Views: 0 Author: Site Editor Publish Time: 2024-07-31 Origin: Site
When choosing a hydrogen valve, multiple factors need to be considered to ensure the performance, safety, and reliability of the valve. Here are some key points, cited from
relevant web pages:
Material selection: Valves should be made of high-quality materials to prevent hydrogen embrittlement, which is a potential issue due to the small size of hydrogen molecules
and their ability to penetrate materials.
Pressure rating: Hydrogen valves need to be able to withstand the pressure required for system operation, typically 350-700 bar, for use in onboard hydrogen storage tanks.
Sealing performance: Valves must provide leak free sealing to avoid safety risks and waste caused by hydrogen gas leakage.
Valve stem sealing design: When choosing a ball valve, one should seek a valve stem sealing design with high wear resistance to achieve leak free sealing.Flow coefficient (KV
value): Understanding the KV value of valves is crucial to ensure that the system has the required flow rate. Different applications may require different KV values, such as
hydrogen refueling stations that may require high KV values to meet rapid refueling needs.
Valve type: Choose the appropriate valve type based on application requirements, such as ball valve, needle valve, or one-way valve. Each valve has specific functions and
design considerations in hydrogen systems.
Compatibility: Valves should be compatible with other hydrogen system components to ensure overall system consistency and performance.
Performance and reliability: The performance of valves should be measured by standards such as probability of failure on demand (PFD) and safety integrity level (SIL).
Valve diagnosis: Intelligent systems can monitor the health and performance of valves, which is crucial for preventive maintenance and ensuring long-term reliability.
Hydrogen characteristics: As a lightweight molecule, hydrogen requires special attention to valve packing and fittings to reduce the possibility of leakage.
When selecting hydrogen valves, the supplier's expertise and support services should also be considered to ensure that the valve can meet all technical requirements for
specific applications.
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