PVC hydraulic screen changer adopts straight-through runner design, no dead corners, no material hiding, more suitable for PVC and other high-viscosity materials, can ensure smooth material flow, reduce the time of material retention in the runner, reduce the risk of material degradation. PVC hydraulic net changer its structure is relatively simple, the whole is more compact, occupies a small space, easy to install and maintain, can be used with different specifications of the PVC production equ