To maintain the durability and increase the resistance to such factors, there is a lining made of a special polymer called PFA inside the valve. PFA (perfluoroalkoxy) belongs to the fluoropolymer family. It has strong chemical resistance and mechanical strength, which ensures no fluid leakage from the valve.

PFA (Perfluoroalkyl vinyl ether resin) is inherently provided with thermal stability, chemical resistance and good mechanical properties, which are equal to or even better than those of PTFE, while it has overcome PTFE's difficulty with thermoplasticity.

What is the Platelet Function Assay (PFA) test? The PFA test is a new laboratory screening test of platelet function that measures both platelet adhesion and aggregation (primary hemostasis).