The new developed Resilent Seated Gate Valves bonnet  mold can be used for DIN3352 F4 series, BS5163 series,AWWA C515 series. According to the different needs of customers, the two types of bonnets can meet the needs of most customers. The new automatic casting line not only ensures good surface of the castings, the speed is also10 times that of the previous manual, which greatly improves the output of our production.