Tonglu Yongxin Valve Co.,Ltd. was founded in 1994, is one of the largest manufacturers in the production of valve,from Tonglu,China. Since 20 years' hard work, probity, and innovation "attention to detail, careful to do everything, has continued to move" to build the first national manufacturer of valve "and make unremitting efforts. Due to our scientific management and Seiko secret agents, as well as "to all customers, all services to the customer" philosophy respected, got the trust of new and old customers.
The plug valve, the opening and closing part (conical plug or ball) rotates around its center line. The plug valve USES the plug body with a through hole as the opening and closing part, and realizes the opening and closing action through the rotation of the plug body and the valve stem.