Disadvantages of elastic support: Spring stress tends to concentrate, resulting in fatigue and fracture.

Disadvantages of plastic support: Long-term compression causes cold flow and creep of PTFE materials.

Disadvantages of rigid support: Difficulty in accurate tolerance calculation.

None of the above supporting structures can completely solve the ball sinking problem of ball valves. Sealing performance can only be maintained by increasing spring force and specific pressure, which will lead to excessive stress, premature failure of valve seats and even valve seat shear damage.

Active Support — Completely Solve the Ball Sinking Problem

Adjust via support bolts to completely eliminate gaps between gaskets and spheres caused by tolerance accumulation.

Thoroughly resolve ball sinking and premature leakage resulted from cold flow of valve seats.