10 Leading Chemical Pump Manufacturers in 2026

Choosing a chemical pump manufacturer starts with the liquid and the duty, not a brand ranking. Corrosion, temperature, pressure, solids, leakage risk, and maintenance access can point to very different pump designs.

This guide profiles 10 established suppliers with documented chemical-process pump offerings. It includes manufacturers of ANSI and ISO process pumps, API process pumps, lined pumps, and sealless centrifugal pumps. The list is an editorial comparison based on product relevance and publicly available technical information. It does not rank companies by chemical-pump revenue or global market share; comparable 2026 figures are not publicly available across these suppliers.

The 10 manufacturers at a glance

Manufacturer	Chemical-pump strengths	Example product families
Flowserve	Broad portfolio spanning ANSI/ISO chemical, magnetic-drive, and API process pumps	Durco Mark 3, INNOMAG, HPX
ITT Goulds Pumps	ANSI chemical-process pumps and engineered process-pump lines	3196, 3296
KSB	Standardized chemical, heavy-duty process, and sealless pumps	MegaCPK, CPKN, RPH, Magnochem
Sulzer	ANSI, ISO, and API process pumps for demanding industrial service	CPE, AHLSTAR, API 610 ranges
Ruhrpumpen	ANSI/ASME chemical pumps plus ISO and API process designs	CPP, CPO, CRP
EBARA	ISO 2858/5199 industrial process pumps for chemical and general industry	GSO
Sundyne	Chemical magnetic-drive and heavy-duty API process pumps	HMD, Marelli
Richter Chemie-Technik	Fluoropolymer-lined pumps for aggressive and corrosive liquids	MNK, MNKA, SCK
HERMETIC	Canned-motor pumps for hazardous, volatile, or high-temperature services	CN/CNF, CNP, CAM
Klaus Union	Magnetic-drive centrifugal pumps for leak-sensitive chemical and petrochemical duties	SLM, SLM AP

1. Flowserve

Flowserve is a strong choice when a plant needs multiple pump technologies from one supplier. Its chemical and petrochemical portfolio includes Durco Mark 3 ANSI and ISO chemical-process pumps, polymer-composite pumps, magnetic-drive designs, and API process pumps. That range makes it relevant to both general chemical transfer and higher-pressure or higher-temperature process services.

Best fit to investigate: plants standardizing across conventional sealed, lined, and sealless pump duties. Verify the exact product series, materials, and service support available in the project region.

2. ITT Goulds Pumps

ITT Goulds is closely associated with ANSI process pumps. The 3196 is a widely recognized ANSI chemical-process pump family, and Goulds’ product guide also lists related process configurations such as high-temperature and low-flow variants. Buyers evaluating a 3196 installation should still confirm the pump size, hydraulic selection, materials, seal arrangement, and replacement-part fit for the specific duty.

Best fit to investigate: ANSI B73.1 process-pump applications and plants with an installed Goulds base.

3. KSB

KSB offers standardized chemical pumps as well as heavy-duty API process pumps and sealless options. Its MegaCPK and CPKN lines address chemical and petrochemical service, while RPH covers API 610 process duties. This range can suit plants that need to compare a standardized chemical pump with an engineered process-pump design.

Best fit to investigate: chemical and petrochemical plants with a mix of standard transfer and higher-severity process duties.

4. Sulzer

Sulzer’s process-pump portfolio spans ANSI/ASME B73.1, ISO 5199, and API 610 ranges. Its CPE ANSI pump is designed for chemical-process applications, while other ranges cover broader industrial and heavy-duty services. This makes standards and duty classification an important part of any comparison: an ANSI process pump and an API 610 pump are designed around different service requirements.

Best fit to investigate: plants comparing ANSI process-pump replacements with ISO or API equipment for more demanding services.

5. Ruhrpumpen

Ruhrpumpen offers ANSI/ASME B73.1 chemical process pumps, including CPP and CPO, alongside ISO and API process-pump families. The company’s chemical-market materials describe applications such as acid and alkyl service, sulfuric and acetic acid, amine treating, and liquid CO₂. Those applications require careful material and seal selection; a product-family match alone does not establish compatibility with a specific concentration or temperature.

Best fit to investigate: ANSI pump users and process plants needing a range of chemical-duty centrifugal designs.

6. EBARA

EBARA’s GSO is an end-suction industrial process pump designed to ISO 2858 and ISO 5199. EBARA identifies chemical and petrochemical applications and publishes operating ranges for flow, head, temperature, pressure, and materials. Buyers should compare those published limits with the actual duty and confirm the offered configuration in their market.

