The Shut-off Valve Should Use Hard Seal As Far As Possible

The cut-off valve requires the lower the leakage, the better. The leakage of the soft-sealed valve is the lowest. Of course, the cut-off effect is good, but it is not wear-resistant and has poor reliability. From the double standard of small leakage and reliable sealing, soft sealing is not as good as hard sealing. For example, the full-function ultra-light regulating valve is sealed and piled with wear-resistant alloy protection, with high reliability and a leakage rate of 10-7, which can already meet the requirements of the shut-off valve.