PTFE lining Butterfly valves

Materials:

Upper body      Carbon steel,stainless steel

Lower body      Carbon steel,stainless steel

Disc                   Stainless steel,carbon steel core fully covered with fluorine plastic

Axis                    Stainless steel

Seat                    PTFE,PCTFE,FEP,PFA

Spring strip       Si

O ring                  Viton

Wrench               Cast iron,cast aluminium alloy