This is a valve.If you are interested in our products,please feel free to contact with us. We special produce PTFE ball Valve, FEP Butterfly, PP butterfly valve,PVDF butterfly valve and PO Butterfly Valve. Our PTFE butterfly valve widely used in rust liquid line,so our valve have the advantage of anti-rust function. Our valve can be used in many special acid and the other erosiveliquid. Valve