What is the difference between ball valve and globe valve

Usually, one finds these with a straight handle. When the handle is parallel to the pipe, the valve is open all the way. When at a right angle to the pipe, you have turned off the flow. These valves have high durability. They last a long time because of how little motion it takes to turn it on or off. However, they have their faults as well. You cannot regulate the flow very well using a ball valve. Once they start to open, they reach peak flow fast. If you have trouble choosing, think about how much time your valve will spend closed.

If you plan to shut things off for long periods of time, choose the ball valve. If you need tight regulation of flow, the globe valve wins the day. Some applications include cooling systems, fuel oil or steam systems. A ball valve works great in high-pressure systems such as fire hoses.

These may stay turned off for long periods of time. But they need to work as well every time someone opens and closes them. Ball valves are designed with a ball inside the valve.

Globe valves were for many years the industry standard in control valves. They are named for their spherical body shape, with the two halves of the body being separated by an internal baffle. This has an opening that forms a seat onto which a movable plug or disc can be screwed in to close the valve.

Typically, automated globe valves use smooth stems rather than threaded and are opened and closed by an actuator assembly. Ball valves are durable, performing well after many cycles, and reliable, closing securely even after long periods of disuse. These qualities make them an excellent choice for shutoff applications, where they are often preferred to gates and globe valves.

On the flip side, ball valves do lack the fine control in throttling applications offered by globe valves. It has a sphere made of brass, stainless steel, or chrome plated brass, embedded inside the conduit. On the top of the sphere is a lever attached which can move in a quarter turn only. When the level lies parallel to the pipe, the sphere allows water to flow. When the lever is perpendicular to the pipes the solid sphere blocks the water flow. The water flow is controlled by moving the lever from 0 to 90 degree in terms with the pipe with whom it is attached.

On the flip side though you have the provision to make water flow partially through the pipes by keeping the lever in between 2 limits, but due to water pressure, water pipes might distort. The advantage of this kind of valves is that you can easily and quickly open or close it. However, water hammers the sphere and the sides of the pipe all the time, except when it is fully open to channelize the water.