... Seal : SizeDN40 - DN1400Design StandardAPI 609End flangeEN1092 ,ANSI 125/150# ,DIN2501Face to faceEN 558-1, BS5155 , ISO 5752Top flangeISO 5211 BodyDuctile iron ... with the materials of ductile iron, carbon steel, stainless steel to order. Our products are designed and manufactured in accordance with the ... of GB, ASME, ANSI, API, BS, DIN, JIS etc. Various size Butterfly Valve of Rubber Seal