Chemical pumps Manufacturers online

Chemical pumps are special pumps that are used in the chemical, petrochemical, pharmaceutical, food technology, semiconductor production, water treatment and many other industries for pumping, dosing or circulating aggressive, corrosive, toxic or high-purity media.

Due to their special design, materials and safety requirements, they perform tasks that normal industrial pumps cannot.

Below you will find the operating principle and types of chemical pumps, their areas of application and their advantages:

How chemical pumps work:

The way a chemical pump works depends on the type of pump in question, yet they all perform basic tasks:

1. Movement of the medium:
   A flow of material is established through mechanical, kinetic or volumetric displacement.
2. Material protection:
   The pump must be designed so that aggressive or contamination-critical substances do not attack the components.
3. Tightness:
   Since numerous media are hazardous, environmentally critical or hazardous to health, chemical pumps must meet high tightness requirements, often through hermetic systems such as magnetic couplings or canned motors.
4. Process safety:
   Valves, monitoring systems, pressure and temperature controls prevent damage to the system and personnel.

Chemical pumps essentially work according to two physical principles: Displacement or flow acceleration. The choice depends on the medium, the pressure requirement and the desired flow rate.

Types of chemical pumps:

1. Centrifugal pumps:
   These are the most commonly used chemical pumps. The medium is accelerated and set in motion by a rotating impeller.
   They are suitable for large volume flows, moderate pressures and low-viscosity media.
   Magnetically coupled centrifugal pumps are particularly popular, as they operate leak-free and do not require conventional seals.
2. Magnetic drive pumps:
   These pumps do not have a direct shaft connection between the motor and impeller.
   The torque is transmitted contactlessly via magnets.
   They are completely leak-proof and therefore ideal for hazardous, toxic or high-purity substances.
3. Canned motor pumps:
   The motor and hydraulics are hermetically separated from each other, creating a completely sealed system.
   They are often used in the pharmaceutical, semiconductor or chemical industries, where the strictest purity and safety requirements apply.
4. Positive displacement pumps:
   These include piston, diaphragm and peristaltic pumps.
   They work by periodically changing volume and are perfect for viscous, particle-bearing, sensitive or highly viscous liquids.
   Diaphragm pumps are particularly suitable for toxic or abrasive media, as they are completely sealed on the media side.
5. Dosing pumps:
   These pumps deliver precisely defined quantities of a medium and are therefore indispensable in chemical dosing, neutralization or process control.
   Diaphragm dosing pumps are widely used as they offer very high accuracy and media compatibility.
6. Hose pumps (peristaltic pumps):
   The medium only comes into contact with the hose, resulting in maximum chemical resistance.
   Ideal for sensitive, pasty or abrasive substances.
7. Drum and hand pumps:
   These mobile pumps are used to safely remove small quantities from canisters or drums:
   These pumps are often used for laboratory or workshop work.

Areas of application for chemical pumps:

Chemical pumps are used wherever media needs to be transported safely and reliably. Typical applications include

1. Pumping aggressive acids and alkalis

2. Dosing chemicals in water and waste water systems

3. Circulation in reactors in chemical or pharmaceutical production

4. Conveying corrosive media in metal finishing

5. Transport of solvents, fuels or petrochemical intermediates

6. Supply of clean room processes in the semiconductor or food industry

7 Circulation in thermal processes, heating and cooling systems

8. Conveying explosive media in ATEX zones

The variety of applications explains the wide range of pump types and material variants.

Advantages of chemical pumps:

• High chemical resistance: even extremely aggressive media can be handled safely thanks to the use of corrosion-resistant metals, stainless steels, plastics or special alloys.
• Safe and reliable leak-tightness: Magnetic drive pumps, canned motor pumps and diaphragm pumps are almost completely leak-tight - a decisive factor in protecting people and the environment.
• Long service life and low maintenance: Special bearings, robust materials and maintenance-free sealing concepts significantly reduce breakdowns and maintenance costs.
• Wide variety for different process requirements: From high flow rates to ultra-fine dosing - there is a suitable pump technology for every application.
• Suitability for sensitive or critical media: Sensitive biomaterials, viscous media or abrasive liquids can be conveyed gently and reliably.
• Energy-efficient pumping technology: Modern chemical pumps are optimized for high efficiency, which reduces energy consumption and lowers operating costs.
• High process and operational safety: Monitoring systems, ATEX certifications and special protective mechanisms allow chemical pumps to be operated reliably in sensitive industrial environments.

Chemical pumps are important elements in the process industry and enable the safe handling of aggressive, hazardous or high-purity liquids. With a wide range of different pump types - from centrifugal to positive displacement pumps - almost any application can be served. The advantages range from absolute tightness and high chemical resistance to long service life and precise metering. Whether in chemicals, pharmaceuticals, food technology or water treatment, chemical pumps make a decisive contribution to the safety, efficiency and continuity of industrial processes.

