The valve has character of axis of symmetry and type of wafer connection .The disc lined PTFE is made of nodular cast iron and seat is made of PTFE . It is suitable for temperature 40 degrees below zero to 200 degrees above 200 . Corresponding handle ,worm gear , pneumatic and electric actuator are attached to it for closing and opening .
主要零部件材质 Materials of Main Parts:
主要连接尺寸及重量：Outline Dimensions & Connection Dimensions & Weight: