Electric flange hard sealing butterfly valveNominal diameter DN(mm)DN50~DN500Nominal pressure0~1.6MPaTest pressureStrength testPN1.5MPaPN1.6MPaSealing testPN1.1MPaPN1.76MPaMain spare partsValve bodynodular cast iron, cast steel, cast stainless steelValve boardGray Cast iron,nodular cast iron, forged steel, stainless steel, etc.Valve shaftCarbon steel, stainless steelSealing circleRubber, teflon, EPDMPaddingTeflon, soft GraphiteApplyable working conditionApplyable mediumWater, steem, oil, nitric acid, acetic acidApplyable temperatureCarbon steel: -29℃~+425℃ Stainless steel: -40℃~+650℃1. This valve adopts the three-eccentric sealing structure, and the seats and disc plates are nearly free of abrasion, and the sealing function is more and more tight.2. The sealing ring choose stainless steel, has the dual advantages of metal hard seal and elastic sealing no matter in the case of low or high temperature, it has good sealing performance in both, corrosion resistance, long service life, etc.3. The sealing surface of plate is covered with cobalt hard alloy, the sealing surface is corrosion-resistant,and the service life is long.4. This valve has a two-way sealing function. It is not restricted by the media flow when installed, and it is not affected by the space position. It can be installed in any direction.
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