Company lists · Data refreshed September 2026
Top 25 Internal gear pump manufacturers based in the United States
RevenueBase identified 59 company matches for internal gear pump manufacturers associated with the United States as of September 2026 and tracks 1,455 professional contacts across them, including 607 with verified work emails. Houston is the largest hub.
This list covers company matches for internal gear pump manufacturers associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 30, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest internal gear pump manufacturers based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 274 contacts → | ||||
Exact match “For more than 160 years, GD Energy Products has pushed the industry forward with innovative pump designs, advanced manufacturing processes and a team dedicated to doing what’s…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 2 | 164 contacts → | ||||
Exact match “Our Lufkin Gears brand bring a deep history of industry-leading technology to demanding high-speed mechanical-drive, turbo machinery, and marine-propulsion applications.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 3 | 131 contacts → | ||||
Exact match “Nichols Portland manufactures pumping elements and pump assemblies for a wide range of applications within the automotive, on/off highway and industrial markets.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 4 | 92 contacts → | ||||
Exact match “The Leading Force Behind Liquids!” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 5 | 78 contacts → | ||||
Exact match “Permco is a leading manufacturer of high-pressure hydraulic gear pumps and motors, flow dividers, intensifiers, and accessories.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 6 | 75 contacts → | ||||
Exact match “Unibloc Hygienic Technologies is an industry leader in precision-engineered positive displacement pumps, Air-Operated Double Diaphragm pumps and drum pumps, as well as valves…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 7 | 37 contacts → | ||||
Exact match “Original Equipment Manufacturer of micro gear pumps and other fluid components and systems since 2002.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 8 | 37 contacts → | ||||
Exact match “Advanced Pressure Systems (APS) is a leading provider of high-pressure pumps, systems, and accessories for various industries, including oil and gas, mining, aerospace, and…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 9 | 33 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 10 | 25 contacts → | ||||
Exact match “Since 1953, Gorman-Rupp Industries (GRI Pumps) has specialized in the design and manufacturing of fluid pumps for the OEM market.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 11 | 23 contacts → | ||||
Exact match “Cross Hydraulics are in it for the Long Run Designed and engineered for premium equipment, Cross Manufacturing, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 12 | 22 contacts → | ||||
Exact match “Cascon fills a niche in the market for specialty hydraulic equipment by supplying custom engineered, positive displacement pumps, motors, and related hydraulic devices to OEM…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 13 | 20 contacts → | ||||
Exact match “Afton Pumps, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 14 | 18 contacts → | ||||
Exact match “Driven Components - Driven Tools - Driven to Succeed- Fluid Power (Hydraulic Motors)- Tool Products (Driven Tool Holders)- Mechanical (RA Bevel Gearboxes) A family-owned,100%…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 15 | 13 contacts → | ||||
Exact match “As a former division of David Brown, Radicon Drive Systems, Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 16 | 11 contacts → | ||||
Exact match “LobePro Rotary Pumps currently manufactures 13 models of positive displacement rotary lobe pumps divided into three series: S-Series (sludge/slurry and general use) pumps…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 17 | 11 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 18 | 10 contacts → | ||||
Exact match “Founded in 1988, Pumptec is headquartered in Minnesota serving customers across North America and overseas.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 19 | 10 contacts → | ||||
Exact match “Phoenix Pump Inc.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 20 | 9 contacts → | ||||
Exact match “For more than 130 years SPP Pumps has been a leading manufacturer of centrifugal pumps and associated systems, a global principal in design, supply and servicing of pumps, fire…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 21 | 9 contacts → | ||||
Exact match “For more than 30 years, Dixon Pumps has manufactured the highest quality high-volume positive-displacement transfer pumps in the industry.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 22 | 8 contacts → | ||||
Exact match “Pacer is the originator and recognized leading manufacturer of high performance centrifugal pumps molded from tough modern thermoplastics.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 23 | 8 contacts → | ||||
Exact match “Terzo Power Systems is the leader in the development and design of electrohydraulic pump systems designed for on- & off-highway mobile vehicles and industrial applications.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 24 | 7 contacts → | ||||
Exact match “Since 2001, PowerX International, LLC has been collaborating with its customers to design and supply hydraulic products and systems.” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
| 25 | 7 contacts → | ||||
Exact match “Guyan International, Inc.(dba Permco) is a leading manufacturer of high-pressure hydraulic gear pumps and motors, flow dividers, intensifiers, and accessories for use in the…” Recorded in the RevenueBase company graph · Sep 30, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “internal gear pump manufacturers”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 59 internal gear pump manufacturers based in the United States
See the full list, filter by size, metro and specialty, and access 607 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Internal gear pump manufacturers based in the United States at a glance
As of Sep 30, 2026Companies by employee count
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 59 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “internal gear pump manufacturers” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 607 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 30, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “internal gear pump manufacturers”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many internal gear pump manufacturers are there based in the United States?
