Cryogenic valves can be categorized into various types based on their structural design and application scenarios, covering different temperature ranges (e.g., -40°C to -196°C and below). Key types include:
Ball Valves:
Cryogenic ball valves: Suitable for conventional cryogenic systems (e.g., liquid nitrogen and liquid oxygen), with excellent sealing performance.
Ultra-cryogenic ball valves: Designed for extremely low temperatures (below -196°C) such as liquefied natural gas (LNG), with a metal-to-metal seal.
Cryogenic fixed ball valves: Stable structure, reduced leakage risk, suitable for high-pressure applications.
Gate Valves:
Cryogenic gate valves: Used for pipeline isolation, such as cryogenic forged steel gate valves, are resistant to low-temperature shock.
Globe Valves:
Cryogenic globe valves: Control the opening and closing of fluids and are suitable for liquid ammonia or propane systems.
Cryogenic angle globe valves: Optimize flow direction design to reduce pressure loss, often using polytetrafluoroethylene as the sealing material.
Specialty Valves:
Anti-freeze breather valves: Used for tank pressure equalization and resistant to low-temperature environments. Electronic Cryogenic Valve: Fast response (1-5 seconds), suitable for precision control systems
