What Is The Difference Between Gate Valve, Globe Valve, Ball Valve And Butterfly Valve?

   A gate valve is a valve that opens by lifting a gate from the path of the fluid.
 
A globe valve is a type of valve  used for regulating flow in a pipe, consisting of a movable disk-type element and a stationary ring seat in a spherical body. Usually the globe is moved in and out of the flow by a handle connected to a threaded stem.
 
A ball valve is a valve that opens by turning a handle attached to a ball inside the valve. The ball has a hole in the middle so that when the hole is lined up the input side and the output side of the valve, flow occurs.
 
A butterfly valve has a round plate in the center of the pipe. The plate has an axel connected to an opening lever on the outside of the valve.  Turning the lever positions the plate parallel or perpendicular to the flow and thus lets more or less fluid pass.  

Globe valves and butterfly valves are throttling valves which are controlling the pressure.

Ball valve and gate valves are fully open and fully closed valves

This is easier to show with pics vs. trying to explain go to

tpub.com/fireman/69.htm

Good luck

What is the difference between gate valve and globe valve?

Gate valves used to fully open and fully closed.. But globe valve is used for regulating pressure and flow

I agree, but I did think that a globe valve was a ball sitting loose in a sphere that will only allow liquid to travel on one direction.

Because the gate valve is oh oh that's why the ball valve is yeah yeah