A. Feature of UHV All Metal Gate Valve
       - Pressure range : UHV to 1,000 Torr
       - Leak rate : <  1x10^-10 Torr L/s
       - Bakeable : <  200℃ (Valve body)
                            <  80℃ (actuator & indicator)
        - Flange type : CF-F 4.5inch
        - Material : SUS304 (Body & bonnet)
                           SUS300 series (gate & etc.)
                           SUS series (bellows housing)
                           Al6061 (actuator housing)
         - Bonnet seal : OFEC gasket
         - Manually actuated gate valve are equipped with
               a spindle handle with a magnetical position indicator.