焊接安置阀座环
　　Welded-in Seat Ring

• 阀座环通过密封焊接装配，有助于消除泄漏通道。
  Seat ring is seal welded to eliminate leak path.

　　短时排放
　　Fugitive Emissions

• 小于100 ppm，符合标准要求。
  Less than 100 ppm with standard requirements.

　　这些阀门符合下列标准的应用要求
　　These valves comply with the applicable requirements of the following standards:

• API 598
• API RP591
• ASME B16.34
• ASME B16.25
• ASME B16.10
• ASME B16.5

• 标准配置的材料为ASTM A216等级WCB。
  Standard material is ASTM A216 Grade WCB.
• 标准配置的阀内件XU (13%铬到硬面)，适用于广泛的应用范围。
  Standard trim is XU (13% CR to hardface) which is suitable for a wide range of applications.
• 参阅《工程技术资料》章节，了解连接端口法兰尺寸和钻孔模板。
  See 'Technical Data" section for end flange dimensions and drilling templates.
• 除非另有特别规定，否则通径DN600以下阀门的对焊连接端口经过镗孔以适应标准管道。请参阅《工程技术资料》样本了解有关细节。
  Butt weld ends on valves 24" and smaller are bored to match standard pipe unless otherwise specified. See Engineering Data catalog for details.
• 参阅《工程技术资料》章节，了解旁路，攻丝和排泄。
  See Engineering Data section for locations of by-passes, taps, and drains.