Q347F - 2.5 (6) Hand wheel discharging ball valves with handwheels through the transmission mechanism to drive the ball valve opening and closing. Open-close position indicator to indicate. This valve sealing ring of macromolecule materials. To enhance the high temperature resistant performance and wear resistance. Sealing parts have automatic compensation function can guarantee the ball valve in the condition of high temperature performance. Sealing ring installed in the connection set inside, easy to change. This valve is suitable for dry dust containing gas, coal, cement and other material transport emissions control use of the system. Suitable for the occasion of site operation. This valve to the flow direction of medium when installation should be in line with the arrow on the body pointing in the direction.