Gorman-Rupp Company
Corporate brand
UnclaimedAmerican manufacturer of pumps and engineered pumping systems for water, wastewater, industrial, construction, agricultural, petroleum, fire-protection, and original-equipment applications.
Last updated August 24, 2026
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Overview
The Gorman-Rupp Company is an American manufacturer of pumps and pumping systems headquartered in Mansfield, Ohio. Founded in 1933 by J.C. Gorman and Herb Rupp, the company began with a simplified self-priming centrifugal-pump design that became the basis of its early product offering. Over time, Gorman-Rupp broadened its engineering and manufacturing activities to serve a wide range of fluid-handling requirements rather than concentrating on a single pump category. The company’s products are used in municipal water and wastewater infrastructure, sewage handling, industrial processes, construction dewatering, agriculture, petroleum applications, fire protection, and original-equipment-manufacturer systems. Its portfolio includes several pump architectures and related packaged systems, including self-priming and standard centrifugal pumps, submersible pumps, rotary gear and rotary vane pumps, priming-assisted units, hydraulic piston pumps, vertical turbine pumps, engine-driven diaphragm pumps, axial-flow and mixed-flow pumps, bellows metering pumps, oscillating pumps, packaged lift stations, and booster stations. A significant early turning point came during the Second World War, when the company received contracts from the United States military. The wartime work encouraged the development and production of specialized pumping equipment and helped expand the company’s capabilities. Gorman-Rupp subsequently entered the post-war period with a more diversified product range and a broader customer base, supporting continued growth in municipal, industrial, construction, and other markets. Gorman-Rupp operates as a publicly traded company on the New York Stock Exchange under the symbol GRC. Its business is primarily industrial and business-to-business: customers generally select equipment according to flow, pressure, solids-handling, priming, materials, power-source, installation, and duty-cycle requirements. This places the company in the engineered equipment and fluid-management sector, where product reliability, application support, lifecycle performance, and compatibility with existing infrastructure are important elements of competition. The company’s portfolio spans individual pumps as well as packaged and system-oriented solutions. Lift stations and booster stations extend the offering beyond standalone equipment into municipal and commercial pumping infrastructure. Engine-driven and other specialized configurations allow the products to be used where electrical power, installation conditions, or operating environments impose additional constraints. The company also supplies pumps for OEM integration, making its products components within larger machinery or process systems. Public reference material identifies Scott King as the company’s chief executive officer. A reference for 2021 reported sales of $378.3 million; that figure is historical and should not be treated as a current financial result. Gorman-Rupp remains an active, publicly listed pump manufacturer with a product scope centered on water movement, wastewater handling, fluid transfer, dewatering, and related industrial applications.
History
Gorman-Rupp was established in 1933 in the United States by J.C. Gorman and Herb Rupp. The founders’ initial product concept centered on a simplified self-priming centrifugal pump. Self-priming capability is significant in applications where a pump must begin operation without extensive manual priming arrangements, and the design gave the young company a practical foundation in fluid-handling equipment. During the Second World War, Gorman-Rupp obtained contracts from the United States military. The wartime relationship exposed the company to specialized pumping requirements and contributed to the expansion of its manufacturing and engineering capabilities. The company’s product range broadened beyond its initial design, and the development of additional specialized pumps supported growth after the war. In the post-war period, Gorman-Rupp diversified its customer and application base. Its equipment came to serve municipal water and wastewater systems, sewage operations, industrial facilities, construction sites, agricultural users, petroleum-related applications, fire-protection systems, and OEM customers. This expansion placed the company in multiple segments of the pump market and reduced its dependence on a single type of installation or end user. The company’s later portfolio developed into a broad group of pump technologies and packaged systems. Products referenced in company descriptions and encyclopedia material include self-priming and standard centrifugal pumps, submersible pumps, rotary gear pumps, priming-assisted pumps, hydraulic piston pumps, vertical turbine pumps, engine-driven diaphragm pumps, axial-flow and mixed-flow pumps, rotary vane pumps, bellows metering pumps, oscillating pumps, packaged lift stations, and booster stations. These categories address different combinations of fluid characteristics, pressure and flow requirements, power sources, installation settings, and solids-handling needs. Gorman-Rupp’s business model is primarily industrial and institutional. Municipalities and contractors may use its equipment for water, sewage, stormwater, or dewatering projects; industrial and petroleum customers may require pumps for process or transfer duties; and OEM customers may integrate pumps into larger systems. Packaged lift stations and booster stations broaden the company’s role from supplying standalone pumps to providing equipment used in complete pumping installations. Gorman-Rupp is headquartered in Mansfield, Ohio, and trades publicly on the New York Stock Exchange under the ticker GRC. Reference material identifies Scott King as chief executive officer. A published reference for 2021 reported sales of $378.3 million, providing a historical indication of the company’s scale but not a current financial figure. The company remains active and is positioned as a diversified manufacturer serving water movement, wastewater, fluid transfer, dewatering, and related industrial markets.
