Features, advantages and disadvantages of hard seal butterfly valve

Features of hard seal butterfly valve

1) The unique design of three-way eccentric makes no friction transmission between the sealing faces, which extends the service life of the valve.

2) Elastic seals are produced by torque.

3) The ingenious wedge design makes the valve have the automatic sealing function of closing more and more tightly, and the sealing surfaces have compensation and zero leakage.

4) Small size, light weight, light operation and easy installation.

5) Pneumatic and electric devices can be configured according to user requirements to meet the needs of remote control and program control.

6) The material of replacement parts can be applied to all kinds of media and can be lined for corrosion protection.

7) Diversified continuous structure: wafer, flange, butt welding. Customers can choose whether the butterfly valve is soft seal or hard seal according to the economic conditions and the medium used and the site environment.

Advantages of hard seal butterfly valve

The valve core and valve seat can be made in many combinations. The application of surface spraying technology makes the valve have good application in wear-resistant, high-temperature and corrosion-resistant conditions, and long service life.

Disadvantages of hard seal butterfly valve

The manufacturing cost is high, and the maintenance and replacement of valve core and valve seat usually require overall grinding, which is inconvenient for on-site maintenance. The valve torque is also relatively large.