Some of our customers have had success processing flexible PVC using hot runner manifold systems that are built with DME hot runner components. Polyvinyl Chloride (PVC) has a unique property of having a degradation temperature that is typically lower than the resin injection processing temperature, which means that if you successfully process flexible PVC, you are immediately generating hydrochloric acid which will corrode the surrounding manifold steel. In such cases it is recommended to build the manifold system using stainless steel components, thereby maximizing component life. However, it cannot be guaranteed as to how long a DME component will last when subject to hydrochloric acid on a regular basis. For this reason customers who do purchase DME components for processing flexible PVC, will typically build their own manifolds to help offset the increased cost of system maintenance over the life of the tool.