The sealing surfaces of butterfly valves can be divided into three categories, so what are the characteristics and uses of these three categories, and how do you choose as a purchasing user?

VALTECCN butterfly valve manufacturers have summarized the characteristics and main uses of these three types of sealing surfaces with years of experience.

Metal Hard Seal Butterfly Valve

Features: Using a “U”-shaped stainless steel sealing ring, the precise elastic sealing ring is in three-dimensional eccentric contact with the polished disc. It solves the disadvantage that the sealing surface of the traditional eccentric butterfly valve is still in sliding contact friction at the moment of opening and closing 0°~10°, and realizes the effect that the sealing surface of the butterfly plate is separated at the moment of opening and the sealing is closed when the contact is closed, so as to prolong the service life and achieve good sealing performance. the goal of.

Application: It is widely used in the pipelines of metallurgy, electric power, petroleum, chemical industry, air, gas, combustible gas, water supply and drainage and other corrosive media with medium temperature ≤550℃. It is a good device for regulating flow and cutting off fluid.

Rubber Soft Seat Butterfly Valve

Features:

1. Novel and reasonable design, unique structure, light weight, quick opening and closing.
2. Small operating torque, easy to operate, labor-saving and smart.
3. It can be installed in any position and easy to maintain.
4. The seals can be replaced, and the sealing performance is reliable to achieve zero leakage of bidirectional sealing.
5. The sealing material has the characteristics of aging resistance, corrosion resistance and long service life.

Application: Soft sealing butterfly valve is suitable for water supply and drainage and gas pipelines with temperature ≤120℃ and nominal pressure ≤1.6MPa for food, medicine, chemical industry, petroleum, electric power, textile, papermaking and other water supply and drainage and gas pipelines.

PTFE sealing butterfly valve

Features:

1. Novel and reasonable design, unique structure, light weight, quick opening and closing.
2. Small operating torque, easy to operate, labor-saving and smart.
3. It can be installed in any position and easy to maintain.
4. The seals can be replaced, and the sealing performance is reliable to achieve zero leakage of bidirectional sealing.
5. The sealing material has the characteristics of aging resistance, corrosion resistance and long service life.

Application: This product is composed of PTFE sealed butterfly valve, stainless steel valve plate and valve stem. It is suitable for temperature ≤250℃, weak corrosion or certain requirements for cleanliness. It is used to adjust flow and intercept medium in water supply and drainage and gas pipelines such as food, medicine, chemical industry, petroleum, electric power, textile, papermaking, etc.