- 2021
Reported annual sales of $378.3 million
[1]Reference material reported sales of $378.3 million for 2021 and described Gorman-Rupp as one of the larger pump manufacturers in the United States.
- 1933
Company founded
[1]J.C. Gorman and Herb Rupp founded the company and based its early product line on a simplified self-priming centrifugal-pump design.
Second World War military contracts
[1]The company received contracts from the United States military during the Second World War, encouraging the production of specialized pumping equipment and contributing to later diversification.
Products and positioning
A diversified industrial pump manufacturer focused on dependable fluid-handling equipment and packaged pumping systems for municipal, wastewater, industrial, construction, agricultural, petroleum, fire-protection, and OEM applications.
Centrifugal pumps
Self-priming centrifugal pumps
A foundational Gorman-Rupp product category, self-priming centrifugal pumps are designed to establish or restore prime without requiring the same manual priming arrangements as conventional centrifugal installations. They are relevant to municipal, wastewater, construction, and general fluid-transfer duties where operating conditions can introduce air or interrupt the liquid column.
Centrifugal pumps
Standard centrifugal pumps
Standard centrifugal pumps provide continuous fluid movement through the conversion of rotating impeller energy into flow and pressure. They serve as general-purpose equipment across water, industrial, agricultural, construction, and other applications, with configuration selected according to capacity, head, fluid, materials, and installation requirements.
Submersible pumps
Submersible pumps
Submersible pumps are intended to operate in or near the liquid being handled, making them suitable for installations where a surface-mounted pump and suction arrangement would be impractical. Within Gorman-Rupp’s stated markets, this category is relevant to sewage, wastewater, drainage, dewatering, and construction applications.
Positive-displacement pumps
Rotary gear pumps
Rotary gear pumps move liquid through the controlled displacement created by rotating gears. They are used where a positive-displacement operating principle is appropriate, including selected industrial, petroleum, and fluid-transfer duties. The required configuration depends on viscosity, pressure, materials, speed, and compatibility with the pumped medium.
Specialized pumping equipment
Priming-assisted pumps
Priming-assisted pumps incorporate equipment or arrangements intended to support reliable pump startup and continued operation when air entrainment or suction conditions make conventional operation difficult. They address installation-specific requirements in municipal, construction, industrial, and related fluid-handling environments.
Positive-displacement pumps
Hydraulic piston pumps
Hydraulic piston pumps use reciprocating piston action to move fluid and develop pressure. This operating principle can serve specialized applications requiring controlled displacement or pressure characteristics. Selection depends on the liquid, required flow, pressure, duty cycle, and system design.
Vertical pumps
Vertical turbine pumps
Vertical turbine pumps are arranged with the pumping elements and shaft oriented vertically. This format is commonly associated with installations drawing from wells, sumps, tanks, or other deep or space-constrained sources. Gorman-Rupp identifies the category within its broader offering for water and industrial pumping applications.
Diaphragm pumps
Engine-driven diaphragm pumps
Engine-driven diaphragm pumps combine a diaphragm pumping mechanism with an engine power source. The configuration can be useful at construction, emergency, drainage, or remote sites where electrical power is unavailable or unsuitable. Application choice depends on fluid properties, solids content, required capacity, and operating conditions.
Flow pumps
Axial-flow and mixed-flow pumps
Axial-flow and mixed-flow pumps are designed for high-volume fluid movement using flow paths that differ from conventional radial centrifugal designs. They can address water-management and infrastructure applications in which large flow rates and the relationship between head and capacity are central to equipment selection.
Rotary pumps
Rotary vane pumps
Rotary vane pumps use sliding vanes within a rotating assembly to create fluid displacement. They are included in Gorman-Rupp’s specialized pump portfolio and may be selected for suitable transfer or industrial duties according to viscosity, pressure, materials, speed, and fluid compatibility.
Metering pumps
Bellows metering pumps
Bellows metering pumps are intended for controlled dosing or metering of fluids. Their role is distinct from general bulk-transfer pumps because accurate, repeatable delivery and material compatibility are important considerations. They are applicable to specialized industrial or process-fluid systems where metering is required.
Specialized pumps
Oscillating pumps
Oscillating pumps use reciprocating or oscillating motion to move fluid. They form part of the company’s specialized product range and are selected for applications in which that motion and associated flow characteristics fit the process or installation requirements.
Packaged pumping systems
Packaged lift stations
Packaged lift stations combine pumping equipment and related station components into a system intended to move wastewater or other fluids from lower to higher elevations. They extend Gorman-Rupp’s offering beyond individual pumps and support municipal, commercial, and infrastructure installations.
Packaged pumping systems
Booster stations
Booster stations are packaged systems used to increase or maintain pressure and flow within a distribution or process network. They may serve water, municipal, commercial, or industrial infrastructure, with the final configuration determined by system demand, operating pressure, controls, and installation conditions.
Recent events
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