Lined vs Alloy Chemical Valve
PTFE/PFA lined vs Hastelloy/Alloy 20 — cost, temperature, permeation.
Selection notes
Match the construction to media, temperature, pressure class, and end standard. EPC BOQs often mix ANSI and DIN language — confirm flange facing and bolt circle before ordering.
Supreme Valves India quotes both constructions from the same package RFQ when sizes and ratings are listed clearly.