how to achieve the 'face' of high pressure cut-off valve seal? And most of the 'Y' cut-off Industrial Valves and closing valve, high pressure cut-off Industrial Valves adopts linear sealing form mostly, plug Angle and valve seat sealing surface differ 1 ° ~ 2 °. Although the valve at the beginning don't need a lot of compression force to ensure that the seal, but because of the valve plug and seat is a circular linear sealing, even local slight damage cannot close the valve, it is easy to cause this kind of situation, even if the valve can not exert any force to close the valve plug. 'Good valve and valve seat sealing surface structure of the same Angle, when the valve is closed, the plug and seat with annular surface contact. If the system in the tiny impurities cause local and minor damage to seal surface, as long as the damage is not along the direction of the sealing surface connection, the valve can still keep this state surface seal tightly. High pressure cut-off valve mainly rely on two seal face ( Disc seal face and seat sealing surface close to form a seal form) Contact, the valve seat sealing surface and disc sealing surface Angle and surface seal is the same, different angles ( For example, 29 °, 30 °) Is linear seal. High pressure cut-off Industrial Valves seat sealing surface may also be extended, normal stop valve sealing surface, small needle valve is linear sealing, specific need to know before dismantling.

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