Bathroom Sanitary Ware, Stainless Steel Sanitary Ware, Traditional Sanitary Ware, Kitchen Sanitary Ware ZHEJIANG KINGSIR VALVE CO., LTD. , https://www.kingsirvalve.comChlor-alkali Fluorine plastic lined ball valve is a ball with a circular hole opening and closing pieces, the ball with the stem around the valve body center line rotation in order to achieve the purpose of valve opening and closing.