xylem’s measurement & control Solutions segment offers devices such as smart meters, networked communication devices, data analytics, test equipment, controls, sensor devices, and software and managed services.
Vaccon Co., Inc., now NORGREN, has roots dating back to 1947, was originally founded in 1972, and headquartered in Saline, Michigan. NORGREN is a manufacturer with expertise in die and automation design. NORGREN product lines include adaptive transforming tools, double blank analyzers, grippers & shovels, mounting solutions, carbon fiber structures, thread, stud, & nut detection, tool changers, vacuums, and modular tooling in industrial automation & cabots. NORGREN services include automation and tooling, die engineering, carbon fiber, and vacuum services as well as expertise to assist customers adapt old equipment for new applications or in new plants.
Brownlee-Morrow Company was founded in 152 and is headquartered in Birmingham, Alabama. Brownlee-Morrow is a full-line pump and fan distributor as well as service provider serving the municipal, industrial air, liquid handling, power generation, mining, automotive, chemical, pulp and paper, primary metals, marine, and poultry industries. Brownlee-Morrow services include repair and field service, system design, and well drilling. Brownlee-Morrow’s products include air handling & control, air pollution control, fans and blowers, pumps, pump accessories, seal products, macerators, softstarters, conveyors, sludge treatment, and filtration.
AB Industrial Equipment Company (AB Industrial) is headquartered in West Chester, Pennsylvania. AB Industrial distributes and services pumps, seals, and related products. Pump categories include varieties such as centrifugal, vertical, slurry, mag-drive, sanitary, and positive displacement pumps. Seals offerings include component seals, cartridge seals, face materials, elastomers, as well as electric motors. Strainers and valves include basket strainers, auto-cleaning, non-metallic, plug valves, relief valves, and triple duty valves among other offering categories.
Advanced Pump Company, Inc. was founded in 1988 and is headquartered in Woburn, Massachusetts. Advanced Pump Company is a distributor for pumps and related parts as well as electric motors fand maintenance and repair services and customized systems for industrial uses. Advanced Pump Company’s product categories include ai compressors, electric motors, pumps, and pump parts. Air compressors include air dryers, oil-less air compressors, piston compressors, rotary screw compressors, and rotary vane air compressors. Electric motors include general purpose, HVAC motors, and explosion proof motors. Pumps include AODD pumps, centrifugal, piston, gear, dosing, progressing cavity pumps, and more.
Pro Dyne Corporation (Pro Dyne) was established in 1985 as a manufacturers' representative agency covering the states of Pennsylvania, New Jersey, Delaware and Maryland. Pro Dyne is headquartered in Phoenixville, Pennsylvania. Pro Dyne is now a regional distribution company and handles fluid handling products both in the United States and abroad. Six primary product lines Pro Dyne represents are Scot Pump, Young Touchstone, Weg Motors, Delavan Nozzles, Rub Ball Valves, and Pro Dyne SS Pumps.
Ranking as of March 2023 GloballyDerivation Method
|1||Armstrong Fluid Technology||6.3%|
|2||Industrial Flow Solutions||6.3%|
|3||Thrush Company, Inc.||6.3%|
|4||Taco Comfort Solutions||6.3%|
|5||KSB SE & Co. KGaA||6.3%|
|6||Crane pumps & systems||6.3%|
|9||Titan Manufacturing, Inc.||6.3%|
|11||Halsted & Hoggan, Inc.||6.3%|
|12||Vaccon Co., Inc.||6.3%|
|13||Allied Pump Corp.||6.3%|
|15||Pro Dyne Corp.||6.3%|
|16||Advanced Pump Co., Inc.||6.3%|
Derivation MethodThe ranking is calculated based on the click share within the in-line pump page as of March 2023. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.
Number of Employees
Newly Established Company
Company with a History
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