... can product as the request of customers storm valve Valve Size: 2" -128", 150LB-600LB, PN6~PN100. Material: C. ... ,cast iron, ductile iron4) Operation: hand wheel, worm gear, electric actuator, pneumatic operatorStandards:1) Design and Manufacture: GB,DIN,API2 ... . We can make Butterfly valves,wafer butterfly valve, API butterfly valve and Lug butterfly valve .The material for cast steel, stainless steel ...