For the triple offset butterfly valves, they are designed in accordance with API 609 with features of lightweight 、bi-directional、cost-effective and low torque. The working temperature range is -196℃~ 500℃ for this series of triple offset butterfly valves, and there’re various materials to choose from. In many industries, they can be used not only for on-off but also regulating the flow , thus it’s replacing traditional Gate、Globe & Ball valves.