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Gate valve durable or ball valve durable

2022-03-03 11:15:59

Once a customer asked the editor, whether the gate valve is durable or the ball valve is durable. Before answering this question, we need to figure out a reason. It is meaningless to compare the specified situation of departure without the given situation. Gate valve and ball valve are completely two different valves, their working conditions and environment also have very big difference, so it is not appropriate to simply compare the gate valve and the ball valve which is more durable. Pango Valves editor will analyze the advantages and disadvantages of gate valve and ball valve for you, and you can make a comparison.

Advantages of gate valves


1. When the gate valve is fully opened, the medium channel inside the valve body is straight, and the flow resistance is small.

2. When opening and closing, the movement direction of the disc of the gate valve is perpendicular to the flow direction of the medium, and it will be more labor-saving to operate the opening and closing.

3. The disc of gate valve has a large stroke, and the opening and closing time is long, and it is not easy to produce water hammer.

4. The medium can flow in any direction on both sides of the gate valve body channel, and there is no direction limit for installation, which is more convenient for installation.

Disadvantages of gate valves

1. It is easy to cause erosion and scratches between the sealing surfaces, and it is difficult to maintain.

2. The overall size is large, and a certain space is required to open.

3. The gate travel is large, and the valve takes a long time to open and close.

4. It can only be fully opened and fully closed, and the flow cannot be adjusted.

Advantages of ball valves


1. The thrust bearing reduces the friction torque of the valve stem, and the valve stem can operate smoothly and flexibly for a long time.

2. A spring is set between the ball, the valve stem and the valve body, which can export the static electricity generated during the switching process.

3. The valve body channel of the ball valve is also straight, and the fluid resistance is small.

4. The valve stem of the ball valve rotates instead of lifting, so that the packing seal of the valve stem is not easy to be damaged, so the sealing performance of the ball valve is better.

5. The material of the valve seat sealing ring of the ball valve is polytetrafluoroethylene, which has the characteristics of small friction coefficient, stable performance, not easy to age, and wide temperature range.

Disadvantages of Ball Valves

The valve seat sealing ring material PTFE has a low temperature resistance grade and can only be used under the condition of less than 180 ℃.

The above is the introduction of the advantages and disadvantages of gate valve and ball valve. Which of the two valves is more durable depends on your working conditions. If you are not sure, you can click the website online customer service, and Pango Valve will help you to make a reasonable selection according to your working conditions. 

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