Couch Pumps - An MWI Pumps Company
Formerly A Division of Allis-Chalmers Corporation
MWI Couch Pumps Maintenance & Repair Services
MWI Pumps now provides maintenance services on all existing Lineshaft Couch Pumps including engineering, manufacturing of custom parts, maintenance and repair of existing pumps in the field.
History of Couch Pumps

Founded in 1917 by Roy O. Couch, P.E., the Couch Manufacturing Company became a pioneer in the production of axial flow lineshaft pumps. Originally designing everything from hydroelectric turbines to steel-hulled boats, the company shifted its focus in the 1930s to high-capacity axial flow pumps that would help transform Florida’s sugar cane fields, orange groves, and flood-prone cities.
Couch pumps became known for their durability and innovation, with some models reaching up to 12 feet in diameter and pumping as much as 800,000 gallons per minute. With early deliveries made by Ford Model “A” trucks, Couch earned a reputation for excellence and reliability that would span generations and continents—from flood protection in Texas and Louisiana to aquaculture operations in Central America and cooling systems in Asia.
In 1977, the company was acquired by Allis-Chalmers Corporation, introducing mixed flow pump technology to complement the Couch axial flow product line. Just six years later in 1983, MWI Corporation—an American-owned pump manufacturer founded in 1926—acquired the Grant, Florida division of Allis-Chalmers, which was formerly known as Couch Pump Company.
Recognizing the value of the Couch legacy, MWI reinstated the Couch brand name on all facilities and products in Grant, Florida, proudly continuing the company’s commitment to pump performance, quality, and service. Although the Grant, FL location has since moved to MWI’s Rental and Repair facilities in Vero Beach, FL MWI continues the repair and maintenance of more than 8,000 Couch pumps that remain in active operation around the world.
Ongoing Support for Couch Pumps
MWI Pumps continues to support the entire legacy of Couch Pumps with full-service maintenance, repair, and manufacturing capabilities. Whether your pump was installed decades ago or you’re operating a multi-pump flood control system, MWI has the in-house engineering expertise, original schematics, and Florida-based manufacturing facilities to produce exact-fit parts and deliver top-tier service.
We offer:
- Field service, inspections, and emergency repairs
- OEM replacement parts and reverse engineering capabilities
- Complete rebuilds and performance upgrades
- Long-term pump maintenance and operational support
If your operations rely on Couch pumps—keep them running with the team who knows them best.
About MWI Couch Lineshaft Pumps
MWI Couch lineshaft pumps were designed for flexibility, performance, and durability. These custom-engineered pumps could be installed in vertical, horizontal, or angled configurations, with optional double discharge elbows or two-way flow systems. Pumps could also be constructed using special alloys, including stainless steel, to handle challenging environments.
Couch Pumps Installation Examples
- Flood Control: Five 96” pumps (250,000 GPM each) installed in a Texas coastal city
- Hurricane Protection: 72” mixed flow pump (170,000 GPM) in a Louisiana flood control station
- Stormwater Management: Three 72” pumps (150,000 GPM each) in California’s NEMDC pump station
- Everglades Conservation: Four 42” pumps (85,000 GPM each) protecting wildlife habitat
- Aquaculture: Two 30” pumps (30,000 GPM each) supporting a Central American farm
- Agriculture: Four pumps ranging from 12″ to 24″ assisting with citrus irrigation in Florida










Need Service or Parts for a Couch Pump?
Let MWI Pumps be your go-to partner for restoring or optimizing your Couch lineshaft pumps. Whether you need urgent service or long-term support, our team stands ready to help you protect your investment and keep the water flowing.
