锥形阀座*
CONICAL SEAT*

平面阀座*
FLAT SEAT*

结构特征：
DESIGN FEATURES:

• 不旋转阀杆具有精密梯形螺纹和经过抛光的表面光泽度。
  Non-rotating Stem with precision Acme threads and burnished finish. Valve suitable for horizontal installation.
• 通用的Trim. 13 CR阀杆，13 CR覆面阀瓣和钨铬钴合金6覆面阀座API Trim 8适用于454^oC的场合。
  Universal Trim. 13 CR stem, 13 CR faced disc and Stellite 6 faced seats API Trim 8 suitable for service up to 850°F.
• 阀座面为钨铬钴合金，经过研磨抛光达到镜面光洁度。锥形阀座经过机加工，精度达到8 RMS。
  Seat face Stellited, ground and lapped to a mirror finish. Conical seat machined to 8 RMS.
• 平面阀瓣。浮动的阀杆-阀瓣啮合，13 CR、钨铬钴合金6、不锈钢316或蒙乃尔表面硬化、研磨抛光的阀座。表面钨铬钴合金6硬化的316不锈钢阀瓣也可供用户选择。
  Flat disc. Floating stem-disc engagement, hardfaced with 13 CR, Stellite 6, SS 316 or Monel, ground and lapped with seat. Disc in SS 316 hardfaced with Stellite 6 also available.
• 锥形阀瓣。阀瓣通过啮合阀座表面进行导引，阀座表面经过13 CR、钨铬钴合金、316不锈钢或蒙乃尔硬化、研磨抛光。表面钨铬钴合金6硬化的316不锈钢阀瓣也可供用户选择。DN50-DN150的阀门可以配置实心CA15 (13 CR)阀瓣。
  Tapered disc. Disc is guided by the mating surface of the seat, hardfaced with 13 CR, Stellite 6, SS 316 or Monel, ground and lapped with seat. Disc in SS 316 hardfaced with Stellite 6 also available. 2–6" (50–150 mm) valves may have solid CA15 (13 CR) discs.
• 阀体和阀帽。铸件经过精密加工。一体式阀帽有利于校准和减少部件数量。
  Body and bonnet. Castings are precision machined. One-piece bonnet for better alignment, fewer parts.
• 填料箱抛光度达到63 RMS以上。
  Stuffing box finish to 63 RMS or better.
• 阀体和阀帽连接部位经过精密机加工。全封闭密封垫。密封垫材料请参阅第3页。详细资料请参阅第13页。
  Body and bonnet joint accurately machined. Fully enclosed gasket. Gasket materials on page 3. Details on page 13.
• 压盖是两件式结构，校准更加容易。
  Gland has two-piece construction for easy alignment.
• 旋转阀杆螺母。奥氏体球墨铸铁Gr. D-2C, 可在线更新。
  Rotating Stem nut. Austenitic ductile iron Gr. D-2C, renewable in-line.
• 转矩臂。有利于减少密封环上的磨损，改善密封性能，减少扭矩。
  Torque arm. To reduce wear on packing rings, to enable better sealing and to reduce torque.
• 冲击式手轮。在阀座直径和压力等级相同的情况下，截止阀和截止止回阀的关闭扭矩比闸阀大。要做到紧密关闭，最经济的机械装置就是冲击式手轮。同时撞击手轮下方的两个铸造凸耳，能够提供相当于标准手轮3至10倍的关闭力。除非用户指定（参阅第21页），否则制造商将自行决定是否采用冲击式手轮。
  Impactor handwheels. Globe and stop check valves require higher closing torques than gate valves with the same seat diameter and pressure class. The most economical mechanism for tight shutoff is the impactor handwheel. Two lugs cast under the wheel strike simultaneous blows and give 3–10 times the closing force of standard handwheels. Impactor handwheels are supplied at manufacturer’s option unless specified by customer (see page 21).
• 法兰：150-300磅级：¹/₁₆" 凸面。600磅级：¹/₄" 凸面。所有阀门表面光洁度为125-250 AARH。
  Flanges. Class 150–300: ¹/₁₆" raised face. Class 600: ¹/₄" raised face. Finish 125 –250 AARH for all valves.