特点 - PVC，CPVC
Features - PVC, CPVC

　　美国斯毕尔公司真活接True Union 2000工业T形球阀结构组合阀门与T形管件，用于从侧面分支直接分流的应用场合。T形阀门的连接更加牢固，更加紧凑，不需要缩径管，不需要额外的管道长度，也不需要球阀的一个连接端口。阀门与主管道连接更加紧密，犹如“零死角”结构，因此最大程度较少流体停滞区域。可以根据用户要求定制所需的T形和阀门连接通径。还可提供公制通径的产品。
　　Spears® True Union 2000 Inndustrial Tee-Style Ball Valve design integrates valve and Tee-fitting for direct branch take-off laterals. The "Tee-Valve" provides a stronger, more compact connection by eliminating the need for a reducer, additional length of pipe, and one of the end connections on the ball valve. Close proximity of valve to mainline emulates a "zero dead-leg" design to minimize any areas of fluid stagnation. Custom produced to specified Tee and Valve connection sizes. Also available in metric sizes.

• 耐化学品和耐腐蚀的PVC，CPVC或低离子含量的LXT PVC材质
  Chemical & Corrosion Resistant PVC, CPVC or Low Extractable LXT PVC materials
• 具有多项优点的工业级产品
  Multi-featured Industrial Grade
• 内置手柄锁定装置
  Built-in Handle Lockout
• 完全可维修、可更换部件
  Fully Serviceable, Replaceable Components
• 包括密封托架调节工具
  Seal Carrier Adjustment Tool included

• ISO模式的执行机构安装选项
  ISO Pattern Actuation Mounting Option
• 美国斯毕尔公司双重O形环Safe-T-Shear®阀杆
  Spears® Dual O-ring Safe-T-Shear® Stem
• 自我调节的PTFE浮动阀座
  Self Adjusting PTFE Floating Seat
• 通径DN15~DN50压力等级为235 psi @ 23^oC
  Sizes ¹/₂" - 2" Pressure Rated to 235 psi @ 73 ^oF
• 美国国家卫生基金会NSF认证可用于饮用水应用场合
  NSF Certified for Potable Water Use

工程规格说明书范文
Sample Engineering Specification

　　所有阀门侧面分支连接应该采用整体T形球阀和T形管件组合结构。T形球阀应该是真活接True Union 2000工业阀门，按照美国材料实验协会ASTM F 1970标准制造，并采用下列材料，PVC类型I，ASTM D 1784分类12454，或CPVC类型IV，ASTM D 1784分类23447，或低离子含量LXT PVC，ASTM D 1784分类12343。所有O形环材质应该是EPDM或Viton®。所有阀门应该配置双重O形环阀杆密封的Safe-T-Shear®阀杆。所有阀门手柄应该采用聚丙烯材质，并内置锁定装置。所有阀门活接头螺母应该采用锯齿螺纹。所有密封托架应该是Safe-T-Blocked®结构。所有阀门部件应该是可更换的。主管道T形管件应该满足Schedule 80壁厚标准，并根据美国材料实验协会适用于PVC材质的D2467标准或适用于CPVC材质的F439标准制造。所有阀门应该通过美国国家卫生基金会NSF国际部认证可用于饮用水应用场合。在水温23^oC下，所有DN15至DN50的阀门压力等级应该是235 psi，并由美国斯毕尔制造公司制造。
　　All lateral branch valve connections shall be made using integrated Tee-style ball valve and Tee fitting. Tee-style ball valves shall be True Union 2000 Industrial type manufactured to ASTM F1970 and constructed from PVC Type I, ASTM D 1784 Cell Classification 12454 or CPVC Type IV, ASTM D1784 Cell Classification 23447; or Low Extractable LXT PVC, ASTM D 1784 Cell Classification 12343. All O-rings shall be EPDM or Viton®. All valves shall have Safe-T-Shear® stem with double O-ring stem seals. All valve handles shall be polypropylene with built-in lockout. All valves union nuts shall have Buttress threads. All seal carriers shall be Safe-T-Blocked®. All valve components shall replaceable. Mainline Tee fittings shall be Schedule 80 manufactured in accordance with ASTM D2467 for PVC or F439 for CPVC. All valves shall be certified by NSF International for use in potable water service. All ¹/₂" through 2" valves shall be pressure rated to 235 psi for water at 73 ^oF, as manufactured by Spears® Manufacturing Company.