Industrial refrigeration

Whether frozen foods, freeze-dried fruits and vegetables or tempered cold stores – industrial refrigeration technology has a wide range of applications. Due to continuous developments, the requirements for availability, safety and environmental protection are subject to constant change. For example, with the "F-Gases Regulation", refrigerants such as ammonia and carbon dioxide are more frequently used. The regulation aims to reduce emissions of fluorinated greenhouse gases. As a result, the requirements for tightness and design of the corresponding components must be adjusted.


Compact, lightweight and environmentally friendly

With the NIKKISO Non-Seal canned motor pump, LEWA offers suitable solutions in a wide variety of areas. From cold storage, cooling and freezing to pumps for hazardous areas.

Advantages of the NIKKISO Non-Seal canned motor pump in refrigeration technology:

  • Compact design
  • Easy installation
  • Extremely low noise level
  • High environmental friendliness due to conformity with TA Luft (Technical Instruction on Air Quality Control) 
  • High safety factor due to twin protecting shell
  • Advanced monitoring device for bearings (E-monitor)
  • Installation in hazardous areas


Typical fluids for cooling:

  • Carbon dioxide (CO2)
  • Ammonia (NH3)
  • Mixture of biphenyl and diphenyl ethers
  • Dibenzyltoluol
  • Different freon fluids, such as:
    • R-134a (C2H2F4
    • R-125 (CF3CHF2)
NIKKISO Non seal canned motor pump


A technology for everyday life.

Refrigeration, modern coolants or tempered cold stores have become indispensable in our everyday life. Pumps are used in refrigeration technology at various points: in the food industry (cold storage, cooling and deep-freezing with natural and synthetic refrigerants), in the chemical industry (refrigeration systems) or for oil cooling systems for transformers.


For larger systems, the refrigerant is metered to the individual evaporators. The resulting pressure and the risk of icing pave the way for hermetically sealed pumps without shaft seals. During the return to the reservoir, the medium is condensed by the compressed and cooled refrigerant vapor in the compressor circuit and thus gets back to a liquid state



Pumps and Metering Systems for Distillation Plants and Applications in Refineries

Crude oil must be cleaned, separated, and converted (refined) until the final products suitable for sale are made (e.g., gas, diesel, heating oil, lubricants, propane, butane). LEWA supports you with pumps and metering systems, which are used in the refining process during chemical metering. Application with our products are distillation plants, coker, cracker, or visbreaker, for example. Ask our experts for more information!

More Details

Chemical Pumps and Metering Packages for the Chemical Industry

When critical, environmentally hazardous, toxic, or flammable fluids and suspensions need to be reliably conveyed or metered in high-pressure processes, there is no alternative to hermetically sealed metering pumps, process diaphragm pumps, and metering systems from LEWA. Hermetically sealed LEWA pumps with pressures up to 1200 bar are the first choice for the production of chemical intermediate and end products. Contact our experts and let us advise you about your individual chemical pump or system solution!

More Details

Pumps and Systems for the Food and Beverage Industry

LEWA supports producers and plant construction companies in the food and beverage industries with pumps and systems for homogenization and dispersion, as well as for other processing operations in the food industry. We work with you to plan all the important process-related operations, such as conveying, metering, mixing, heating, and cooling so that you can process your raw product cost-effectively.

More Details

Pumps and Metering Systems for Other Industries

LEWA offers customized solutions and references for almost all industries in which processes require exact metering or the reliable conveyance of fluids. As specialists in fluid handling, we of course also have experience in areas outside of our key markets.

More Details


LEWA ecoflow® diaphragm metering pump

LEWA ecoflow is the innovative and universal metering pump with DPS diaphragm protection system in a tried-and-tested modular system. Suitable for numerous applications, the ecoflow is our real all-around talent, relied on by customers from all industries.

More Details

Nikkiso Non-Seal® canned motor pump

The Nikkiso Non-Seal canned motor pump has been designed specifically for the chemical industry. To do this, the centrifugal pump is designed in accordance with API 685.

More Details

Get updates

Subscribe to our newsletter!

Get LEWA insights on products, applications and the business of metering fluids. Subscribe now for free.

Social Media

LEWA is on Linkedin LEWA is on YouTube LEWA is on Instagram
©2021 LEWA GmbH  Terms & Conditions Privacy Imprint