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Maximator – Expertise in hydrogen for over 20 years

We are one of the leading suppliers of hydrogen refueling stations.

Maximator - Expertise in hydrogen for over 20 years Maximator is one of the leading companies that offers high pressure and test technology up to 25,000 bar. The standard air powered Maximator gas compressors have been used in hydrogen applications for over 20 years. Hydrogen technology has been a key focus of the company since 2007.

Maximator employs 700 people worldwide. The headquarters are in Nordhausen and include engineering and manufacturing. The entire product portfolio is manufactured in the Nordhausen plant to ensure that production is carried out using the latest technology and corresponding quality processes. There are also branches in Shanghai, China and the USA. The branches are responsible for the commissioning and field service of the plants located in these areas.

As the demand for hydrogen refueling systems increases, Maximator plans to expand production to these locations. To meet the growing hydrogen business, Maximator Gas Solutions GmbH and the joint venture between Maximator & Testnet GmbH were also founded. Maximator Gas Solutions focuses on the development of storage systems and the required regulatory approvals. The joint venture with Testnet focuses on life cycle tests for hydrogen storage systems.

The service area is also geared towards the hydrogen business. In 2017, Maximator Hydrogen Inc. was founded in San Francisco, California, to manage the service for the Maximator hydrogen plants in California.

Hydrogen Refueling System 350/700 bar for Trucks/Busses/Cars

Systems engineering

Maximators refueling system basically consists of the supply unit (electrolysis, storage), a high-pressure compressor, high-pressure storage, a refrigeration system and the gas pump (dispenser). High-pressure compressors and accumulators are housed in a container. The other parts of the system are designed as stand-alone units. The hydrogen can be delivered in gaseous form and stored on site or produced directly at the gas station using electrolysis. The supply storage is controlled by the MAX Flowtech connection cabinet. The patented MAX Compression (high pressure compressor) with the associated drive MAX Power (hydro) takes over the pressure increase. After compression, the gas is filled in high-pressure storage. Before the vehicle is refueled, the gas is cooled to the required starting temperature by the MAX Chill (refrigeration system). The vehicles are refueled according to their type (cars / trucks) on the side of the petrol pump intended for this purpose

MAX Compression

The patented MAX Compression is a 2-stage, fluidically driven highpressure piston compressor that compresses hydrogen from 24 bar to maximum 1,000 bar. It is equipped with the ASX function (automatic seal exchange), which ensures an automatic seal change of the hydrogen high pressure seal. This automatic change reduces unplanned downtime to a minimum. The seal change itself takes about 3 minutes per pressure converter. The system is a dry-running compressor system, so there is no possibility of contamination of the hydrogen to be refueled or the environment in the event of leakages.

MAX Power (hydro)

MAX Power (hydro) is the associated drive for Max Compression, which can be operated with different fluids. It is equipped with a 55 KW electric motor including power control. MAX Power is a semi-closed circuit that, combined with the power weighing process *, achieves an overall efficiency of almost 90 %.

* Balance of forces between high pressure and drive unit

MAX Dispenser

The dispenser built in the Maximator design enables both types of vehicles (cars / trucks) to be refueled in the shortest possible time. It is equipped with a filling unit for cars (pressure range 700 bar) and a filling unit for trucks and buses (large volumes, pressure range 350 bar). The built-in valve and measurement technology was selected from the Maximators product portfolio. The dispenser is built and approved according to the relevant guidelines (OIML). The refueling process complies with the SAE J2601-2016 standard.

MAX Service

As standard, the hydrogen refueling system is equipped with an extensive service and maintenance package. All safety and function-related inspections and tests are carried out at 6 different levels monthly to annually. For example, the equipment is checked for any leaks and, in addition to functional tests, wear parts are replaced. An experienced, multi-person service team of engineers and specialists is available to assist the plant operator with all matters.

MAX Download

Further information is available for download here:

Project description HRS (pdf)

Maximator Hydrogen Technology (pdf)

Press release opening AVIA St. Gallen (pdf)

Press release One hundred hydrogen fuelling stations planned for Bavaria

MAX Galerie

The MAX Galerie offers you an insight into our H2 product portfolio.

SK Group

Maximator is an independent subsidiary of Schmidt & Kranz Holding. Schmidt & Kranz was founded in 1885 and is a privately owned family business specializing in various technical technologies, including the development of mining machinery, mineral processing equipment, automated testing equipment and tunnel boring equipment. With the latest global focus on reducing emissions and the CO2 balance, Schmidt & Kranz Holding is concentrating on the development and use of hydrogen technologies in order to support environmentally friendly initiatives worldwide.

You will find further information of the Schmidt & Kranz Holding at the homepage