... ,JIS,ANSI, Driving Style:Lever,gear,actuator,pneumatic Description:The grooved end butterfly valve offers an easily installed choice to cumbersome ... offer excellent flow characteristics with low torqueoperation. The size of grooved end butterfly valve we can offer is from DN50~DN300with ... ,most of our products are exported to USA,South America, Europe,and the Middle East Area.we always supply the high ...