What is the difference between a gate valve and a globe valve?

Do you know the difference between gate valves and globe valves? Below, we'll explore the distinctions.

A gate valve features a gate-shaped closure element whose movement is perpendicular to the fluid flow direction. It can only be fully open or fully closed. A globe valve, also known as a stop valve, is a forced-seal type. When closed, pressure must be applied to the valve disc to prevent leakage at the sealing surfaces.

The distinctions between the two are as follows:

1. Different Structures

The globe valve operates via a handwheel rotating with the stem to open or close, whereas the gate valve's handwheel rotation causes the stem to move vertically.

2. Different Requirements

Gate valves must be fully open or fully closed, whereas globe valves do not have this requirement.

3. Different Flow Direction Requirements

Globe valves have flow requirements, whereas gate valves have no inlet/outlet requirements.

4. Different Tightness

The sealing surface of a gate valve is a small trapezoidal edge. Once the valve disc disengages, it effectively closes the valve. Gate valves seal via the gate disc's sprue side, so their sealing performance is inferior to globe valves. When the valve station closes, the valve disc does not disengage like in a globe valve.