Supplier directory lookup

Where to find manufacturers, distributors, and market context. Use filters and cross-checks; no single source is complete.

Operational note. Links and coverage change. Use this page as a starting map for research, not a warranty of accuracy or completeness. Verify certifications, locations, and lines before commercial use.
On this page

1. Core industrial supplier directories (most important)

Thomasnet

Best overall source — start here.

https://www.thomasnet.com

GlobalSpec

Engineering-focused directory.

https://www.globalspec.com

IQS Directory

Clean categorized lists.

https://www.iqsdirectory.com

Manta

Large U.S. business database.

https://www.manta.com

2. Industry associations (high-quality lists)

Pump Manufacturers Association (PMA)

Official U.S. pump industry group. Members skew toward established manufacturers; relatively clean, credible lists.

https://pumps.org

Hydraulic Institute

Standards- and engineering-oriented. Includes major pump manufacturers and engineering companies; useful for technical context.

https://www.pumps.org/hydraulic-institute

3. Market & industry data sources

Not directories in the classic sense, but useful for who’s large and how segments break out:

Use these to identify major players and validate who shows up repeatedly across lists.

4. Trade show / exhibitor lists (very powerful)

Exhibitor lists = companies that are actively marketing in the channel. Often underrated vs static directories.

Typical mix: manufacturers, distributors, integrators. Search each show’s official exhibitor directory for the year you care about.

5. Government / classification databases (advanced)

NAICS 333911 — Pump and Pumping Equipment Manufacturing (verify current definitions).

Use for registered companies in the category and macro counts — not a substitute for commercial directories for sales targeting.

6. Additional industrial directories (secondary but useful)

Source Notes
Engineering360 Similar to GlobalSpec; strong for engineering sourcing.
Kompass International; can filter for U.S. pump companies.
IndustryNet Manufacturers and industrial suppliers.
MacRAE’s Blue Book Older; still useful for niche suppliers.

7. Legacy / historical (still relevant)

Thomas Register — original industrial directory (since 1898). Now part of the Thomasnet ecosystem; the modern entry point is Thomasnet above.

8. Product & industry category taxonomies (related intel)

Various classification trees used in retail, procurement, industry reporting, and customs—not pump-specific, but useful when you align SKUs, bids, imports, or “what category is this product?” across systems.

Retail / shopping-style taxonomies

https://www.google.com/basepages/producttype/taxonomy-with-ids.en-US.txt

https://support.google.com/merchants/answer/6324436

https://developer-docs.amazon.com/sp-api/

Industrial / procurement-style classifications

https://www.unspsc.org/

https://www.gs1.org/services/gpc-browser

U.S. “industry” (not per-SKU product tree)

https://www.census.gov/naics/

Import / tariff line classification

Product grouping for customs—not a retail browse tree.

https://hts.usitc.gov/

How to use these (best strategy)

If you want a complete pump company picture, build in layers:

  1. Core list — Thomasnet (main breadth)
  2. Clean manufacturer list — PMA, Hydraulic Institute
  3. Fill gaps — IQS, GlobalSpec
  4. Hidden distributors — Manta, Google Maps (local verification)
  5. Validate “active” — trade show exhibitor lists, recent news, site freshness

Example target structure (what you’re building toward)

Bucket Examples (illustrative)
Manufacturers IDEX, Dover / PSG, Flowserve, Xylem
Distributors DXP Enterprises, Cummins-Wagner, SunSource
Regionals Crane Engineering, Hayes Pump, A-L Equipment

Key takeaway

There is no single directory with everything.

The closest practical pair is Thomasnet (coverage) plus PMA (credible manufacturer tier). Combine both, then cross-check with associations, shows, and local sources for a complete market view.