Corrugated tube eliminates the possibility of external leakage
The upper valve cover adopts a bellows valve sealing structure, which can completely eliminate the possibility of process media leaking from the valve stem movement gap. This is one of the significant features of the bellows seal valve. Due to the deformability and outstanding aging resistance of the bellows components, this regulating valve completely overcomes the weaknesses of packing aging and temperature sensitivity that usually exist in packing seal valves. Secondly, the double sealing structure of bellows and packing is adopted for better safety and reliability. Therefore, it is widely used in automatic control systems for rare and special media such as highly toxic, highly corrosive, and radioactive media. The regulating valve is equipped with a multi-spring diaphragm actuator, which has a compact structure and a large output force. Leakage: Metal seat: conform to the standard ANSIB16.104VI, less than 0.5℅ of the rated Cv; PTFE valve seat: standard conform to the ANSIB16.104VI, less than the 10-7 differential of the rated Cv: 5℅ (not With locator); 3℅(with locator) linearity: ±11℅(without locator); ±3℅(with locator) Remarks: Standard V-shaped PTFE packing is used.