LNG (Liquefied Natural Gas)
Natural gas cooled to -162 degrees C to liquefy for transport. LNG service valves must be cryogenic-rated (extended bonnet), made from austenitic stainless steel or 9% nickel steel which remains ductile at -162 degrees C. Carbon steel becomes brittle at these temperatures.
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What is LNG (Liquefied Natural Gas)?
Natural gas cooled to -162 degrees C to liquefy for transport. LNG service valves must be cryogenic-rated (extended bonnet), made from austenitic stainless steel or 9% nickel steel which remains ductile at -162 degrees C. Carbon steel becomes brittle at these temperatures.
How does LNG (Liquefied Natural Gas) affect valve material and design selection?
Natural gas cooled to -162 degrees C to liquefy for transport. Valve material selection must account for this service condition at every component: body, bonnet, trim (seats, disc/ball/gate, stem), packing, and bolting. Reference ASME B16.34 for pressure-temperature limits by material group, and NACE MR0175 for sour service material restrictions. Vajra Industrial Solutions provides materials-of-construction (MOC) recommendations based on your process datasheet.
Which valve certifications are required for LNG (Liquefied Natural Gas) service?
Service-specific certifications depend on the application: fire-safe testing to API 607 for hydrocarbon service, cryogenic testing per BS 6364 for LNG service, fugitive emission certification to ISO 15848-1 for LDAR compliance, NACE MR0175 compliance for sour service, and SIL certification per IEC 61508/61511 for safety-critical applications. Vajra Industrial Solutions supplies fully certified valve packages with all required documentation.
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