Handle type fully welded ball valve Q61F DN32

The stem-type fully welded ball valve Q61F DN80 stem anti-off function is because the stem is affected by the pressure in the valve, which always generates a disengagement force, so the stem is designed as an anti-off structure. The thrust washer of low friction material is used to push the pressure towards the valve stem, so that the valve stem only serves to transmit torque. The sealing adopts carbon reinforced PTFE inclined elastic sealing ring with negative pressure on the spherical surface, so that the seal achieves zero leakage and long service life.