Full PTFE Lining Butterfly Valve 

Main materials:

Body: Cast iron, ductile iron, stainless steel, cast steel (WCB)

Disc: stainless steel, ductile iron with nylon/PTFE/PFA coated.

Seat: PFA,PTFE,PTFE bonded over EPDM

Stem:  SS316,304,410

Operated: Handle or wormgear, pneumatic, electric actuator