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Pneumatic cryogenic shut-off valve

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January 09, 2026
Category Connection: Control Valve
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Tags:
#Modulating Control Valve #Pneumatic Diaphragm Control Valve #Pneumatic Control Valve
Brief: See how this offering can bring practical value to common tasks and projects. In this video, we demonstrate the SONGO Cryogenic Cut-off Valve in action, showcasing its rapid emergency shutdown capabilities for liquefied gases like oxygen, nitrogen, and LNG. You'll get a detailed walkthrough of its robust construction, fail-safe operation, and various connection types including socket weld, butt weld, and flange configurations designed for extreme low-temperature environments.
Related Product Features:
  • Forged stainless steel body with Inconel 625 stem and PCTFE seat ensures zero leakage sealing.
  • Extended bonnet design prevents packing from freezing and accommodates valve stem cold contraction.
  • Double-acting pneumatic actuator provides rapid shutdown with less than 1-second response time.
  • Spring-return models offer fail-safe operation for FC/FO (fail-close/fail-open) emergency modes.
  • Suitable for extreme low-temperature media including LO2, LN2, LAr, LNG, and CO2 from -196℃ to +75℃.
  • Available in multiple connection types: socket weld, butt weld, and flange configurations.
  • Operates with air pressure range of 0.4~0.7MPa with emergency cut-off time under 2 seconds.
  • Nominal diameter options range from 15mm to 100mm to accommodate various system requirements.
FAQs:
  • What types of cryogenic media is this valve suitable for?
    The valve is designed for ultra-low temperature media including liquefied oxygen (LO2), liquid nitrogen (LN2), liquid argon (LAr), liquefied natural gas (LNG), and carbon dioxide (CO2), operating within a temperature range of -196℃ to +75℃.
  • What safety features does this pneumatic cryogenic valve offer?
    It features rapid emergency shutdown with less than 2-second response time, fail-safe operation with spring-return models for FC/FO (fail-close/fail-open) modes, and zero leakage sealing through its forged stainless steel construction with PCTFE seats.
  • What connection types are available for this cryogenic shut-off valve?
    The valve is available in three connection types: socket weld, butt weld, and flange configurations, with nominal diameters ranging from 15mm to 100mm to suit various piping system requirements.
  • How does the valve handle extreme low-temperature conditions?
    The extended bonnet design prevents packing from freezing and accommodates valve stem cold contraction, while the specialized materials including forged stainless steel body and Inconel 625 stem ensure reliable performance in cryogenic environments down to -196℃.
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