Hydraulic compressors

Efficient and reliable compression of biogas up to 250 bar

Hydraulic Compressors - DK Series

Hydraulic biogas compressor

Efficient and reliable compression of biogas up to 250 bar.
Our proprietary hydraulic compressor is used in many of our own filling stations and is the result of over 25 years of experience in compressor development and service.
With a focus on high performance, long life and easy service, the compressor is optimized for biogas plants, CBG filling stations, boil-off handling in LCBG systems and filling of mobile gas cylinders.
The compressor is available as a complete compressor skid, including hydraulic unit, gas cooler and control system - ready to be integrated into both new and existing plants.

Example installation of two hydraulic units.
Our hydraulic DK compressor is available with three compressor cylinder versions.

General benefits of our compressor

  • Modular design: Simplifies spare parts management and maintenance

  • Tungsten carbide coated piston rod: Very long life, REACH authorized

  • Standardized seals: Easy to replace

  • Corrosion-resistant components: Anodized aluminum parts for durability

  • Efficient gas cooling: For increased availability and longer lifetime

  • Seamless system integration: PLCs and hydraulic systems working together

  • Safe piston lock function: Easy and safe service

  • Variable flow (20-100%): Without frequency converter

Advantages of our hydraulic power pack

  • Proven hydraulic pump: Variable displacement (Parker PV Plus) with high quality components

  • Advanced linear position sensor: Provides full control of piston speed throughout the stroke

  • Optimized ramping: Smooth acceleration and braking near end positions

  • Pressure stable operation: No recoil or pressure shocks when overturning

  • Compact design: only 1250×750 mm

  • Stainless steel oil tank: With large level glass for visual monitoring

  • High quality oil filtration: 2 micron filter for optimal lifetime

Included as standard:

  • Oil cooler

  • Electronic sensors with display for oil temperature and level

Latest news

More news

Flat filling of compressed biogas at the Gammalstorp farm facility

January 2026
This week, we commissioned our new flatbed filling station at the Gammalstorp farm biogas plant outside Linköping in collaboration with IGF.

Green transport of mobile biogas tanks

January 2026
Today, our customer Småländska Bränslen picked up the first two of a total of six new mobile biogas tanks that we built for Slättäng Biogas – a new farm facility outside Ystad.

Two new CBG stations in operation for Molgas Energy Group in Trøndelag

November 2025
In late autumn, we at Processkontroll Green Technology two new CBG stations – compressed biomethane, also known as vehicle gas – for Molgas Energy Group in Stjørdal and Namsos in Trøndelag, Norway.

Europe's largest filling station for liquid and compressed biogas delivered to Gasum

May 2025
Europe's largest filling station for liquid (LBG) and compressed (CBG) biogas has now been inaugurated in Kallhäll, Järfälla municipality. Processkontroll GT AB has built this modern station, which is an important step in Sweden's work with sustainable transport.

New flatbed filling plant to Fredrikstad, Norway

January 2025
Just before Christmas, we had the pleasure of installing and commissioning a new gas flare filling plant in Fredrikstad, Norway. Using a high-performance Pignone compressor, the plant can fill up to 6 mobile gas cylinders with biogas simultaneously.

The past year - Merry Christmas & Happy New Year!

December 2024
A record year for Processkontroll Green Technology with more projects than ever in biogas and hydrogen, paving the way for a greener future in both mobility and industry.

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