LNG Ball Valves for Cryogenic Service
LNG ball valves — lng Ball Valve selection is driven by low-temperature systems requiring cryogenic materials, extended stem design, cavity pressure management and low-emission sealing.
How service conditions affect LNG ball valve selection.
low-temperature systems requiring cryogenic materials, extended stem design, cavity pressure management and low-emission sealing.
Define the isolation duty
Determine whether the valve is used for routine process isolation, emergency shutdown, line sectionalizing, maintenance segregation or double isolation. This changes the required body construction, seat arrangement and actuation.
Match materials and sealing to the media
Body and trim materials, soft-seat or metal-seat selection, stem packing and elastomers must be compatible with the process fluid and design temperature. Fire-safe, fugitive-emission or sour-service requirements should be stated explicitly.
Confirm testing and documentation
Include pressure testing, NDE/NDT, PMI, coating, dimensional inspection and final documentation requirements in the inquiry so the technical offer can match the project specification.
LNG & Cryogenic Ball Valve FAQ
Which ball valve is commonly considered for lng & cryogenic?
The choice can include floating, trunnion, top entry, fully welded or DBB construction depending on line size, pressure, maintenance philosophy and isolation duty.
What data is needed for a LNG ball valve RFQ?
Provide the service medium, pressure and temperature, size/class, materials, ends, operation, applicable standards, testing, coating and documentation requirements.
Do lng & cryogenic applications require special testing?
Testing requirements are project-specific and should follow the approved datasheet, ITP/QAP and governing project specifications.