If you are looking for information on the Difference between Gate Valves and Globe Valves, you’ve come to the right place. Both types of valves perform the same function – controlling flow – but they have very different designs. If you’re looking for a valve to regulate a large flow of liquid, you might want to choose the former.
A common difference between a globe valve and a gate valve is the configuration. The former has a single, fixed valve stem and is typically used for larger applications where regular maintenance is required.
A globe valve, on the other hand, is typically designed for frequent maintenance because the disc and seat can be replaced fairly easily. The main difference between a gate valve and a globe valve is the design. A gate valve has an on/off feature. A globe valve is intended to regulate flow and is used when there is a need to isolate the media.
If you want to know more about the difference between a gate valve and a globe valve, continue reading this article.
What is a Gate Valve?
Gate valves are used to control flow in narrow spaces, and they are often more efficient than a plug-type valve in high-pressure service. Their slow-responding design makes them an excellent choice for applications where there’s limited space or where pressure changes often cause damage to the stem.
A gate valve is a better choice in high-pressure service than a plug-type valve because it is much cheaper. Despite this, gate valves are not suited for high-temperature service, and they are not suitable for marine atmospheres.
A gate valve consists of seven main parts, including a bonnet, a handwheel, a stem, a gasket, and a gate. The parts of a gate valve may have varying designs depending on the application. But their main function remains the same: controlling flow.
What is Globe Valve?
If you’re looking for a valve that allows fluids to flow between two positions, a globe valve is an ideal choice. These valves come in two main types: bellow sealing and packing sealing. Each type of valve has certain benefits and drawbacks.
Generally, the most common feature of a globe valve is its large opening for the valve disc assembly. The globe design allows the valve to cantilever the disk onto the valve stem, making it heavier than other valves of the same size and flow capacity. The advantage of a globe valve is its simplicity. Globe valves require less maintenance and can be operated manually.
Another type of globe valve has a stem that moves up to control flow. A disc containing a ball, composition, or plug sits on the stem. The stem is usually screwed into the body of the valve, with a seat in the opposite direction. A seat is installed on the valve in a plane parallel to the flow, which helps with a quick shutoff.
Difference between Gate Valve and Globe Valve
When choosing a valve, you should consider how complex the construction is. Gate valves, on the other hand, have a simple design with many internal components located on top of the valve body. Gate valves may have a rising stem or a non-rising stem. The main difference between these two valves is the way they control fluid flow. While both types of valves can control flow, the main difference between them is the overall pressure drop and the amount of resistance they offer.
Regardless of their structural differences, gate valves are an excellent choice for tight sealing applications. Gate valves use a patented curved body with a perpendicular movement. They also consume less power than globe valves. Their energy efficiency lowers the total cost of ownership. Because they are relatively simple, gate valves are easy to operate compared to other designs. They are also less complicated than globe valves, which makes them an excellent choice for applications where high pressure is not a primary concern.
The key difference between a gate valve and a globe valve is the way that it closes and opens. A gate valve closes when fully opened, while a globe valve remains open for a limited period. While a gate valve is easy to identify when fully open, it’s hard to close. Flow resistance in the valve body path is almost zero. Hence, a gate valve requires less labor and time to operate.
While both globe valves and gate valves are useful for on-off and shutoff control in the oil and gas industry, they have different functions. A globe valve, for instance, is used to control flow within a pipe, while a gate valve can change flow direction and rate without a change in pressure. Therefore, a gate valve is generally a better choice for on-off control in applications where flow is not a primary concern.
