PTFE vs PFA vs Rubber Lined Valves: A Complete Buying Guide for Industrial Applications Once a plant decides that a lined valve is the right solution for a corrosive or abrasive application, the next question is almost always: which lining material is right for this specific job? With PTFE, PFA, FEP, and rubber all commonly available, and each offering different strengths in temperature tolerance, chemical resistance, and abrasion handling, choosing the wrong lining can mean early...