Cryogenic valves are used to shut off and control flow in systems where cryogenic liquids (e.g. liquefied natural gas, nitrogen, oxygen) are transported or stored. It must reliably seal connections and prevent leakage at extremely low temperatures.
Pressure and flow control at low temperatures:
Valves regulate the pressure and flow of gases or liquids, keeping them within safe limits and preventing excessive fluctuations that could lead to emergencies.
Freeze and wear protection:
Cryogenic valves are made from materials that are resistant to low temperatures and will not freeze or crack when in contact with cryogenic fluids. This is important to prevent damage and leakage.
Ensuring safety:
Temperature fluctuations and low temperatures can cause materials to become brittle, increasing the risk of leaks and breakage. Specialty fittings ensure that all mechanisms work correctly and safely despite extreme conditions.
Types of special cryogenic valves:
Cryogenic valves:
These valves are used to shut off and regulate flow in pipelines where cryogenic liquids are transported. They must be leak-proof and resistant to low temperatures to avoid leaks.
Cryogenic gate valves:
Used to completely shut off flow in cryogenic systems. These devices ensure complete isolation of piping from the environment and prevent leaks.
Cryogenic pressure regulators:
Used to maintain a consistently low or desired pressure in pipelines to prevent system overload and avoid emergencies.
Cryogenic couplings and flanges:
These devices provide leak-proof connections between different parts of the system, withstanding extremely low temperatures without damage or leakage.
Cryogenic check valves:
These valves prevent backflow of liquid or gas, which is important for protecting equipment and preventing emergencies.
Benefits of using specialized cryogenic valves:
Reliability at low temperatures: Cryogenic valves are designed to operate at very low temperatures, ensuring their durability and leak-free operation.
Safe operation: It provides reliable insulation and prevents emergencies such as gas leaks or equipment damage during extreme temperature fluctuations.
Durability and resistance to wear and tear: The materials used to manufacture cryogenic valves are resistant to low temperatures and do not lose their performance characteristics.
Leak prevention: Cryogenic valves and other fittings ensure leak-tight systems, preventing the leakage of hazardous or expensive substances such as liquefied natural gas.