Company lists · Data refreshed September 2026

Top 25 Positive displacement pump manufacturers based in the United States

Name: Positive displacement pump manufacturers based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 234 companies tracked

RevenueBase identified 234 positive displacement pump manufacturers headquartered in the United States as of September 2026 and tracks 33,272 professional contacts across them, including 14,206 with verified work emails. Houston is the largest hub.

This list covers positive displacement pump manufacturers headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, 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.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

234Companies

33,272Contacts tracked

14,206Verified emails

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The 25 largest positive displacement pump manufacturers based in the United States

Ranked by team size

Top 25 of 234 positive displacement pump manufacturers based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to positive displacement pump manufacturers: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Flowserve Corporation	Strong evidence	Irving, TX, United StatesHQ checked Sep 17, 2026	10001+	13,317 contacts →
	Strong evidence “Flowserve is one of the world's largest manufacturers of pumps, valves and seals with over employees across 50 countries.” Source: RevenueBase Database · checked Sep 17, 2026
2	Ingersoll Rand	Indirect evidence	Davidson, NC, United StatesHQ checked Sep 17, 2026	10001+	11,641 contacts →
	Indirect evidence “Ingersoll Rand Inc.(NYSE:IR), driven by an entrepreneurial spirit and ownership mindset, is dedicated to Making Life Better for our employees, customers, shareholders, and planet.” Source: RevenueBase Database · checked Sep 17, 2026
3	Psg, A Dover Company	Partial evidence	Downers Grove, IL, United StatesHQ checked Sep 17, 2026	1,001-5,000	861 contacts →
	Partial evidence “PSG® is the global pump, metering and dispensing solution expert, enabling the safe and efficient transfer of critical and valuable fluids that require optimal performance and…” Source: RevenueBase Database · checked Sep 17, 2026
4	Honeywell Sundyne	Strong evidence	Arvada, CO, United StatesHQ checked Sep 17, 2026	501-1,000	778 contacts →
	Strong evidence “Honeywell Sundyne manufactures highly reliable engineered pumps and compressors for global companies in upstream and midstream oil and gas production, refining, petrochemical…” Source: RevenueBase Database · checked Sep 17, 2026
5	Milton Roy, An Ingersoll Rand Business	Strong evidence	Ivyland, PA, United StatesHQ checked Sep 17, 2026	1,001-5,000	442 contacts →
	Strong evidence “Milton Roy is the world's leading manufacturer of controlled-volume metering pumps that set the industry standard for performance, accuracy and durability.” Source: RevenueBase Database · checked Sep 17, 2026
6	Peerless Pump Company	Strong evidence	Indianapolis, IN, United StatesHQ checked Sep 17, 2026	201-500	318 contacts →
	Strong evidence “Founded in 1923, Peerless Pump Company is a US-based manufacturer of horizontal and vertical water pumps for fire, industrial, and municipal applications.” Source: RevenueBase Database · checked Sep 17, 2026
7	GD Energy Products	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	274 contacts →
	Partial evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026
8	Colfax Fluid Handling	Partial evidence	Monroe, NC, United StatesHQ checked Sep 17, 2026	1,001-5,000	272 contacts →
	Partial evidence “Colfax Fluid Handling, is a world leader in the development, engineering, manufacturing, distribution, service and support of pumps and systems for demanding fluid handling…” Source: RevenueBase Database · checked Sep 17, 2026
9	Gorman-Rupp Pumps	Partial evidence	Mansfield, OH, United StatesHQ checked Sep 17, 2026	201-500	267 contacts →
	Partial evidence “Gorman-Rupp has been at the forefront of manufacturing high-performance, high-quality pumps and pumping systems that provide lasting service across various industries for more…” Source: RevenueBase Database · checked Sep 17, 2026
10	Aerzen USA	Strong evidence	Coatesville, PA, United StatesHQ checked Sep 17, 2026	51-200	170 contacts →
	Strong evidence “Aerzen USA is a wholly-owned subsidiary of Aerzener Maschinenfabrik GmbH, a manufacturer of positive displacement blowers, high-speed turbo blowers, compressors, and vacuum pumps.” Source: RevenueBase Database · checked Sep 17, 2026
11	Cornell Pump Company, LLC	Partial evidence	Clackamas, OR, United StatesHQ checked Sep 17, 2026	201-500	167 contacts →
	Partial evidence “EFFICIENT BY DESIGN since 1946: The story of Cornell starts in 1946 when five people working at Pacific Pump Company decided to head out on their own.” Source: RevenueBase Database · checked Sep 17, 2026
12	Liberty Pumps	Partial evidence	Bergen, NY, United StatesHQ checked Sep 17, 2026	201-500	158 contacts →
	Partial evidence “Headquartered in Bergen, NY, Liberty Pumps is a leading U.S.” Source: RevenueBase Database · checked Sep 17, 2026
13	Crane Pumps & Systems	Strong evidence	Piqua, OH, United StatesHQ checked Sep 17, 2026	501-1,000	151 contacts →
	Strong evidence “Crane Pumps & Systems is a world-class manufacturer of quality pumps and accessories offering a wide range of solutions and services for the municipal, residential building…” Source: RevenueBase Database · checked Sep 17, 2026
14	Haskel	Strong evidence	Burbank, CA, United StatesHQ checked Sep 17, 2026	201-500	144 contacts →
	Strong evidence “Haskel is the leading manufacturer of highly engineered pumps, gas compressors, valves and equipment designed to generate and control high pressures and deliver high-pressure…” Source: RevenueBase Database · checked Sep 17, 2026
