Brief description: Cryogenic valve for LNG tank is a control valve specifically designed for LNG storage tanks and supporting low-temperature pipelines, with a working temperature of -162 ℃. It is a key safety equipment for LNG receiving stations, storage and distribution stations, refueling stations, and other occasions, used for functions such as medium switching, regulation, and safety protection. The performance is directly related to the stable operation and safety protection of the entire storage tank system.
The main functions include
On/off control: manual or automatic control of LNG circulation and cut-off
Safety protection: Automatic release or emergency shutdown in case of overpressure
Adjustment function: Adjust parameters such as flow rate and pressure
Isolation protection: isolate equipment or pipe sections during maintenance
Safety standards: The valve body is made of forged austenitic stainless steel (SS316L) integral forming process, which undergoes deep cold treatment (-196 ℃ insulation for 2 hours) to eliminate internal stress. The sealing surface of the valve seat is treated with low-temperature wear-resistant spraying process, and the low-temperature toughness is maintained at more than 80% of the room temperature level, eliminating the risk of brittle fracture in extreme environments.
Sealing performance: Adopting a composite sealing structure of metal bellows and graphite packing, coupled with precision machined metal sealing surfaces, the leakage rate approaches zero, solving the hidden danger of LNG medium leakage.
Anti static device: A conductive spring (resistance ≤ 10 Ω) is installed between the valve stem and valve body to effectively release the static electricity generated by the flow of the medium and prevent the ignition of combustible gases by static sparks.
Choosing our Cryogenic Valve for LNG Tank is not just about choosing a product, but also about choosing a safety commitment that spans the entire lifecycle of LNG storage tanks. Contact us immediately for exclusive solutions!
FAQ
Q: What is the maintenance cycle for the Cryogenic Valve for LNG Tank? Do you need special maintenance tools?
A: Under normal operating conditions (≤ 5 operations per day), the valve maintenance cycle is 8000 hours or 12 months (whichever comes first). During maintenance, only conventional tools are needed to replace the seals. We provide a specialized low-temperature seal installation kit (including positioning fixtures and torque wrenches), which can be quickly operated without the need for professional technicians.
Q: Can this valve adapt to the rapid filling conditions of LNG storage tanks (with large flow fluctuations)?
A: Absolutely possible. The valve flow channel has been optimized through CFD fluid simulation, resulting in a 15% increase in flow resistance coefficient (CV value). Under the filling condition of a maximum flow rate of 1200m ³/h, the pressure fluctuation behind the valve can be controlled within ± 0.5bar, avoiding damage to the sealing surface caused by "cavitation" due to excessive flow rate.
Hot Tags: cryogenic valve for LNG tank, China cryogenic valve for LNG tank manufacturers, suppliers, factory, Cryogenic Valve for LNG Tank, lng valve