Best fit to investigate: ISO process-pump applications, including chemical and general industrial services.

7. Sundyne

Sundyne combines magnetic-drive pumps for chemical duties with heavy-duty API process pumps. Its Marelli range includes API 610/ISO 13709 process-pump designs for refinery, petrochemical, and industrial services. As with other engineered-pump suppliers, the selection should be based on the operating point and process conditions rather than the family name alone.

Best fit to investigate: chemical plants with both leakage-sensitive duties and high-energy process services.

8. Richter Chemie-Technik

Richter specializes in lined pumps and valves for corrosive and demanding liquids. Its published pump range includes mechanically sealed and magnetic-drive designs, including ASME/ANSI configurations. Fluoropolymer linings can be useful where metal selection is difficult, but the actual lining, temperature limit, permeation risk, solids content, and mechanical conditions must be reviewed for the fluid and service.

Best fit to investigate: corrosive chemical duties where a lined pump or sealless design may be appropriate.

9. HERMETIC

HERMETIC focuses on canned-motor pumps and other hermetically sealed technologies. Its product information describes chemical-pump designs to ISO 2858 and API 685, including options for hazardous or potentially explosive service and elevated temperatures. These designs can reduce dynamic-seal leakage paths, while requiring the user to assess the pump’s internal circulation, cooling, monitoring, and maintenance requirements.

Best fit to investigate: toxic, volatile, flammable, or otherwise leak-sensitive liquids where a canned-motor design is suitable.

10. Klaus Union

Klaus Union offers magnetic-drive centrifugal pumps for chemical, petrochemical, refinery, and tank-farm service. Its product range includes API 685 and other process configurations, with published operating envelopes that vary by series. Match the specific model to the required flow, head, pressure, temperature, solids content, and material compatibility.

Best fit to investigate: demanding sealless duties where containment and process conditions are central to pump selection.

How to compare chemical pump manufacturers

Before shortlisting a supplier, define the service and compare the pump against it:

Identify the governing standard. ANSI/ASME B73.1, ISO 5199, API 610, and API 685 cover different pump designs and service expectations. Do not assume that dimensional similarity means the pumps have the same construction or performance.
Document the liquid. Record composition, concentration, temperature, viscosity, density, vapor pressure, solids, and any contaminants. Material suitability depends on the full chemistry and operating conditions.
Confirm the duty point. Compare required flow and total head with the manufacturer’s curve. Check operating range, NPSH margin, driver power, and the expected operating cases.
Choose the sealing approach. Mechanical seals, magnetic drives, and canned motors have different leakage, cooling, monitoring, and maintenance considerations.
Check support and lifecycle needs. Confirm local service coverage, spare-parts availability, inspection documentation, and the plant’s preferred maintenance practices.

For an ANSI replacement, verify dimensions and interfaces separately from hydraulic performance, materials, seal-chamber details, and operating limits. ASME B73.1 standardizes important dimensions and design features; it does not make every internal component or pump curve interchangeable.

Which manufacturer should you choose?

There is no universal winner for every chemical service. A conventional ANSI process pump, a corrosion-resistant lined pump, and a sealless canned-motor pump solve different problems. Start with the liquid, duty point, applicable standard, leakage requirements, and available maintenance support. Then compare specific pump models and configurations.

If you are replacing an existing ANSI pump, start with the pump model and duty details so the replacement can be reviewed for fit and service conditions.

Frequently asked questions

What is the best chemical pump manufacturer?

The best supplier depends on the liquid, operating conditions, applicable standard, sealing requirements, and service support available for the plant. A broad portfolio does not mean every product family fits every chemical duty.

Are ANSI chemical pumps interchangeable between manufacturers?

ASME B73.1 defines standardized dimensions and design features for ANSI process pumps, which can support dimensional interchangeability. Confirm the specific size and interface, and separately verify hydraulics, materials, seal arrangement, and operating limits before replacing a pump or component.

When should a plant consider a sealless chemical pump?

Magnetic-drive and canned-motor pumps may be considered when leakage containment is a key requirement. Selection still depends on the liquid, temperature, pressure, solids, cooling or internal-circulation needs, and maintenance plan.

Does this list rank manufacturers by market share?

No. It is an editorial shortlist based on publicly documented product relevance and application coverage. Comparable 2026 chemical-pump revenue or market-share data was not found for all manufacturers.

Sources

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