Valve stem leakage is mainly divided into external leakage and internal leakage, and liquefied natural gas is flammable and explosive, so external leakage has a greater risk. Stem seal leakage in the overall leakage of the main reason and ultra-low temperature valve stem seal, is usually the use of elastic storage ring, low temperature sealing ring and packing.

In order to fully ensure the low temperature sealing performance, the valve stem sealing structure uses a variety of sealing elements combined with the combination of sealing structure, but also need to use additional elastic composite device, such as the butterfly spring gasket, in low temperature conditions can make the packing pretension compensation, to ensure the packing sealing effect.

ZJCLV uses the packing of PDFE, and has a better sealing of ultra-low temperature valve. Our valves have professional technical support. Trust us, trust ZJCLV. For more information, click on the website: www.clvvalve.com.