平面阀座
FLAT SEAT

• 比较容易达到机加工和抛光精度。
  Machining, lapping to close tolerances is easy.
• 容易控制平面度公差。
  Flatness tolerance easy to control.
• 与阀座接触面积比较大。
  Area contact wide seat.
• 可通过所匹配的阀座表面导引阀瓣。
  Disc is guided by the mating surface of the seat.
• 硬质止推轴承垫防止磨损。
  Hard thrust pad prevents galling.
• 在线维护更加迅速。平面阀座面能够研磨和检查，较容易实现平面度。
  Faster maintenance in-line. Flat seating faces can be lapped and checked for flatness easier.

• 线接触密封。
  Line contact seal.
• 即使采用相同的阀杆和轭架，接触压力也能够增加1.5至5倍。
  Contact pressure increase by 1.5 –5 with same stems and yokes.
• 阀座更加有弹性。
  Seat has greater elasticity.
• 关闭扭矩比较低。
  Lower closing torques.
• 建议用于高压高温场合。
  Recommended for high pressure-temperature.