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Contact SupplierGeneral Design Blow-out proof stem, anti-static device are designed as standard requirements. Superior Sealing High precision machining and seat to ball rubbing, as well as adopt seat spring structure, which push up stream seat tightly against the ball surface, result in superior ball and seat interfacing for reliable sealing conforming to ANSI/FCI 70-2 class V. Stem Seal Belleville spring acted gland provides live-loading on stem packing. Equipped with Special low emission packing, the environmental friendly valve is available on request. Reliable Operations Spring-loaded seat maintain close contacting with the ball ensuring tight sealing even at low pressures. This also results in stable operating torques at high differential pressures over a wide range of temperatures or/and high frequency. Material Selection Various materials can be chosen from for the ser vice up to 500°C. For ser vice temperature above 300°C the extension bonnet is required. Fire Safe The features of metal seated and graphite sealing to guarantee to pass requirement of fire safe testing. Applications Hard faced ball and seats (TCC as standard, other special coatings are available on request) allow the valve to be used in more severe ser vices such as slurries, pulp stock, mining and other abrasive media in long life.