15	MWI Pumps	Partial evidence	Deerfield Beach, FL, United StatesHQ checked Sep 17, 2026	201-500	120 contacts →
	Partial evidence “Moving Water Industries, MWI, is a pump manufacturing company located in Deerfield Beach, Florida.” Source: RevenueBase Database · checked Sep 17, 2026
16	Production And Midstream	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	120 contacts →
	Indirect evidence “Production and Midstream is a global leader in advanced pumping technologies and complete production process solutions for the energy industry.” Source: RevenueBase Database · checked Sep 17, 2026
17	Thompson Pump & Manufacturing Company	Indirect evidence	Port Orange, FL, United StatesHQ checked Sep 17, 2026	51-200	113 contacts →
	Indirect evidence “We understand your needs because we've been there.” Source: RevenueBase Database · checked Sep 17, 2026
18	Roper Pump Company	Indirect evidence	Commerce, GA, United StatesHQ checked Sep 17, 2026	51-200	92 contacts →
	Indirect evidence “The Leading Force Behind Liquids!” Source: RevenueBase Database · checked Sep 17, 2026
19	Txam Pumps	Strong evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	51-200	90 contacts →
	Strong evidence “TXAM Pumps designs, manufactures and sells chemical injection pumps for a wide range of applications in the Oil and Gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
20	Pumpworks	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	89 contacts →
	Partial evidence “Headquartered in Houston, Texas USA, PumpWorks knows what it takes to build a quality pump!” Source: RevenueBase Database · checked Sep 17, 2026
21	Fill-Rite	Partial evidence	Fort Wayne, IN, United StatesHQ checked Sep 17, 2026	201-500	87 contacts →
	Partial evidence “Fill-Rite offers the most rugged and reliable pumps, meters, and accessories for all your fuel and chemical dispensing needs.” Source: RevenueBase Database · checked Sep 17, 2026
22	Patterson Pump Company	Partial evidence	Toccoa, GA, United StatesHQ checked Sep 17, 2026	201-500	85 contacts →
	Partial evidence “Patterson has built a firm reputation of reliable pump installations worldwide - whether satisfying urban water and waste demands; harnessing and controlling ravaging floods…” Source: RevenueBase Database · checked Sep 17, 2026
23	Ampco Pumps Company	Strong evidence	Milwaukee, WI, United StatesHQ checked Sep 17, 2026	51-200	84 contacts →
	Strong evidence “Ampco Pumps Company manufactures the highest quality centrifugal and positive displacement pumps for the sanitary, marine and industrial markets.” Source: RevenueBase Database · checked Sep 17, 2026
24	Iwaki America INC	Strong evidence	Holliston, MA, United StatesHQ checked Sep 17, 2026	501-1,000	81 contacts →
	Strong evidence “Iwaki America Offers the Best Chemical Handling Pumps Iwaki America manufactures high-purity metering pumps, chemical delivery pumps, sealless, recirculation pumps and…” Source: RevenueBase Database · checked Sep 17, 2026
25	Unibloc Hygienic Technologies	Strong evidence	Kennesaw, GA, United StatesHQ checked Sep 17, 2026	51-200	75 contacts →
	Strong evidence “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…” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: positive displacement pump manufacturers. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names positive displacement pump manufacturers.
Partial evidence: Its own public description names part of positive displacement pump manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name positive displacement pump manufacturers. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 234 positive displacement pump manufacturers based in the United States

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Positive displacement pump manufacturers based in the United States at a glance

As of Sep 17, 2026

42.7%Verified-email coverage

142.2Average contacts per company

11-50Median size (employees)

6.0%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

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 234 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among positive displacement pump manufacturers, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “positive displacement pump manufacturers”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names positive displacement pump manufacturers), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among positive displacement pump manufacturers, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
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 listed company carries at least one verified work email, 14,206 across the full list. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names positive displacement pump manufacturers, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many positive displacement pump manufacturers are there based in the United States?

RevenueBase identified 234 positive displacement pump manufacturers headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Flowserve Corporation, headquartered in Irving, tops this list with the largest team on record.

Which city has the most positive displacement pump manufacturers?

Houston leads with 14 headquartered companies, followed by Mansfield (6) and Spring (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 14,206 verified decision-maker contacts tracked across these 234 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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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 Smart Search, 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.