The Difference Between Gate Valves and Globe Valves @Sedelon®

The Difference Between Gate Valves and Globe Valves @ Sedelon?

In the process of regulating the flow，the valves play an important role.

With the rapid development of the valve's usage, the types of valves are becoming diverse.

Gate valves and globe valves are two typical valve types among them.

So what are the differences between these two kinds of valves?

Regarding the gate valve, when the valve opens and closes, the stem of the valve will move along with the wedge. This type is rising stem gate valve. Through the slot on the valve body and the nut on the top of the valve, the rotation movement is turned into the straight-forward movement with the help of the acme thread on the stem, thus making the operating torque to become operating thrust.

Glove Valves: The globe valves can be used to cut and throttle the fluid. As a kind of typical cut-off valve, the sealing performance can be accomplished by exerting torque on the valve stem which will make pressure on the disc in axial direction, then the sealing face and the seat face will touch tightly to avoid the leakage of the fluid through the sealing parts.

Advantages and disadvantages

Regarding the gate valves, flow resistance is smaller, because channel in the eternal body is direct and straight. Different from the globe valves, the movement of the wedge in the gate valve is axis to the flow of fluid when opening and closing. But the disadvantage is that the sealing face will easily have erosion and abrasion so the maintenance will be difficult. The size is big, thus the opening of it needs more space and time.

Globe valves: the structure is simpler, the maintenance and repair are easier. The sealing face is not easily eroded. The sealing performance is good!

The maintenance procedures:

The maintenance of the gate valve is not suitable to operate in the pipeline site. Under this circumstance, the valves and pipes which are welded together is prior to use globe valves. The operators don't need to dismount the globe valves from the pipes.

The characteristics of the gate valves and globe valves are quite clear according to the analysis of the advantages, structures and maintenance procedures. With the development of the economy and industry, choosing the suitable type of valves are very significant.