Valve leakage is quite common in natural gas fields and stations, and there are several reasons behind it.
Sealing structure The sealing pair works under external pressure. No sealing material is completely rigid, so small deformation is unavoidable when force is applied. For liquid or gas media, these tiny deformations can turn into leakage paths. Different sealing structures deliver different sealing results. For instance, face seal and line seal behave differently in service.
Quality of the sealing pair The quality of a sealing pair comes down to material selection, surface matching and machining precision. With the same surface fit and machining accuracy, materials with better plasticity usually seal better. But if the sealing surfaces don't match properly, even high machining precision can't fix the problems caused by mismatched profiles.
We keep these key factors in mind during valve design and manufacturing, to deliver reliable sealing performance for your natural gas projects. Feel free to check our website www.trlanvalve.com if you want to know more.