Pump Intel
Types of pumps & vendors
Working map of pump categories and brands covered on this site, plus common OEMs referenced in market notes. Not every product line from every vendor is listed—use each brand page and OEM tools for current portfolios.
Rotodynamic (continuous flow)
Head and flow move together; common for lower-viscosity transfer and large flow rates.
- Centrifugal (incl. ANSI-style process)
- Griswold (PSG). Finish Thompson (sealless / mag-drive and related lines). Also common in channel: Flowserve, Goulds, Grundfos, Cornell, Gorman-Rupp (see Houston competitor map).
- Regenerative turbine
- Ebsray (PSG)—often LPG / volatile-liquid positioning.
- Submersible / dewatering (vendor tools)
- Selection calculators on Pump selection tools (e.g. Atlas Copco submersible/surface)—not a dedicated brand page here.
Positive displacement
Roughly fixed volume per cycle or revolution; strong for viscous fluids, metering, and steady flow vs. pressure.
- Air-operated double-diaphragm (AODD)
- Wilden, Sandpiper, Versa-Matic (via Warren Rupp), All-Flo, Almatec (PSG). OEM tools on selection / parts: ARO, Yamada, Graco Husky, etc.
- Electric double-diaphragm (EDD)
- Graco QUANTM and similar—links under Pump selection tools.
- Metering / dosing
- Neptune (PSG). Examples elsewhere: Milton Roy, LEWA (see Houston map).
- Sliding vane & gas compressors
- Blackmer (PSG).
- Eccentric disc
- Mouvex (PSG).
- Internal & external gear
- Viking Pump, Micropump (IDEX FMT).
- Peristaltic (hose)
- Abaque (PSG).
- Quaternary (four-piston) diaphragm — biopharma
- Quattroflow (PSG).
Also in the Pump School curriculum (rotary PD taxonomy)
The Pump School mirror walks through additional positive-displacement families that are not all broken out as separate vendor rows above—use these links for definitions and selection context.
- Reciprocating PD
- Contrasted with rotary PD on the family tree. Rotary pump family tree.
- Lobe (rotary / timed lobe)
- Common in sanitary and industrial paste-like fluids. Viking Pump (among others). Principles: Lobe pumps · selection notes in Comparing 4 types of PD pumps.
- Gerotor
- Related to internal-gear geometry. Gerotor pumps.
- Progressive cavity & screw
- Single-screw (often called progressive cavity) and timed multi-screw designs. Family tree (Figures 8–9); compare with rotary vs centrifugal.
- Circumferential piston
- PD family tree (Figure 7).
- Flexible member
- Flexible vane / tube / liner–style displacement. Family tree (Figure 5).
- Other liquid vane configurations
- Sliding vane for transfer is covered under Blackmer above; Pump School also discusses swinging, rolling, external, and flexible vane. Vane pumps.
Parent companies (context)
- IDEX Corporation — Fluid & Metering Technologies and related segments (FMT overview).
- Dover Corporation → Pumps & Process Solutions → PSG — portfolio of PSG brands above.
- Independents (parallel track) — Finish Thompson and similar non-IDEX / non-Dover lines.
Related on Pump Intel
- Org chart — IDEX vs Dover / PSG
- Pump lookup tools — selection & parts hubs
- Learning & training — Pump School, PDFs
- Dashboard — all brand pages