butterfly valve is widely used in industry pipe lines.all zises and all standards are available. as per your requirement.

Size:DN25-DN1200

Seat:PTFE,BNR,EPDM,VITON

Stem:Stainless Steel 304/316/416

Packing :Soft graphite

Hand Lever/Gear:Cast Iron or Ductile Iron

Woking pressure:PN10,PN16

Top Flange:ISO 5211

Flange drilling standard: BS4504, ANSI B16.5,JIS,DIN2501

Surface: Electric Fussion Epoxy Powder Coated