The emergence of the triple eccentric butterfly valve, or triple offset butterfly valve, has changed the stereotype of the butterfly valve. In the past, people usually thought that butterfly valves could only be used on ordinary pipelines at normal temperature and low pressure, and were not resistant to high temperature or high pressure.

Buttriple eccentric butterfly valves have drastically changed the sealing structure of butterfly valves, completely solved the worries that butterfly valves are not resistant to high temperature and high pressure. Dervos introduces you to the possibilities of the triple eccentric butterfly valve.

What’s Tripe Eccentric

As anew outcome of new technology, the triple eccentric butterfly valve will be increasingly valued by users and designers.So calledthe third offset, two are placed in a similar position to the double offset butterfly valve, while the third offset is the geometry of the seating surface, creating a type of cone shape of the disc and seat. This cone angle, along with the two eccentric shaft offsets, allows the disc to seal against the seat with no friction.

Three eccentric butterfly valve fundamentally changed the sealing structure, no longer position-seal, but torque-seal, that is, not rely on the elastic deformation ofthe seat, but completely rely on the seat of the contact surface pressure to achieve sealing effect. Therefore, the problem of zero leakage of metal seats is solved in one stroke; and because the contact surface pressure is proportional to the medium pressure, the impotence to high pressure and high temperature is also solved.

Where can you find Triple Eccentric Butterfly Valves

The three eccentric butterfly valve is suitable for many places. It has awide range ofchoices inmaterials, hence, it are capable to handlehigh and low temperatures and a variety of acids, alkalis and other corrosive media. Especially in large diameter, with itsadvantage ofzero leakage, it is replacing bulky gate valves and ball valveswhen it comes to shut-off valves; likewise, with its regulating function advantage, it is replacing bulky globe valves in regulating valves.

At present, the triple eccentric butterfly valve has been widely used in a variety of important pipelines, including oil and gas extraction, offshore platforms, oil refining, petrochemical, inorganic chemical, energy generation and other major industrial fields of process control.

Xiamen Dervos is an API Certified butterfly valve manufacturing and trading company that specializes in the production of various kinds of valve. In addition to ball valve, we also produce other industrial pipeline valves, such as gate valves, globe valves, plug valves andcheck valve. To learn more about our industry-leading products, contact us today!