Cast Globe Valve

Valve plays an cut off in its line in the medium and the important role of throttle, cut-off valve, as a kind of extremely important truncated class valves, which exert torque on the valve stem seal, valve stem in axial direction to the pressure on the disc, the valve sealing surface and the valve seat sealing surface fit closely, prevent leakage of medium along the gaps between the sealing surface. The sealing surface of disc and seat is made of stellite cobalt-base hard alloy surfacing welding, which has the advantages of reliable sealing, high hardness, abrasion resistance, high temperature resistance, corrosion resistance, good abrasion resistance and long service life.Low temperature cut-off valve valve usually refers to working temperature below 110 ℃, widely used in liquefied natural gas (LNG), liquefied petroleum gas and other industries in low temperature.From 08 can make the suitable temperature 196 ℃ - stop valve, all parts using liquid nitrogen to low temperature pretreatment, completely avoid the deformation of seal leakage in the process.Heat preservation jacket globe valve adopts heat preservation jacket design and uses external heat source to heat the valve in external circulation, which can effectively prevent the temperature loss of medium when passing through the valve and ensure the temperature of medium.