RevenueBase identified 59 company matches for internal gear pump manufacturers associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
GD Energy Products tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most internal gear pump manufacturers?
Houston leads with 6 company records, followed by Charlotte (2) and Farmingdale (2).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 607 professional contacts with verified work emails tracked across these 59 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 30, 2026.
Ready to reach these companies? Verified emails and direct dials for all 59 internal gear pump manufacturers based in the United States. Start with a free account, no credit card.
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Internal gear pump manufacturers by geography
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Internal gear pump manufacturers based in Germany
- Internal gear pump manufacturers based in India
- Internal gear pump manufacturers based in Italy
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
Company intelligence · public preview
Top 25 internal gear pump manufacturers based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 59 matching company records for internal gear pump manufacturers based in the United States, with 1,455 tracked contacts and 607 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 internal gear pump manufacturers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | GD Energy Productsgdenergyproducts.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 274 contacts → |
“For more than 160 years, GD Energy Products has pushed the industry forward with innovative pump designs, advanced manufacturing processes and a team dedicated to doing what’s…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Lufkin Gearsbakerhughes.comHQ: Lufkin, TX, United StatesReported employees: 501-1,000 | Lufkin, TX, United States | 501-1,000 | Exact match | 164 contacts → |
“Our Lufkin Gears brand bring a deep history of industry-leading technology to demanding high-speed mechanical-drive, turbo machinery, and marine-propulsion applications.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Nichols Portland Incorporatednicholsportlandinc.com HQ: Portland, ME, United StatesReported employees: 501-1,000 | Portland, ME, United States | 501-1,000 | Exact match | 131 contacts → |
“Nichols Portland manufactures pumping elements and pump assemblies for a wide range of applications within the automotive, on/off highway and industrial markets.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Roper Pump Companyroperpumps.com HQ: Commerce, GA, United StatesReported employees: 51-200 | Commerce, GA, United States | 51-200 | Exact match | 92 contacts → |
“The Leading Force Behind Liquids!” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Permcopermco.com HQ: Streetsboro, OH, United StatesReported employees: 201-500 | Streetsboro, OH, United States | 201-500 | Exact match | 78 contacts → |
“Permco is a leading manufacturer of high-pressure hydraulic gear pumps and motors, flow dividers, intensifiers, and accessories.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Unibloc Hygienic Technologiesunibloctech.com HQ: Kennesaw, GA, United StatesReported employees: 51-200 | Kennesaw, GA, United States | 51-200 | Exact match | 75 contacts → |
“Unibloc Hygienic Technologies is an industry leader in precision-engineered positive displacement pumps, Air-Operated Double Diaphragm pumps and drum pumps, as well as valves…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Flight Works, INCflightworksinc.com HQ: Irvine, CA, United StatesReported employees: 11-50 | Irvine, CA, United States | 11-50 | Exact match | 37 contacts → |
“Original Equipment Manufacturer of micro gear pumps and other fluid components and systems since 2002.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Advanced Pressure Systemsadvancedpressuresystems.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 37 contacts → |
“Advanced Pressure Systems (APS) is a leading provider of high-pressure pumps, systems, and accessories for various industries, including oil and gas, mining, aerospace, and…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Micropump, INCmicropump.com HQ: Vancouver, WA, United StatesReported employees: 51-200 | Vancouver, WA, United States | 51-200 | Exact match | 33 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | GRI Pumps A Gorman-Rupp Companygripumps.com HQ: Bellville, OH, United StatesReported employees: 11-50 | Bellville, OH, United States | 11-50 | Exact match | 25 contacts → |
“Since 1953, Gorman-Rupp Industries (GRI Pumps) has specialized in the design and manufacturing of fluid pumps for the OEM market.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cross Manufacturing, INCcrossmfg.com HQ: Overland Park, KS, United StatesReported employees: 51-200 | Overland Park, KS, United States | 51-200 | Exact match | 23 contacts → |
