This article explains the key differences between compression molding and injection molding in PTFE lined valve manufacturing. It highlights how each process impacts sealing performance, corrosion resistance, durability, and cost. Compression molded PTFE lined valves offer a cost-effective solution for general corrosive applications, while injection molded valves provide higher precision and longer service life for demanding environments. A practical selection guide is included to help engineers and buyers choose the most suitable PTFE lined valve based on media, pressure, and system requirements.
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