Power source of the future – hydrogen

Power source of the future – hydrogen

Hydrogen as a medium places stringent requirements on valves. Above all, the small molecular size of the volatile gas quickly becomes a challenge when selecting materials. No matter whether it's about the right material or the corresponding approval, we are by your side in the selection of the right valve.

Water treatment
  • Using purified water (pre-filtered)
  • Common procedures of ultra-filtration or reverse osmosis
  • Final water treatment stage of ion exchanger and EDI systems


GEMÜ R480 Victoria metal butterfly valve

GEMÜ D450 plastic butterfly valve

GEMÜ R677 plastic diaphragm valve


Overview electrolysis process:

Procedure Water requirements Process parameters Valve selection 

PEM electrolysis 

Ultra-pure water

1-40 bar,

90 °C

Generally plastic or lined valves for water contact. Metal valves are appropriate for gas (H2/O2) 

Alkaline electrolysis

DI water 

1-40 bar,

90 °C

Potassium hydroxide, generally stainless steel valves 

GEMÜ R690 plastic diaphragm valve

GEMÜ 537 metal globe valve

GEMÜ R480 Tugela metal butterfly valve

Gas preparation
  • Gases generated from the electrolytic cell must be prepared for a certain gas quality
  • Using pressure swing adsorption (PSA)
  • Stringent requirements for valves
  • GEMÜ globe valves and high-performance butterfly valves

GEMÜ R471 Tugela metal butterfly valve

GEMÜ PCS 514 metal globe valve

  • Production of liquids using green hydrogen from electrolysis plants
  • Hydrogen reacts with CO2 in the presence of catalysts to create hydrocarbons

GEMÜ 537 metal globe valve

GEMÜ B22 metal ball valve

Supporting processes
  • Preheating and cooling are important process steps
  • Cleaning processes

GEMÜ R480 Victoria metal butterfly valve

GEMÜ R677 plastic diaphragm valve

GEMÜ B22 metal ball valve

GEMÜ valves and components


Control valves 
This is how a globe valve becomes a control valve.

The globe valves are ideally suited to control tasks. The precise design of the control valves is important. This ensures that your product is optimally adjusted to your requirements and remains loyal to you for a long time. Please feel free to use our specification sheet 
or contact an advisor.

The flow restrictors for control valves can have different geometries. You can find an overview of our bodies attached here.

An overview of the flow restrictors with different geometries. You can find out more about our control valves here.


Regulating needle

Regulating cone

Regulating cage

Overview of process accessories:

Process reliability due to tested quality

Applications brochure download

Hydrogen applications [EN]

pdf5.10 MB

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