“Cross Hydraulics are in it for the Long Run Designed and engineered for premium equipment, Cross Manufacturing, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Cascon, INCcasconpump.com HQ: Yarmouth, ME, United StatesReported employees: 11-50 | Yarmouth, ME, United States | 11-50 | Exact match | 22 contacts → |
“Cascon fills a niche in the market for specialty hydraulic equipment by supplying custom engineered, positive displacement pumps, motors, and related hydraulic devices to OEM…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Afton Pumps INCaftonpumps.comHQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 20 contacts → |
“Afton Pumps, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | VON Ruden Manufacturing, INCvonruden.com HQ: Buffalo, MN, United StatesReported employees: 11-50 | Buffalo, MN, United States | 11-50 | Exact match | 18 contacts → |
“Driven Components - Driven Tools - Driven to Succeed- Fluid Power (Hydraulic Motors)- Tool Products (Driven Tool Holders)- Mechanical (RA Bevel Gearboxes) A family-owned,100%…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Radicon Drive Systems, INCradicon.com HQ: Elgin, IL, United StatesReported employees: 51-200 | Elgin, IL, United States | 51-200 | Exact match | 13 contacts → |
“As a former division of David Brown, Radicon Drive Systems, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Lobepro Rotary Pumpslobepro.com HQ: Brunswick, GA, United StatesReported employees: 11-50 | Brunswick, GA, United States | 11-50 | Exact match | 11 contacts → |
“LobePro Rotary Pumps currently manufactures 13 models of positive displacement rotary lobe pumps divided into three series: S-Series (sludge/slurry and general use) pumps…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Hammelmann Corphammelmann.de HQ: Miamisburg, OH, United StatesReported employees: 11-50 | Miamisburg, OH, United States | 11-50 | Exact match | 11 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 | Pumptecpumptec.com HQ: Anoka, MN, United StatesReported employees: 11-50 | Anoka, MN, United States | 11-50 | Exact match | 10 contacts → |
“Founded in 1988, Pumptec is headquartered in Minnesota serving customers across North America and overseas.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Phoenix Pumpphoenixpump.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 10 contacts → |
“Phoenix Pump Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | SPP Pumps, Inc. USAspppumps.com HQ: Norcross, GA, United StatesReported employees: 51-200 | Norcross, GA, United States | 51-200 | Exact match | 9 contacts → |
“For more than 130 years SPP Pumps has been a leading manufacturer of centrifugal pumps and associated systems, a global principal in design, supply and servicing of pumps, fire…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Dixon Pumpsdixonpumps.com HQ: Bonita Springs, FL, United StatesReported employees: 11-50 | Bonita Springs, FL, United States | 11-50 | Exact match | 9 contacts → |
“For more than 30 years, Dixon Pumps has manufactured the highest quality high-volume positive-displacement transfer pumps in the industry.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Pacer Pumpspacerpumps.com HQ: Lancaster, PA, United StatesReported employees: 11-50 | Lancaster, PA, United States | 11-50 | Exact match | 8 contacts → |
“Pacer is the originator and recognized leading manufacturer of high performance centrifugal pumps molded from tough modern thermoplastics.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Terzo Power Systemsterzopower.com HQ: El Dorado Hills, CA, United StatesReported employees: 11-50 | El Dorado Hills, CA, United States | 11-50 | Exact match | 8 contacts → |
“Terzo Power Systems is the leader in the development and design of electrohydraulic pump systems designed for on- & off-highway mobile vehicles and industrial applications.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Powerx Internationalpowerxinternational.com HQ: Pewaukee, WI, United StatesReported employees: 11-50 | Pewaukee, WI, United States | 11-50 | Exact match | 7 contacts → |
“Since 2001, PowerX International, LLC has been collaborating with its customers to design and supply hydraulic products and systems.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Guyan International, INCguyaninternational.com HQ: Barboursville, WV, United StatesReported employees: 201-500 | Barboursville, WV, United States | 201-500 | Exact match | 7 contacts → |
“Guyan International, Inc.(dba Permco) is a leading manufacturer of high-pressure hydraulic gear pumps and motors, flow dividers, intensifiers, and accessories for use in the…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 59 company matches
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Internal gear pump manufacturers: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
59 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 59 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 30, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for internal gear pump manufacturers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many internal gear pump manufacturers did RevenueBase find based in the United States?
