PTFE (Polytetrafluoroethylene) and PFA (Perfluoroalkoxy) are both fluoropolymers with excellent chemical resistance and non-stick properties. However, PFA offers better mechanical strength and higher temperature resistance, making it suitable for more demanding applications with aggressive chemicals and elevated temperatures.
These valves are widely used in chemical processing, pharmaceuticals, water treatment, food & beverage, petrochemical, and semiconductor industries. Their ability to handle corrosive media and high-purity applications makes them essential in environments requiring safe and contamination-free fluid handling.
Yes, both PTFE and PFA lined ball valves can withstand elevated temperatures, typically up to 200°C (392°F) for PTFE and even higher for PFA. They also perform well in cryogenic applications, offering stability and chemical resistance across a wide temperature range.
No, these valves require minimal maintenance due to the self-lubricating nature of PTFE and PFA, which reduces friction and wear. Their non-stick properties prevent media build-up, lowering the risk of blockages and ensuring long-lasting performance with less downtime.
Yes, these valves provide bubble-tight shutoff, ensuring zero-leakage performance in critical process lines. The lining prevents chemical attack on the internal components, maintaining a secure and reliable seal even in aggressive fluid handling applications.
Selecting the right Valpes Electric Actuator involves considering several factors, including the type and size of the valve, the required torque, the operating environment, and the control functionality needed. It's important to assess these parameters to ensure the actuator matches the application requirements for optimal performance and longevity.
Unlike standard metal ball valves, PTFE / PFA lined valves provide superior corrosion resistance, especially in applications involving acids, alkalis, and aggressive chemicals. While metal valves may corrode over time, PTFE/PFA linings offer long-term durability without degrading or reacting with harsh media.
These valves are designed to handle moderate pressure applications, typically up to 16 bar (230 PSI), depending on the valve size and manufacturer. While they excel in chemical resistance, they are not recommended for extremely high-pressure systems where metal-seated valves would be more suitable.
While these valves provide excellent chemical resistance, they are not ideal for highly abrasive fluids that can erode or wear down the lining over time. If the application involves suspended solids or abrasive slurries, alternative valve materials like ceramic or hardened metal coatings may be a better choice.
Yes, these valves can be fitted with pneumatic, electric, or hydraulic actuators, allowing for automated flow control. They are compatible with a wide range of control accessories, making them ideal for integration into industrial process automation systems.
Key factors include chemical compatibility, temperature and pressure ratings, media type, and actuation requirements. It’s crucial to match the lining material to the specific process conditions to maximise valve performance and longevity.
The lifespan depends on the operating conditions, chemical exposure, and frequency of use, but PTFE/PFA lined valves are known for their long service life. With proper maintenance and correct application, they can last for many years without performance degradation.
