... -200,1",1.5", 2", 2.5", 3", 4", 6" 2)Standard: DIN,SMS,ISO,3A 3)Material: stai Stainless Steel Pneumatic Butterfly Valve 1 ... )Specification: DN15-200,1",1.5", 2", 2.5", 3", 4", 6 ... " .2)Standard: DIN,SMS,ISO,3A.3)Material: stainless steel ...