PTFE Lined Valves: Chemical Compatibility Chart
Technical guide · Supreme Valves India · 2026
PTFE lined valves isolate aggressive chemicals from metal bodies. The lining covers wetted surfaces — body bore, disc, and sometimes stem — so only fluoropolymer contacts the process fluid.
PTFE vs FEP vs PFA
- PTFE — broad chemical resistance, economical
- FEP — lower permeation in some services
- PFA — higher temperature fused linings
Validate concentration and temperature against the liner manufacturer's chemical compatibility chart before purchase.