Integral ball valve, integral flange high temperature ball valve (instead of gate valve,globe valve,rapid blowdown valve)is a new product of steam valve upgrading,sealing seat with high temperature resistance, wear resistance, corrosion resistance, resilience, good lubrication of high strength carbon graphite,service life is 3-5 times higher than the general ball valve,the use of temperature 250-400℃, Applicable media-water vapor,oil,thermal oil,acid,etc.,is the current project in the promotion of products.