Here are the most important aspects to look out for when buying chemical pumps:

Chemical pumps are among the most safety-critical components in chemical plants, laboratories, water treatment plants, the pharmaceutical industry and many other areas of process engineering. They often pump aggressive, toxic, explosive or high-purity media. An incorrect purchase can lead to leaks, production downtime, personal injury and environmental damage.

• The most important aspect is the pumped medium. The purchasing department must know the exact details: Concentration, temperature, particle content, conductivity, pH value, viscosity, density and possible reactions.
• Depending on the medium, different materials are used: stainless steel, Hastelloy, titanium, PTFE, PVDF or technically reinforced plastics.
• The wrong choice of material quickly leads to corrosion, swelling, cracking or deposits.
• Chemical pumps must be able to withstand the maximum operating temperatures and pressures. Plastic pumps in particular have limits, and diaphragm pumps often require temperature compensation.
• Purchasing should take into account both normal operation and possible extreme values (start, shutdown, cleaning).
• A precise design of the pump in terms of flow rate and delivery head prevents inefficient operation or overloading.
• Oversizing increases energy consumption and costs. Undersizing leads to cavitation or mechanical wear.
• Purchasing therefore requires precise data from the process engineering.
• Viscous or foaming media require special pump technologies such as positive displacement pumps or peristaltic pumps.
• For centrifugal pumps, the NPSH requirement (cavitation safety) must be clarified, otherwise there is a risk of massive damage to the impeller.
• Selecting the right pump type:
• Purchasing must understand why a particular pump type is being selected:
• Centrifugal pumps for low-viscosity, large volume flows.
• Magnetic drive pumps for absolutely tight delivery.
• Canned motor pumps for the purest or toxic media.
• Diaphragm pumps for aggressive and particulate media.
• Peristaltic pumps for sensitive or viscous substances.
• Metering pumps for precise volume control.
• The choice is never purely price-driven, but is crucial for process stability and safety.
• Tightness is important for chemical pumps. Purchasing must differentiate between three basic systems:
• Mechanical seals are tried and tested, but require more maintenance.
• Magnetic couplings operate almost leak-free and are ideal for toxic media.
• Hermetic systems such as canned motors offer maximum safety, but are more expensive.
• The service life and availability of spare parts for the seals must be clarified.
• Chemical pumps often run around the clock. Poor efficiency results in high operating costs.
• Modern, well-designed pumps often save more money over their service life than they cost to purchase.
• Pressure and temperature requirements determine whether metallic materials such as stainless steel, duplex, titanium or special alloys are required.
• Plastic materials such as PVDF, PTFE or PFA offer high chemical resistance, but have limits in terms of pressure and temperature.
• The purchasing department must check whether the wetted components are purely plastic-based or lined.
• O-rings and diaphragms have a strong influence on service life and tightness. Depending on the medium, EPDM, FKM, PTFE or Kalrez make sense.
• Incorrect elastomers are a typical cause of expensive failures.
• Strict requirements apply in chemical plants. Purchasing should take the following standards into account:
• ATEX conformity for potentially explosive atmospheres.
• ISO or DIN standards for pressure vessels and pump designs.
• FDA or USP classes for the pharmaceutical and food industries.
• TA-Luft or similar emission regulations.
• Modern chemical pumps offer options such as dry-running protection, pressure or temperature monitoring, flow measurement or leakage detection.
• Purchasing should clarify whether these systems are necessary for the process.
• A chemical pump is a safety-relevant component. Manufacturers should have certified processes and documented quality tests.
• Important criteria are ISO certifications, fully traceable material documentation and long-term experience in handling critical media.
• The availability of spare parts, maintenance packages and revision options are crucial for long-term operation.
• A pump without available spare parts can bring entire systems to a standstill.
• Competent manufacturers or dealers provide support with design, material selection and standards.
• Professional purchasing therefore not only evaluates the price, but also the supplier's advisory skills.
• A high-quality pump can be significantly cheaper in the long term than a cheap model that causes frequent downtime.
• Many chemical pumps are manufactured on a project-specific basis. Purchasing should clarify realistic delivery times and consider redundancy or stocking spare parts for critical systems.

Purchasing chemical pumps is a complex task that goes far beyond price negotiations.
Only when technical requirements, process risks and economic factors are carefully coordinated can a procurement be realized that guarantees long-term safety, efficiency and system availability.

Chemical pumps can be purchased from various suppliers. Comprehensive information about manufacturers and suppliers of Chemical pumps from all over the world can be found on Exportpages.