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