1、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。
2、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 opera
3、tors 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 bub
4、ble-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 Part
5、s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 ASTM A216 WCB ASTM A351 CF8M ASTM A352 LCB/ Bonnet球体 Ball ASTM A216 WCB / A105+ENP ASTM A182 F316 ASTM A351 CF8M ASTM A350 LF2ASTM A352 LCB+ENP阀杆 Stem ASTM A105+ENP ASTM A182 F316 ASTM A182 F304阀座 Seat Ring Nylon & Glassed
6、 Filled PTFE Nylon & Glassed Filled PTFE Nylon & Glassed Filled PTFE阀座支承圈 Seat Retainer ASTM A105+ENP ASTM A182 F316 ASTM A350 LF2+ENP枢轴 Trunnion ASTM A105+ENP ASTM A182 F316 ASTM A182 F304枢轴轴承Trunnion Bearing304 with PTFE Lined316 with PTFE Lined304 with PTFE Lined垫片 Gasket 304 Spiral Wound Graphit
7、e 316 Spiral Wound Graphite 304 Spiral Wound Graphite填料 Packing Flexible Graphite Flexible Graphite Flexible GraphiteO 型密封圈 O-Ring Seals NBR NBR NBR阀座弹簧 Seat Spring 17-7PH 17-7PH 17-7PH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 Steel Stainless Steel Stainless Steel
