- Using purified water (pre-filtered)
- Common procedures of ultra-filtration or reverse osmosis
- Final water treatment stage of ion exchanger and EDI systems
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Water treatment
GEMÜ R480 Victoria metal butterfly valve
GEMÜ D450 plastic butterfly valve
GEMÜ R677 plastic diaphragm valve
Electrolysis
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
Power-to-liquid
- 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
