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Pumps for LNG and LPG: Hermetic Pump Solutions for Cryogenic Liquid Gases

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16 Oct 2026  |
LNG (Liquefied Natural Gas) and LPG (Liquefied Petroleum Gas) are liquefied gases used in industrial, energy and transport applications. LNG consists predominantly of methane and is liquefied at extremely low temperatures of around −162 °C, which significantly reduces its volume for storage and transport. LPG consists mainly of propane and butane and is liquefied at comparatively low pressure.
LNG and LPGBoiling point: approx. −162 °CTypical components: propane and butane

Hermetic Pump Solutions for Cryogenic Liquid Gases

Hermetically sealed and reliable pump solutions are crucial for handling these media. Low temperatures, high vapour pressure and fluctuating operating conditions place particular demands on pumping technology and plant safety. HERMETIC Canned Motor Pumps enable safe and leak-free operation even under demanding cryogenic process conditions.

Things to Know About LNG and LPG

  • LNG (methane)Boiling point: approx. −162 °C
    Cryogenic, liquefied natural gas
    Significantly reduced transport and storage volume
    High demands on materials and leak-tightness
  • LPG (propane/butane)Liquefaction occurs even at moderate pressures
    Typical components: propane and butane
    Used in industry, energy supply and transport
    High vapour pressure and varying operating conditions

Manufacture of Chemicals

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Image: HERMETIC-Pumpen GmbH

Hermetic pumping of methane and hydrogen mixtures in petrochemical processes under cryogenic conditions. (e.g. ethylene, urea, HDPE, LLDPE, LDPE, butadiene or rubber)

Application: LNG and LPG

  • RequirementMedium: Methane and hydrogen
    Delivery rate: 10.6 m³/h
    Pumping head: 151 m
    Operating temperature: –98.1 °C
    Advantages: Reliable operation at low temperatures and high vapour pressure
  • HERMETIC SolutionsPump: CAMTV 32/5+0
    Motor: N54p-2
    Pump type: Vertical multi-stage Canned Motor Pump
    Speciality: Low viscosity (0.07 CP), high vapour pressure of 32.2 bar and low temperature of the medium

Manufacture of Speciality Chemicals and Polymers

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Image: HERMETIC-Pumpen GmbH

Production of high-quality speciality chemicals and polyolefins, including HDPE, mLLDPE, PE100+ polyethylene for gas pipelines, POE, alpha-olefins and UHMWPE. Production takes place under cryogenic conditions, with high standards of operational safety and process stability.

Application: LNG and LPG

  • RequirementMedium: Methane, hydrogen and ethylene
    Delivery rate: 153 m³/h
    Pumping head: 129 m
    Operating temperature: –98.7 °C
    Advantages: Reliable operation at low temperatures and high vapour pressure
  • HERMETIC SolutionsPump: CAMFTVmu 60/2
    Motor: N74rm-2
    Pump type: Vertical multi-stage Canned Motor Pump
    Speciality: By-pass pipe for safe operation and to prevent vapourisation; magnetic bearing; low medium temperature

Can’t Find Your Application Here?

We’ll work with you to develop a suitable pump solution for your specific process requirements. Thanks to our many years of experience in handling critical media, we can also produce bespoke designs and specialised solutions.

Get in Touch With Our Experts

Are you planning an LNG application, or do you have any questions about conveyor technology, design or possible applications? Please contact our team of experts. We’d be happy to advise you. Make an enquiry now

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HERMETIC-Pumpen GmbH is a leading developer and manufacturer of hermetically sealed pumps and pumping technologies. The specialist for canned motor pumps has earned a worldwide reputation for its safe and long-lasting pumps, which can be...

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