特点 - PVC，CPVC
Features - PVC, CPVC

　　这种坚固、经过实践考验的结构特别适用于各种化工、工业和灌溉应用领域。美国斯毕尔公司闸阀可以配置各种端口连接方式。在DN15至DN50, DN65和DN80的各个通径范围内的阀门具有各自独特的特点，而所有特性在重型工业级别的DN100通径阀门上都具备。有关DN150通径的阀门，请参阅美国斯毕尔公司的旋塞闸阀页面。
　　This solid, proven design is well suited for a variety of chemical, industrial and irrigation applications. Spears® Gate Valves are feature-packed with a variety of end connector options. Individual special features are found in each size range ¹/₂" through 2", 2¹/₂" & 3", and in the full featured Heavy Industrial 4" valve. See Spears® Plug Gate Valves for 6" size.

• 重型阀体PVC和CPVC材料结构
  Heavy Bodied PVC & CPVC Construction
• 具有特殊结构密封面的锥形楔板
  Tapered Wedge with Specially Designed Sealing Surface
• 不升杆（暗杆）阀杆结构
  Non-Rising Stem Design
• 专利的应变力平衡阀杆/楔板螺纹
  Patented Strain-Equalizing Stem/Wedge Thread
• 替代填料的O形环阀杆密封 - 不需要重新紧固
  O-ring Stem Seals Instead of Packing - No Retightening Required
• Buna-N, EPDM或Viton®材质O形环密封
  Buna-N, EPDM, or Viton® O-ring Seals

• 积极有效的抓握，高强度抗冲击聚丙烯手轮操作器
  Positive Grip, High Impact Polypropylene Handwheel Operator
• 完全可维修、可更换的部件 - 不需要移动阀门即可进入维修或更换
  Fully Serviceable, Replaceable Components - Accessible Without Valve Removal
• 美国国家卫生基金会NSF认证可用于饮用水
  NSF Certified for Potable Water use
• 适用于真空应用
  Suitable for Vacuum Service
• 采用无硅树脂、水溶性润滑剂组装而成
  Assembled with Silicone-Free, Water Soluble Lubricants
• 可提供公制承插连接端口和英制螺纹连接端口，通径DN15 ~ DN50
  Metric Socket and BSP Thread Available, ¹/₂" - 2"

DN15 ~ DN50通径的PVC和
CPVC材质重型闸阀
¹/₂" - 2" PVC & CPVC Heavy
Duty Gate Valves

• 可提供承插、螺纹或法兰连接端口
  Availeble with socket, threaded or flanged end connectors
• 压力等级为200 psi @ 23^oC。
  法兰阀门的压力等级为150 psi @ 23^oC
  Pressure rated to 200 psi @ 73^oF. Flanged Valve Pressure Rated to 150 psi @ 73^oF

DN65和DN80通径的PVC和
CPVC材质重型闸阀
2¹/₂" & 3" PVC & CPVC
Heavy Duty Gate Valves

• 可提供承插、SR（特别加固）螺纹或法兰连接端口
  Available with socket, SR (Special Reinforced) threaded or flanged end connectors.
• 压力等级为150 psi @ 23^oC
  Pressure rated to 150 psi @ 73^oF.
• 可提供2英寸方形/T形操作螺母供选择
  Optional 2" Square/T-Style Operator Nut available.

　　注：DN65通径的阀门是加了衬套的DN80通径的阀门。
　　Note: 2¹/₂" size is a bushed down 3" valve.

DN100通径的PVC和
CPVC重型工业闸阀
4" PVC & CPVC
Heavy Industrial Gate Valves

• 可提供承插、SR（特别加固）螺纹或法兰连接端口
  Available with socket, SR (Special Reinforced) threaded or flanged end connectors.
• 压力等级为235 psi @ 23^oC。
  法兰阀门压力等级为150 psi @ 23^oC。
  Pressure rated to 235 psi @ 73^oF. Flanged Valve Pressure Rated to 150 psi @ 73^oF
• 316不锈钢材质的阀盖和五金件
  SS 316 Exterior Bonnet & Hardware
• 内置明显的位置指示器
  Built-in Quick-View Position Indicator
• 可提供2英寸方形/T形操作螺母供选择
  Optional 2" Square/T-Style Operator Nut available.

工程规格说明书范文
Sample Engineering Specification

　　所有热塑性塑料闸阀应该采用的结构材料是PVC类型I分类12454或CPVC类型IV分类23447。所有O形环材质应该是Buna-N, EPDM或Viton®。所有阀门应该配置不升杆（暗杆）阀杆和聚丙烯手轮。所有阀门的楔形闸板应该采用应变力平衡螺纹。PVC阀门应该配置聚丙烯楔板，而CPVC阀门应该配置CPVC楔板。所有阀门部件应该是可更换的。在水温23^oC条件下，所有DN15至DN50通径的阀门压力等级应该是200 psi，所有DN65至DN80通径的阀门压力等级应该是150 psi，所有DN100通径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 thermoplastic Gate Valves shall be constructed from PVC Type I Cell Classification 12454 or CPVC Type IV Cell Classification 23447. All O-rings shall be Buna-N, EPDM or Viton®. All valves shall have non-rising stem and Polypropylene handwheel. All valve gate wedges shall have Strain-Equalizing threads. PVC valves shall have Polypropylene wedge and CPVC valves shall have CPVC wedge. All valve components shall be replaceable. All ¹/₂" through 2" valves shall be pressure rated at 200 psi, all 2¹/₂" through 3" valves shall be pressure rated at 150 psi, and all 4" valves shall be pressure rated at 235 psi for water at 73^oF, as manufactured by Spears® Manufacturing Company.