Bs5150 Hand Wheel Cast Iron Flange Gate Valve

BS5150 Hand Wheel Cast Iron Flange Gate Valve

Yantai Jinhai Precision Instrument Co., Ltd. is currently the largest online sales service provider of "gate valves" in China. The company integrates high-quality cast iron flange gate valve manufacturers and provides one-stop services before, during and after sales. The company has a large inventory of gate valves in stock all year round, providing users with valve selection, principle and function, structural dimensions, installation instructions, data downloads, etc.

The gate valve is a control component in the pipeline system that uses a hand wheel to drive the gate plate to move in the vertical direction of the channel axis to cut off the medium flow. During use, the valve must be fully open or fully closed and cannot be used to regulate flow.
When the gate valve is closed, the sealing surface can be sealed only by the medium pressure, that is, the sealing surface of the gate plate is pressed to the valve seat on the other side by the medium pressure only to ensure the sealing of the sealing surface, which is self-sealing. Most gate valves adopt forced sealing, that is, when the valve is closed, external force must be relied on to force the gate plate to the valve seat to ensure the sealing performance of the sealing surface.
The gate plate of the gate valve moves linearly with the valve stem, which is called lifting rod gate valve (also called rising rod gate valve). Usually there is a trapezoidal thread on the lift rod. Through the nut on the top of the valve and the guide groove on the valve body, the rotating motion is changed into linear motion, that is, the operating torque is changed into the operating thrust. In some valves, the valve stem nut is set on the gate plate, and the rotation of the handwheel drives the valve stem to rotate, thereby lifting the gate plate. This kind of valve is called a rotating rod gate valve or a concealed rod gate valve.

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