大肥屁股白浆一区二区_都市校园春色激情国产_久久伊人亚洲精品_欧美黄色网站观看互动交流_亚洲av一级夜夜_无码h黄肉3d动漫在线观看_日本三级综合色啪_靠比久2021年精品国产福利在线_国产乱伦精品一区_日本在线看片

Z47F Gas Dedicated Buried Plate Valve product Structure Features
1, the valve body using casting structure. 
2, the seat with O-ring seal and preload force applied to the floating valve seat structure, so that the two-way valve inlet and outlet seal; and the structure of the opening and closing torque only ordinary valve 1/2, to easily open, off valve. 
3, the seat with PTFE seal on the surface, with PTFE pairs of metal and metal to metal seal, PTFE sealing surface at the same time remove the role of the dirt gate. 
4, the valve gate, either fully open or fully closed with the sealing surface is always consistent with the sealing surface is protected from direct erosion of the media, thereby extending the service life. 
5, the valve is fully open, the passage is smooth, the flow resistance coefficient is very small, no pressure loss, can pass the hair ball cleaning pipeline. 
6, when the valve is closed, it can automatically remove the lumen high pressure (see working principle diagram), to ensure the safe use. 
7, the use of closed gear rotation opening and closing instructions institutions, long-term clearly reflect the valve opening and closing situation. 
8, Buried valve surface with epoxy coal tar preservative treatment, with the same life pipeline. One-piece flange stainless steel high temperature ball valve, flange stainless steel high temperature ball valve, stainless steel ball valve. 
 
Z47F Gas Dedicated Buried Plate Valve product performance parameters