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Why is PTFE used in industrial valves?

PTFE has many outstanding properties which make it suitable for use in industrial valves. It is an inert compound, meaning that is extremely unreactive and stable when it comes into contact with a large range of aggressive or corrosive substances, such as chlorine and hydrogen fluoride. This also means it is well suited for use in food manufacturing.

PTFE is able to operate in a wide temperature range, from -270°C to +260°C and is additionally very resistant to most chemicals and environmental factors such as a UV-rays and ozone.

For industrial applications with aggressive media or with demanding anti-friction requirements, PTFE is the most widely used fluroplastic worldwide.

What is PTFE? - From accident to universal material

PTFE (Polytetrafluoroethylene) is a high-performance polymer, which was discovered by accident about 100 years ago during attempts to create a new refrigerant. From these humble beginnings, PTFE is now used in many everyday items, from non-stick pans to waterproof clothing.

PTFE belongs to the fluoropolymers and is classified as a thermoplastic due to its one-dimensional, chain-formed carbon and fluorine molecule.

By adding Perfluoropropylvinyl Ether (PPVE) during the polymerisation process, modified PTFE and PFA (perfluoroalkoxy alkane) can be produced, providing a greater range of durability & permeation resistance compared to virgin PTFE.

ChemFlyer - Model CST - PTFE Lined Butterfly Valve - Brochure