Wuxi Dongao Nonferrous Casting Co., Ltd.
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Service life of the gate valve cross section
- Jul 30, 2018 -

The shut-off valve body plays an important role in cutting and throttling the medium in the pipeline in which it is operated. In operation, its shut-off valve acts as an extremely important type of shut-off valve, and its seal is applied to the valve stem. Torque, the valve stem applies pressure to the valve flap in the axial direction so that the valve sealing surface fits snugly against the valve seat sealing surface, preventing the medium from leaking along the gap between the sealing surfaces.

The sealing pair of the valve body consists of a valve sealing surface and a valve seat sealing surface. When operating, the valve stem drives the valve flap to move vertically along the center line of the valve seat. During the opening and closing process of the shut-off valve, the opening height is small, the flow rate is easy to adjust, and the manufacturing and maintenance are convenient, and the pressure is applicable to a wide range.

The service life of the shut-off valve body is that the sealing surface of the product is not easy to wear and scratches. During the opening and closing process, the valve has no relative sliding with the valve flap and the seat sealing surface, so the sealing surface is The wear and the scratch are small, so the service life of the sealing pair is improved. The valve flap stroke is small during the full-closed process, and the height is relatively small compared to the valve.