languages
English
русскийThe operating temperature of the ball valve is limited by the material of the seat sealing ring, because the ball valve usually uses rubber, nylon and PTFE as the material of the seat sealing ring. The following copper valve manufacturers will explain the relevant knowledge to you.
The cut-off function of the ball valve is accomplished by pressing the metal ball against the plastic valve seat under the action of the medium (floating ball valve). Under the action of a certain contact pressure, the valve seat sealing ring will undergo elastic-plastic changes in local areas. This change can compensate for the precision and surface roughness of the ball manufacturing, thereby ensuring the sealing performance of the ball valve.
Because the valve seat sealing ring of the ball valve is usually made of plastic, when choosing the structure and performance of the ball valve, the fire resistance and fire protection of the ball valve should be considered first, especially in the petroleum, chemical, metallurgical and other departments, in explosive media, flammable Ball valves are used in the equipment and piping systems, so more attention should be paid to fire resistance and fire protection.
