Double eccentric telescopic butterfly valve

Double eccentric telescopic butterfly valveIt is a butterfly valve with double eccentric design and telescopic function, which combines the characteristics of double eccentric butterfly valve and telescopic valve.

Definition and working principle

The center of the valve shaft of the double eccentric telescopic butterfly valve has been offset twice, both from the center of the butterfly plate and from the center of the valve body channel. This structural design makes the butterfly plate quickly separated from the valve seat when the valve is opened, which greatly reduces the scratching phenomenon between the butterfly plate and the valve seat, reduces the opening resistance, reduces the wear, and improves the service life of the valve seat.1. The telescopic function allows the valve to move axially within a certain range to adapt to different locations and installation requirements of the pipeline.

Structural features

The double eccentric telescopic butterfly valve usually uses stainless steel and silicon oil-resistant rubber as the sealing material, which has the characteristics of high pressure resistance and long life. Its excellent sealing performance can control the leakage rate within the range of relevant standards and achieve a near-zero leakage working state. In addition, the valve design is simple and clear, compact structure, easy to install and repair, labor-saving and convenient operation.

Application Scenarios

Double eccentric telescopic butterfly valve is widely used in municipal engineering water supply and drainage pipe network system, industrial field of metallurgical circulating water device, building fire control system of fluid control and hydropower engineering pressure pipe regulation. Its compact installation space is particularly suitable for space-constrained pipeline environments. In addition, the valve is also suitable for water plants, power plants, steel smelting, chemical and other systems for drainage, especially for water pipelines as a regulation and closure equipment.