Worm butterfly valve

Worm butterfly valveAdopting a three eccentric multi-level metal hard sealing structure, it is widely used in industrial pipelines such as metallurgy, power, petrochemicals, water supply and drainage, and municipal construction with medium temperature ≤ 425 ℃, for regulating flow and carrying fluids. The valve adopts a three eccentric structure, and the valve seat and disc sealing surface are made of different hardness and stainless steel, which has good corrosion resistance and long service life. “triple eccentric”It refers to the deviation of the eccentric shaft from the centerline of the sealing surface, the deviation of the eccentric shaft from the centerline of the pipeline and valve, and the angle between the special eccentric valve seat oblique cone angle and the pipeline center, which causes the valve seat and sealing ring to detach during the entire opening and closing process of the door. This structure utilizes both the cam effect and eliminates friction, eliminating the possibility of wear and leakage.

Advantages of worm butterfly valve

1. Excellent sealing performance:

Due to the eccentric position of the valve stem of the three eccentric butterfly valve, an additional lateral thrust is generated at the contact between the valve stem and the valve disc, effectively improving the sealing performance. Meanwhile, the valve disc material usually adopts a composite structure of metal and polytetrafluoroethylene, which can provide better corrosion resistance and wear resistance, ensuring good sealing effect.

2. Low friction resistance:

The eccentric design results in only a small contact area at the contact point between the valve disc and the valve seat, thereby reducing the frictional resistance during valve disc opening and closing and decreasing the operating force.

3. Enhance high temperature resistance:

The three eccentric butterfly valve adopts a metal valve disc, which can withstand high temperature and high pressure working environments and is suitable for controlling high-temperature fluid media.

4. Quick opening and closing:

The three eccentric butterfly valve has a simple structure, small volume, fast opening and closing speed, and can achieve rapid control.

5. Strong corrosion resistance:

The three eccentric butterfly valve is made of metal material and can adapt to the control requirements of corrosive media.

6、 安全性高：

The design of the three eccentric butterfly valve adopts a dual safety structure, such as installing independent thrust rings on the upper and lower sides of the butterfly plate to prevent deformation of the butterfly plate and misalignment of the valve stem, which increases the safety of use.