Ball valve uses a ball with a circular channel to open and close as the ball rotates with the valve stem and around the axis perpendicular to the channel. Most of the ball valve packing is graphite. With good resilience and chemical stability, it provides effective sealing effect.
The globe valve is a forced sealing valve, consisting of a movable plug or disc element and a stationary ring seat in a generally spherical body. Its opening and closing parts (discs) along the center line of the valve seat channel up and down. The force to close the valve is greater than the force to open the valve. Therefore, the diameter of the valve stem should be large, in case the valve stem top bends.
Ball Valves vs. Globe Valves
The ball valve is round, which controls the valve on and off by screwing the valve.
Controlled by turning the lever, the globe valve has a lever switch which just like an ordinary faucet.
②The way of controlling the flow
The ball valve controls the flow by moving the base through the rotation of the bearing.
In order to block the flow, the globe valve rotates the lever on the valve to change the position of the diaphragm.
The sealing performance of the globe valve is better than that of the ball valve.
④Opening the valve
When the globe valve starts to open, it needs a lot of force, because its resistance will be larger.
The ball valve is easier to rotate because of its small resistance.
All in all, ball valves and globe valves have their own characteristics, please purchase them according to your own needs.
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