overview Ultra low temperature butterfly valves are widely used in air separation equipment, low-temperature refrigeration engineering, and LNG (liquefied natural gas) storage and transportation systems. Ultra low temperature butterfly valves play an irreplaceable role in China's petroleum and petrochemical, medical, and clean energy transformation fields. Design Features Triple eccentric structure: torque seal, butterfly plate opening and closing action without interference throughout the entire process. Floating sealing ring: solving the bi-directional sealing problem of ultra-low temperature butterfly valves. Long neck valve cover and drip board: prevent the packing from freezing at low temperatures, eliminate condensation or rainwater from flowing into the insulation layer. Low leakage combination packing: Achieve zero leakage sealing of packing for ultra-low temperature operation, meeting the low leakage requirements of LNG pipelines.