Manual PTFE All-Lined Butterfly Valve has a nominal diameter in the range of DN32-DN300. It is used in applications like water, sewage and so on. The application temperature variation is -10℃-+120℃. The face to face dimension is GB/T 12221 J1 Series. The valve confers to ISO 5752 Series 20, BS 5155 and DIN 3202. The top flange follows ISO 5211 specifications. The valve body is made of ductile iron and stainless steel. The stem is of stainless steel; seat made of PTFE. Leakage prevention ensured through Rate A EN12266-2.