The saved snapshot records 59 matching company records, 1,455 tracked contacts and 607 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 30, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Internal gear pump manufacturers by geography
Cite this list
RevenueBase Data Team. Top 25 internal gear pump manufacturers based in the United States. Snapshot: September 30, 2026. https://revenuebase.ai/companies/internal-gear-pump-manufacturers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Internal gear pump manufacturers based in Germany
- Internal gear pump manufacturers based in India
- Internal gear pump manufacturers based in Italy
- AI companies based in the United States
- Cybersecurity companies based in the United States
- Manufacturing companies based in the United States
Company intelligence · public preview
Top 25 internal gear pump manufacturers based in the United States
RevenueBase records 59 matching company records for internal gear pump manufacturers based in the United States, with 1,455 tracked contacts and 607 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 30, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 internal gear pump manufacturers based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | GD Energy Productsgdenergyproducts.com HQ: Houston, TX, United StatesReported employees: 201-500 | Houston, TX, United States | 201-500 | Exact match | 274 contacts → |
“For more than 160 years, GD Energy Products has pushed the industry forward with innovative pump designs, advanced manufacturing processes and a team dedicated to doing what’s…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Lufkin Gearsbakerhughes.com HQ: Lufkin, TX, United StatesReported employees: 501-1,000 | Lufkin, TX, United States | 501-1,000 | Exact match | 164 contacts → |
“Our Lufkin Gears brand bring a deep history of industry-leading technology to demanding high-speed mechanical-drive, turbo machinery, and marine-propulsion applications.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Nichols Portland Incorporatednicholsportlandinc.com HQ: Portland, ME, United StatesReported employees: 501-1,000 | Portland, ME, United States | 501-1,000 | Exact match | 131 contacts → |
“Nichols Portland manufactures pumping elements and pump assemblies for a wide range of applications within the automotive, on/off highway and industrial markets.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Roper Pump Companyroperpumps.com HQ: Commerce, GA, United StatesReported employees: 51-200 | Commerce, GA, United States | 51-200 | Exact match | 92 contacts → |
“The Leading Force Behind Liquids!” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Permcopermco.com HQ: Streetsboro, OH, United StatesReported employees: 201-500 | Streetsboro, OH, United States | 201-500 | Exact match | 78 contacts → |
“Permco is a leading manufacturer of high-pressure hydraulic gear pumps and motors, flow dividers, intensifiers, and accessories.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Unibloc Hygienic Technologiesunibloctech.com HQ: Kennesaw, GA, United StatesReported employees: 51-200 | Kennesaw, GA, United States | 51-200 | Exact match | 75 contacts → |
“Unibloc Hygienic Technologies is an industry leader in precision-engineered positive displacement pumps, Air-Operated Double Diaphragm pumps and drum pumps, as well as valves…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Flight Works, INCflightworksinc.com HQ: Irvine, CA, United StatesReported employees: 11-50 | Irvine, CA, United States | 11-50 | Exact match | 37 contacts → |
“Original Equipment Manufacturer of micro gear pumps and other fluid components and systems since 2002.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Advanced Pressure Systemsadvancedpressuresystems.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 37 contacts → |
“Advanced Pressure Systems (APS) is a leading provider of high-pressure pumps, systems, and accessories for various industries, including oil and gas, mining, aerospace, and…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Micropump, INCmicropump.com HQ: Vancouver, WA, United StatesReported employees: 51-200 | Vancouver, WA, United States | 51-200 | Exact match | 33 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 10 | GRI Pumps A Gorman-Rupp Companygripumps.com HQ: Bellville, OH, United StatesReported employees: 11-50 | Bellville, OH, United States | 11-50 | Exact match | 25 contacts → |
“Since 1953, Gorman-Rupp Industries (GRI Pumps) has specialized in the design and manufacturing of fluid pumps for the OEM market.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Cross Manufacturing, INCcrossmfg.com HQ: Overland Park, KS, United StatesReported employees: 51-200 | Overland Park, KS, United States | 51-200 | Exact match | 23 contacts → |
“Cross Hydraulics are in it for the Long Run Designed and engineered for premium equipment, Cross Manufacturing, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Cascon, INCcasconpump.com HQ: Yarmouth, ME, United StatesReported employees: 11-50 | Yarmouth, ME, United States | 11-50 | Exact match | 22 contacts → |
“Cascon fills a niche in the market for specialty hydraulic equipment by supplying custom engineered, positive displacement pumps, motors, and related hydraulic devices to OEM…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Afton Pumps INCaftonpumps.com HQ: Houston, TX, United StatesReported employees: 51-200 | Houston, TX, United States | 51-200 | Exact match | 20 contacts → |
