Diaphragm Pumps, Vacuum Pumps

OEM pumps for liquids and gases

Membran-Vakuumpumpen chemische industrie header


Pumps for pumping and compressing liquids and gases

Vacuum pumps, diaphragm pumps, laboratory pumps, pumping systems, rotary evaporators

Vacuum pumps and diaphragm pumps work as follows: An elastic diaphragm is moved up and down by an eccentric. In the downstroke, it draws in the medium to be pumped through the inlet valve. In the upward stroke, the diaphragm forces the medium out of the pump head via the outlet valve. The pumping chamber is hermetically separated from the pump drive by the diaphragm. Therefore, diaphragm pumps convey gases or liquids completely unaltered. Our range is diverse and includes, for example, micro pumps (for dosing and pumping very small quantities), pendulum piston pumps (small size, large flow rate), double-head pumps (large vacuum, large flow rate), four-head pumps (very large vacuum), explosion-proof pumps (comply with ATEX directives)



Our products

Membrane Liquid Pumps

General information about liquid pumps

Our claim for diaphragm liquid pumps is to combine maximum performance with minimum size. The use of various chemically resistant materials enables the pumping of virtually all neutral and aggressive media. The pumps are available in different designs and motor variants, dry-running safe, self-priming, maintenance-free and combinable with various connection types.


application fields


  • Process engineering
  • Process technology
  • Semiconductor technology
  • Repro technology
  • Medical technology


  • Environmental and analytical technology
  • Agriculture
  • Food industry
  • Auto industry
  • Laboratory and many more


Advantages of Schmachtl liquid pumps

  • Chemical resistant
  • Suitable for continuous operation
  • Dry running safe
  • High performance with small dimensions
  • Customized designs
  • Many different motor variants
  • Special types for metering tasks
  • Ex-variants


Technical features

  Delivery rate:  From a few µl to 6 l/min (larger delivery rate on project basis)
  Suction head:  From 2.5 to 6 mWs
  Operating pressures:  up to 60 mWs (higher pressures on project basis)
  Motors:  AC motors, DC- motors also in brushless version



Diaphragm gas pumps

General information about gas pumps

The purpose of diaphragm gas pumps is to pump and compress gases and vapors. The pumps create vacuum without contaminating the media and are available in different variants and designs.


application fields


  • Process and chemical engineering
  • Research
  • Medical engineering
  • Reprography
  • Environmental and analytical engineering
  • Agriculture


  • Safety engineering
  • Auto industry
  • Chemical industry
  • Vacuum technology
  • Climate engineering
  • Fuel cells and many more


Advantages of Schmachtl Gas Pumps

  • Chemically resistant designs
  • Maintenance-free
  • Suitable for continuous operation
  • Compact design
  • Customized designs
  • Ex variants
  • Many different motor variants
  • Temperature-resistant and heated variants
  • Special gas-tight double diaphragm pumps


Technical features

  Delivery rate:  From 0.33 l/ min to 220l/min (higher delivery rate on project basis)
  Operating pressures:  up to 7 bar (higher pressures on project basis)
  end vacuum:  up to 0.5 mbar absolute
  motors:  AC motors, DC- motors also in brushless design



Laboratory pumps and systems


Laboratory pumps, pump systems and rotary evaporators facilitate everyday laboratory work through simple handling. They are used in a wide range of applications where chemical resistance and ease of operation are important. Our product portfolio includes both simple small pumps and fully automated pumping stations. The units are matched for precise, safe and clean control, metering and pumping of neutral and aggressive liquids.


Application fields


  • Research
  • Medical technology
  • Food industry
  • Chemical industry
  • Biotechnology


  • Filtration
  • Degassing
  • Gel drying
  • and many more



  • Unadulterated pumping even of aggressive media
  • Available in many designs
  • Tailor-made for your application
  • Stepless control of the vacuum
  • Special design for humid gases
  • Saving space
  • Central vacuum supply for multiple users
  • ATEX-certified pumps


Technical Features

  Delivery rate:  up to 60 ml/min
  Operating pressure:  up to 4 bar
  End vacuum:  up to 2 mbar absolute
  Motors:  for all common mains voltages




Project Services


With Schmachtl Project Services you are in good hands from the beginning of your project. 

From the consultation meeting to technical support. We support you so that you can implement your project





1.  Technical consultations:

- For new applications/developments

- Replacement types alternative for existing


2. Online/on-site demonstrations/


3. Training & continuing education


4.  Rental equipment/test equipment


1.  Process analysis

needs assessment

2.  Feasibility study

3. Conceptual design/


Production services

1.  Assembly/

subassembly assembly

2.  Pre-assembly

3. CE conformity assessment

4.  Retrofit: Modernization &

retrofit, equipment replacement

Ongoing additional services

1.  Service packages:


(Emergency call for malfunction)/

Monitoring Services

2.  Technical Support

Logistics services

With our logistics services you have the possibility to choose between different

delivery and storage options. We support you. 


delivery options

1.  Collective deliveries

2.  Demand site deliveries

3. Consignment stock

4.  Flexible delivery times

Packaging Solutions

1.  Customized goods-



packaging industry

(collective packaging)

2. Special packaging

E - Business

1.  EDI integration

Storage options

1.  Spare parts storage

2.  Frame contracts:

stock in stock

Knowledge blog

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It's Better Not to Pump: Why High-End...

If pumps fail in manufacturing companies, this leads to the standstill of entire production chains. In the semiconductor industry, this can cause damage of 200,000 euros in just three hours.

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7 factors that are critical when...

The quality of pumps, pump systems, or rotary evaporators is critical to the efficiency and productivity with which labs can operate.

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Mini Diaphragm Vacuum Pump of LABOPORT®, Type N96

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Diaphragm Vacuum Pump of LABOPORT®, Type N820G and N840G

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Pendulum Piston Compressor and Vacuum Pump NPK 012

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NPK 06: New pump from KNF with strong performance

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High conveying capacity with low pulsation

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High safety in handling aggressive liquids

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Three times improved in conveying capacity, vacuum and pressure

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Pumps for reliable ink delivery in inkjet digital printing

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New diaphragm pumps for stationary gas analysis

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Catalogs and brochures

News and appointments



Our partners



Contact us for more information about our products and services. We are happy to assist you.

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