What is the difference between globe valve and gate valve?

Globe valves, gate valves, butterfly valves, check valves and ball valves, etc. These valves are now indispensable control components in various piping systems. Each kind of valve is different in appearance, structure and even functional purpose. However, the stop valve and the gate valve have some similarities in appearance, and both have the function of cutting off in the pipeline. Therefore, many friends are not familiar with the valve will confuse about them. In fact, if you observe carefully, the difference between the globe valve and the gate valve is quite big. Here is the difference between globe valve and gate valve:

1. The working principle of globe valve and gate valve is different
When the shut-off valve is opened and closed, the valve stem rises. Turn the handwheel, and the handwheel will rotate and lift with the valve stem; while the gate valve, when rotates the handwheel to make the valve stem move up and down, the handwheel won’t move.
The gate valve has only two states: fully open or fully closed. The opening and closing stroke of the gate is large, and the opening and closing time is long; the movement stroke of the wedge of the stop valve is much smaller, and the wedge of the stop valve can stop at a certain position during movement, for that it to be used for flow adjustment, while the gate valve can only be used for cut-off and has no other functions.

2. The performance difference between globe valve and gate valve
The shut-off valve can be used for cut-off and flow adjustment. The fluid resistance of the globe valve is relatively large, and it is more laborious to open and close, but because the distance between the wedge and the sealing surface is short, so the opening and closing stroke is short.
The gate valve can only be fully opened and fully closed. When it is fully opened, the medium flow resistance in the valve body channel is almost zero, so the opening and closing of the gate valve will be very labor-saving, but the wedge is far away from the sealing surface so the opening and closing time is long.

3. The installation flow direction difference between globe valve and gate valve
The effect of the gate valve in both directions is the same. There is no requirement for the inlet and outlet directions for installation, and the medium can flow in both directions.
But the globe valve needs to be installed in strict accordance with the direction of the arrow mark on the valve body.

4. The structure difference between globe valve and gate valve
The structure of the gate valve will be more complicated than the globe valve. From the appearance, the gate valve is taller than the globe valve and the globe valve is longer than the gate valve for the same size. In addition, the gate valve have the design of rising stem and non-rising stem, but the globe valve don’t have that kind of difference.


Post time: Jul-12-2021