“Afton Pumps, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | VON Ruden Manufacturing, INCvonruden.com HQ: Buffalo, MN, United StatesReported employees: 11-50 | Buffalo, MN, United States | 11-50 | Exact match | 18 contacts → |
“Driven Components - Driven Tools - Driven to Succeed- Fluid Power (Hydraulic Motors)- Tool Products (Driven Tool Holders)- Mechanical (RA Bevel Gearboxes) A family-owned,100%…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Radicon Drive Systems, INCradicon.com HQ: Elgin, IL, United StatesReported employees: 51-200 | Elgin, IL, United States | 51-200 | Exact match | 13 contacts → |
“As a former division of David Brown, Radicon Drive Systems, Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Lobepro Rotary Pumpslobepro.com HQ: Brunswick, GA, United StatesReported employees: 11-50 | Brunswick, GA, United States | 11-50 | Exact match | 11 contacts → |
“LobePro Rotary Pumps currently manufactures 13 models of positive displacement rotary lobe pumps divided into three series: S-Series (sludge/slurry and general use) pumps…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Hammelmann Corphammelmann.de HQ: Miamisburg, OH, United StatesReported employees: 11-50 | Miamisburg, OH, United States | 11-50 | Exact match | 11 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 18 | Pumptecpumptec.com HQ: Anoka, MN, United StatesReported employees: 11-50 | Anoka, MN, United States | 11-50 | Exact match | 10 contacts → |
“Founded in 1988, Pumptec is headquartered in Minnesota serving customers across North America and overseas.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Phoenix Pumpphoenixpump.com HQ: Houston, TX, United StatesReported employees: 11-50 | Houston, TX, United States | 11-50 | Exact match | 10 contacts → |
“Phoenix Pump Inc.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | SPP Pumps, Inc. USAspppumps.com HQ: Norcross, GA, United StatesReported employees: 51-200 | Norcross, GA, United States | 51-200 | Exact match | 9 contacts → |
“For more than 130 years SPP Pumps has been a leading manufacturer of centrifugal pumps and associated systems, a global principal in design, supply and servicing of pumps, fire…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Dixon Pumpsdixonpumps.com HQ: Bonita Springs, FL, United StatesReported employees: 11-50 | Bonita Springs, FL, United States | 11-50 | Exact match | 9 contacts → |
“For more than 30 years, Dixon Pumps has manufactured the highest quality high-volume positive-displacement transfer pumps in the industry.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Pacer Pumpspacerpumps.com HQ: Lancaster, PA, United StatesReported employees: 11-50 | Lancaster, PA, United States | 11-50 | Exact match | 8 contacts → |
“Pacer is the originator and recognized leading manufacturer of high performance centrifugal pumps molded from tough modern thermoplastics.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Terzo Power Systemsterzopower.com HQ: El Dorado Hills, CA, United StatesReported employees: 11-50 | El Dorado Hills, CA, United States | 11-50 | Exact match | 8 contacts → |
“Terzo Power Systems is the leader in the development and design of electrohydraulic pump systems designed for on- & off-highway mobile vehicles and industrial applications.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Powerx Internationalpowerxinternational.com HQ: Pewaukee, WI, United StatesReported employees: 11-50 | Pewaukee, WI, United States | 11-50 | Exact match | 7 contacts → |
“Since 2001, PowerX International, LLC has been collaborating with its customers to design and supply hydraulic products and systems.” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | Guyan International, INCguyaninternational.com HQ: Barboursville, WV, United StatesReported employees: 201-500 | Barboursville, WV, United States | 201-500 | Exact match | 7 contacts → |
“Guyan International, Inc.(dba Permco) is a leading manufacturer of high-pressure hydraulic gear pumps and motors, flow dividers, intensifiers, and accessories for use in the…” Recorded description excerpt · September 30, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Internal gear pump manufacturers: dataset insights
September 30, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
59 records in the displayed employee bands.
0 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 59 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 30, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Questions about this company list
What does Exact match mean for internal gear pump manufacturers?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many internal gear pump manufacturers did RevenueBase find based in the United States?
The saved snapshot records 59 matching company records, 1,455 tracked contacts and 607 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 30, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Internal gear pump manufacturers by geography
Cite this list
RevenueBase Data Team. Top 25 internal gear pump manufacturers based in the United States. Snapshot: September 30, 2026. https://revenuebase.ai/companies/internal-gear-pump-manufacturers/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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