Hydrogen valves from A. Hock
Since the 1970s, industrial valves from A. Hock have been used worldwide - also in hydrogen applications. To ensure that the control valves perform their tasks reliably and safely, the right choice of materials and technical know-how are the crucial factors for us during design and manufacture.
Safe valves, technically mature and with long service life
Hydrogen is a demanding medium that is used in an increasing number of applications. To ensure safe operation, all components that come into contact with hydrogen must be suitable for the purpose.
| Series | Type | Speciality | Pressure Nominal | Diameter Nominal | KVS |
| S2000 | 2-way valve | Allrounder | PN16, PN40 / ANSI150, ANSI300 | DN15 - DN300 | 0,01 - 1600 |
| S2060 | 2-way valve | High pressure single seated | PN63, PN160 / ANSI600, ANSI900 | DN15 - DN100 | 0,01 - 170 |
| S9000 | 2-way valve | Cage guided plug | PN40, PN160 / ANSI600, ANSI900 | DN15 - DN300 | 0,01 - 1400 |
| S2003/13 | 3-way valve | Allrounder | PN16, PN40 / ANSI300 | DN15 - DN300 | 2,5 - 1200 |
| S1003/13 | 3-way valve | HVAC application | PN16, PN25 / ANSI300 | DN15 - DN80 | 2,5 - 100 |
| V5066 | 3-way valve | Thermal oil application | PN16, PN25 | DN15 - DN80 | 2,5 - 100 |
Good to know: Each of our valve series can be flexibly adapted to the needs of hydrogen applications. Whether pneumatically or electrically actuated, we offer them the widest possible choice of actuators for your application.
You can count on it!
The H2-ready valves from A. Hock ...
- can prevent hydrogen embrittlement due to the smallest number of casting defects
- are safe, even at high pressures
- have low leakage values
- allow finest flow control up to KVS 0,01
- are approved or tested according to TA-Luft, DGRL, NACE
- have a long service life
- are exclusively equipped with high-quality materials
- are compact due to direct mounting and can be used in narrow environments
- have a high degree of internal and external leak-tightness
- are in short: H2-ready!
Planning hydrogen systems – what to consider
The safety and quality of hydrogen systems depend largely on compliance with relevant standards and guidelines. It is therefore important to know and comply with the most important standards, for example ISO 11114 (it regulates the selection of suitable materials and minimizes the risk of embrittlement or corrosion).
All relevant standards and guidelines for the planning and realization of hydrogen systems at a glance!
Suitable materials for hydrogen applications
Austenitic stainless steel, especially 316 or 316L, is ideal for use with hydrogen. It is particularly robust and safe. Also important: seals and lubricants should also be tested for their suitability for the medium.
Leak-tightness requirements for hydrogen environments
The choice of the appropriate valve bonnet depends on the environment in which it will be used:
In the open air or in ventilated rooms, there is a slighter risk of an explosive atmosphere. Our low-maintenance packings are suitable as a sealing system here.
In closed, unventilated rooms, higher sealing requirements are necessary. For such applications, we recommend sealing systems approved according to ISO 15848-1, such as our certified TA-Luft packing or variants with bellows. Thanks to their robust construction and durability, valves with bellows offer maximum tightness and reliability.
Requirements for the cleanliness of parts in contact with media
Grease and oil residues can react with hydrogen, especially at high pressure or high temperatures. This can cause dangerous situations such as fires or explosions. It is also possible that particles can cause mechanical damage to components or blockages and impair the hydrogen purity.
Therefore, we recommend cleaning the parts in contact with the media, especially for applications with high-purity hydrogen.
Applications for hydrogen valves
Industrial control valves play a crucial role in the hydrogen sector, especially in view of the growing importance of hydrogen as a clean energy carrier. Here are the main applications for industrial control valves in the hydrogen sector:
- Hydrogen production:
- Electrolysis: Control valves regulate the flow of water and electricity in electrolysis plants to optimize the efficiency of hydrogen production.
- Steam reforming: In the steam reforming of natural gas or biomass, valves regulate the supply of reactants and the removal of products.
- Hydrogen storage:
- Pressurized storage: Valves control the flow of hydrogen into and out of pressurized storage tanks, precisely regulating pressure and flow rate.
- Solid storage: In chemical or physical hydrogen storage systems, control valves manage the processes of hydrogen absorption and release.
- Hydrogen transportation:
- Pipeline systems: In hydrogen pipelines, valves regulate gas flow, control pressure, and ensure safe and efficient distribution.
- Transportation containers: Control valves in transportation containers control the release and absorption of hydrogen during transportation.
Experience in handling the critical medium hydrogen
For decades, control valves from A. Hock have been controlling processes in numerous industrial plants. We have mastered the functional principles of our standard products like no other. What distinguishes us beyond that is the manufacture of customer-specific products: Valve solutions such as hydrogen valves, including the associated electronic or pneumatic actuators - tailored to the respective requirement and at competitive prices.
All about hydrogen and hydrogen embrittlement
What processes are available for the production of hydrogen? What is the significance of hydrogen for the energy transition? And what challenges do valve manufacturers and plant engineers face in dealing with the gas? Find out all this and more in our articles on hydrogen and hydrogen embrittlement.
Managing Director
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