球阀各部分英语名称.doc

产品详细说明主要设计特点－Main Designing Features·       进口和出口双向密封功能         Seal on up-stream and down-stream sides of valve·       双阻塞泄放功能         Double block and bleed function·      凸起的防火唇作为金属辅助密封阀座，符合API 607标准的防火要求         The raised fire-lip acts as metal backup seat meeting API 607 through leakage requirements·       防静电装置         Anti-static device·       内装式阀杆设计，防止阀杆喷出         Anti-blow out stem is a backseated design.·       2组O型密封圈，可有效防止泄漏         Two set of O-ring seals efficiently prevent leakage·       密封剂注入器设计，可在紧急状态下注入密封胶，对阀杆或阀座进行密封         Sealant injection fittings for emergency stem or seat sealing·       可选择的操作：提供手动、气动、电动等驱动方式         A wide choice of handle, gear, electrical, pneumatic or hydraulic operators can be supplied.·       可选择的锁定装置         Optional locking device·       符合NACE规范要求         All ball valves can be supplied in full compliance with NACE MR0175 Standard.·       带波形、碟形、或圆柱螺旋形弹簧的浮动阀座设计         A floating seat with wave / disc / cylindrical spring design is provided.         ·低压时阀座在弹簧预紧力的作用下，保证球与阀座间的低压密封 The preload of spring ensures bubble-tight sealing of ball and seat at low pressure.         ·高压时阀座唇与球体全面接触，确保阀门的可靠密封性和较低的操作扭矩At high pressure, the seat lip deflects slightly to ensure full seat-to-ball contact. This results in reliable sealing at high pressure and low operating torque. 主要零件标准材料规范 Standard Material Specification for Main Parts零件名称碳钢Carbon Steel不锈钢Stainless Steel低温碳钢Low Temp. Carbon Steel阀体、阀盖Body / BonnetASTM A216 WCBASTM A351 CF8MASTM A352 LCB球体BallASTM A216 WCB / A105+ENPASTM A182 F316 ASTM A351 CF8MASTM A350 LF2ASTM A352 LCB+ENP阀杆StemASTM A105+ENPASTM A182 F316ASTM A182 F304阀座Seat RingNylon & Glassed Filled PTFENylon & Glassed Filled PTFENylon & Glassed Filled PTFE阀座支承圈Seat RetainerASTM A105+ENPASTM A182 F316ASTM A350 LF2+ENP枢轴TrunnionASTM A105+ENPASTM A182 F316ASTM A182 F304枢轴轴承Trunnion Bearing304 with PTFE Lined316 with PTFE Lined304 with PTFE Lined垫片Gasket304 Spiral Wound Graphite316 Spiral Wound Graphite304 Spiral Wound Graphite填料PackingFlexible GraphiteFlexible GraphiteFlexible GraphiteO型密封圈O-Ring SealsNBRNBRNBR阀座弹簧Seat Spring17-7PH17-7PH17-7PH螺栓/螺母Bolts/NutsASTM A193 Gr.B7ASTM A194 Gr.2HASTM A193 Gr.B8ASTM A194 Gr.8ASTM A320 Gr.L7ASTM A194 Gr.4注油器Injection Fittings泄压阀Bleed ValveStainless SteelStainless SteelStainless Steel。