What is the Differences Among Ball Valve, Globe Valve and Gate Valve?

Aug. 18, 2021

Valves are used to control the flow of liquids and gases. Ball valves,  globe valves and gate valves are used to control the flow of liquids. These various types of valves are used to create waterways, so it is important to understand these differences and their uses. As a valves supplier, I'd like to introduce them to you.




Introduction to Ball Valve

Flange Motorized V Type Ball Valve

Flange Motorized V Type Ball Valve

The ball valve made of solid components has high durability and can function perfectly even after being idle for a long time. It has a sphere made of brass, stainless steel or chrome-plated brass embedded in the catheter. The top of the sphere is a lever, which can only be shaken a quarter of a turn. When the horizontal plane is parallel to the pipe, the sphere allows water to flow. When the lever is perpendicular to the pipe, the solid ball stops the water flow. The water flow is controlled by moving the joystick from the angle of the pipe connected to it from 0 degrees to 90 degrees.

On the other hand, you can make the water partially flow through the pipe by keeping the lever between the 2 limits, but the pipe may be deformed due to the water pressure. The advantage of this valve is that you can open or close it easily and quickly. However, the water will continue to hammer the sphere and the sides of the pipe unless it is fully opened to guide the water.




Introduction to Globe Valves

Rising Stem Globe Valve

Rising Stem Globe Valve

The stop valve is a wheel-based valve. When opened, the valve reduces the water flow through the pipeline through a set of fixed ring seats fixed in the spherical body. The shut-off valve contains a spherical area divided into two halves by the opening forming the valve seat. On the valve seat, you can use a runner that can control the water flow or completely stop the water flow to tighten the plug.

It is difficult to understand whether the shut-off valve is open or closed, especially when it is partially open. In addition, it cannot be operated with one hand like a ball valve.




Introduction to Gate Valve

Resilient Seat Gate Valve

Resilient Seat Gate Valve


The gate valve is used to control the flow of liquid, and is usually operated by turning the wheel and moving the gate valve up and down. When turning the wheel to lower the sluice, the water wheel reaches its lowest position, which stops the flow of water. When the wheels are operated in the opposite operation, the gate is at the highest position, and water can flow unimpeded.

By looking at the rising stem that is part of the gate valve, it is easy to know where the gate valve is. If the valve stem rises and is visible, it means that the gate valve is open; when the valve stem is not visible, it means that the gate valve is closed.

The gate valve stays in contact with the flowing water, so it is extremely susceptible to corrosion, subsequent failure, and eventually rupture. Because of its slow operation, the chance of water hammer is negligible. It should be used in open or closed conditions. If it is kept improperly, it may be damaged due to water pressure and vibration.

Tianjin KXC group founded in 2004, is an ISO 9001 certified company,committed to manufacturing valves, valve parts & related products for water works and water treatment projects. Our company has different types of valves in high quality for sale, welcome to consult!


 



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