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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.
Classification of soft seal butterfly valves2023-02-03
The soft sealing butterfly valve refers to the metal material on both sides of the sealing pair and the elastic non-metallic material on the other sid…
Characteristics and applicable media of soft seal butterfly valve2023-02-03
As a component used to cut off the pipeline system and control the flow, the soft seal butterfly valve has been widely used in many fields, such as pe…
Structure and working principle of hydraulic drive device of hard seal butterfly valve2023-02-03
The valve hydraulic device is installed on the valve driving shaft. The drive spline is fixed on the valve driving shaft with a key, and the crank (wi…
Difference between soft seal butterfly valve and hard seal butterfly valve2023-02-03
The hard sealing butterfly valve with metal materials on both sides of the sealing pair and elastic non-metallic materials on the other side is called…
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