技术参数Specification
◆压力范围Pressure range
    最大工作压力Max working pressure 10bar
    双作用Double acting:2.5bar～8bar
    单作用Single acting:2.5bar～8bar
◆温度范围Temperature range
    90°±5°
◆润滑Lubrication
  所有动作的元件都涂有润滑剂，使用奉命长
  All the kinetic components are coated with lubricants,
  make it have a long service life
◆寿命Life time
  100万次One million time