PTFE Line Material and Different Valve Options for Corrosive Environments
PTFE (polytetrafluoroethylene) is a commonly used material for lining pipes and valves in various industries due to its excellent chemical resistance and low friction properties. When it comes to valves, there are several different types that can be used in conjunction with PTFE-lined pipes. Here are a few examples:
Ball valves: Ball valves have a spherical closure element with a hole through its center. When the valve is open, the hole aligns with the pipe, allowing flow. When the valve is closed, the ball rotates to block the flow. PTFE-lined Ball Valves are commonly used for corrosive applications, where the PTFE lining provides chemical resistance and the ball design ensures tight shut-off.
Butterfly valves: Butterfly valves consist of a disk-shaped closure element that rotates about an axis perpendicular to the flow. The disk can be fully open or fully closed, or positioned at various angles to regulate flow. PTFE-lined butterfly valves are suitable for corrosive media and provide good sealing performance.
Diaphragm valves: Diaphragm valves use a flexible diaphragm as the closure element. The diaphragm is positioned between the valve body and a compressor, and when the compressor is actuated, it presses the diaphragm against the valve seat to shut off flow. PTFE-lined diaphragm valves are often used in applications where the media is corrosive or contains solids, as the PTFE lining provides excellent chemical resistance and prevents the media from contacting the valve body.
Plug valves: Plug valves have a cylindrical or tapered plug with a hole that can be aligned with the pipe to allow flow or turned perpendicular to the pipe to block flow. PTFE-lined plug valves are utilized in corrosive environments where the PTFE lining acts as a barrier between the media and the valve body, protecting it from chemical attack.
These are just a few examples of valves that can be used with PTFE-lined pipes. The choice of valve depends on factors such as the application, the type of media being transported, the pressure and temperature conditions, and other specific requirements. It is important to consult with industry professionals or valve manufacturers to select the most suitable valve for a particular application.
