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What are the advantages of gate valve

Posted by Bundor valve
In this article, we will introduce the advantages of gate valves.
 
Gate valve is a gate with disc, and the movement direction of the gate disc is perpendicular to the direction of the fluid. Gate valve can only be fully opened and fully closed, and cannot be adjusted and throttled. The gate valve is sealed by the contact between the valve seat and the gate disc. Usually, the sealing surface will be welded with metal materials to increase wear resistance, such as 1Cr13, stl6, stainless steel, etc. The gate has rigid gate disc and flexible gate disc. According to the different gates, the gate valve is divided into rigid gate valve and flexible gate valve.
 
Gate valve is a kind of valve with a large consultation volume every day. It is commonly used in water supply system. The advantages of gate valve are as follows:
 
1. The flow resistance is small. The medium channel inside the valve body is straight, and the medium flows in a straight line. When the gate is fully opened, the internal resistance of the valve body channel is almost zero, and the flow resistance is very small.
 
2. It is labor-saving to open and close. Whether the gate valve is opened or closed, the movement direction of the gate is perpendicular to the flow direction of the medium, and the resistance of the gate for lifting movement is also small, so it is very labor-saving to open and close.
 
3. Full open and full close of gate valve need a long stroke, and the closing time is relatively long, which also makes the water hammer phenomenon not easy to occur.
 
4. Both sides of the gate valve channel are symmetrical, and the installation is not restricted by the flow direction of the medium, which is convenient for installation.
 
5. The utility model has the advantages of simple shape, short structure length, good manufacturing technology and wide application range.
 
Wide range of applications. The gate valve has many materials, such as gray cast iron, nodular cast iron, cast steel, stainless steel, forged steel and so on. Different materials can be used in different working conditions and environments and have a wide range of applications.
 
 
 
 
Precautions for installation and use of gate valve
 
1. Hand wheel, handle and transmission mechanism are not allowed to be used for lifting, and collision is strictly prohibited.
 
2. The double gate valve should be installed vertically (that is, the valve stem is in the vertical position and the hand wheel is at the top).
 
3. The gate valve with bypass valve should open the bypass valve before opening (to balance the pressure difference between the inlet and outlet and reduce the opening force).
 
4. The gate valve with transmission mechanism should be installed according to the provisions of the product operation manual.
 
5.  If the valve is frequently opened and closed, lubricate it at least once a month.
 
6. The gate valve is only used for full-open, full-closed series or media operation on the equipment, and is not allowed to be used for throttling.
 
7. For gate valve with hand wheel or handle, no additional auxiliary bar would be added during operation (if the seal is not tight, the sealing surface or other parts should be checked and repaired). Turn the hand wheel and handle clockwise to close, otherwise it will open. The gate valve with transmission mechanism should be used in accordance with the product instruction manual.
 
The advantages of gate valves are introduced to you so much. If you want to know more about gate valves, you can continue to follow to Bundor valves.