Difference between Gate Valve and Globe Valve
Speaking of valves, I believe everyone is familiar with them. They can be seen on water pipes, mainly for controlling water flow. There are many types of valves on the market, what are the differences between gate valves and globe valves? What are the advantages and disadvantages of gate valves? Let's take a look at the relevant knowledge.
I. Difference between Gate Valve and Globe Valve
Gate valve belongs to the handwheel rotation with the valve stem moving upwards, while globe valve is of the rising valve stem type. The handwheel and the valve stem rotate and move upwards at the same time. Gate valves are more complex than globe valves in structure, larger in height and shorter in appearance than globe valves. Gate valve has high sealing performance, and the spool contacts the seating surface of the base so as to be tight and leak-tight. When the operating pressure loss of the gate valve is minimum, the fluid flow resistance of the gate valve is smaller than that of the stop valve. Globe valves are installed with lower access and upper access. The gate valves have the same flow-in effect.
II. Introduction to the Advantages and Disadvantages of Gate Valves
1. The resistance of gate valve flow is relatively small, the internal part of valve body is straight, the medium is straight, and the resistance is relatively small. Gate valves are relatively labor-saving when they are opened and compared with globe valves, where the direction of motion and media flow are perpendicular, whether open or closed.
2. The gate valve has a higher height and a longer opening and closing time, mainly through the screw. Medium can flow in both directions, which makes it easier to install and has a relatively small structure length. Simple shape, compact structure, short structure length, small flow resistance, good manufacturing technology, wide application range, long service life, convenient and flexible operation.
3. It is easy to erode and scratch between the sealing surfaces of the gate valve after a long time, and the maintenance is difficult. The size is relatively large, the opening and closing time is longer, and the structure is relatively complicated.
Conclusion of the article: The knowledge about the differences, advantages and disadvantages between gate valve and globe valve is introduced here, hoping to be helpful to you.
