Jun. 09, 2025
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Definition of globe valve：
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The opening and closing member (valve new) driven by the valve stem, along the valve seat (sealing surface) axis to do linear lifting movement of the valve is called a globe valve.
Globe valve is generally driven by the drive parts (handwheel, stem, valve body, valve cover, valve flap (closure) and packing assembly, and other major components. The handwheel is connected to the valve stem, and the valve flap is driven by the valve stem, so that the valve flap moves reciprocally along the direction of the valve seat axis, thus making the pipeline connected or cut off.
The globe valve is widely used, mainly for higher pressure and smaller caliber occasions, generally only produced to DN400 (NPS 16), the larger diameter specifications only for special pipelines. For example, a large oxygen pipeline, due to the existence of other valves friction is prone to static fire, so the use of a large-diameter stainless steel globe valve.
The working principle of the globe valve：
Globe valve stem generally do rotary lifting movement, handwheel fixed in the top of the stem. When the handwheel is rotated clockwise, the stem threads rotate down, the valve sealing surface and the valve seat sealing surface in close contact, and the shut-off valve closes; when the handwheel is rotated counterclockwise, the stem threads rotate up, the valve sealing surface and the valve seat sealing surface disengage, the shut-off valve open.
The advantages and disadvantages of the globe valve:
The advantages of the globe valve:
#1 Compared with the gate valve, the globe valve structure is simpler, usually only one sealing surface on the valve body and valve flap, small sealing area, saving valuable materials, low cost, and therefore better manufacturing process, easy maintenance.
#2 The seal surface wear and abrasion are light, good sealing. No relative sliding between the valve flap and body sealing surface when opening and closing (except for the conical sealing surface), so the wear and abrasion are not serious, good sealing performance, and long service life.
#3 Opening height is small, generally only 1/4 of the diameter of the valve seat channel, compact structure, saving installation space.
#4 Precise flow control: Globe valves are particularly useful for applications that require precise control of fluid flow. They can be adjusted to provide a wide range of flow rates, making them suitable for a variety of industrial applications.
#5 High-pressure rating: Globe valves can handle high-pressure applications because of their unique design. This makes them ideal for use in piping systems where pressure is a critical factor.
#6 Good shutoff capability: Globe valves have a good shutoff capability, which is particularly useful in applications where tight shut-off is required. This helps ensure that the valve prevents the flow of fluids in both directions.
#7 Versatility: Globe valves can be used with a wide range of fluids, including gases, liquids, and slurries. This makes them useful in a variety of industries, including petrochemical, manufacturing, refining, and water treatment.
#8 Long lifespan: Globe valves are durable and can last for many years with proper maintenance, which can save money over the long term. They are also less prone to leakage, which can prevent damage to equipment or surrounding areas.
Disadvantages of globe valve:
#1 Pressure drop: Globe valves are known to create a significant pressure drop across the valve when fully open, due to their inherent design. This can reduce the efficiency of the system and require additional energy to maintain flow rates.
#2 Size and weight: Globe valves are generally larger and heavier than many other types of valves, which can make them more difficult to install and require larger support structures.
#3 Cost: Globe valves can be more expensive than some other types of valves due to their complexity and precision required for manufacturing and installation.
#4 Maintenance: Globe valves have multiple internal components that can wear or become damaged over time, requiring more frequent maintenance than simpler valve types.
#5 Limited suitability for high flow rates: Globe valves can be prone to cavitation and erosion in high-flow applications, which can limit their suitability for certain situations.
Globe valves can be classified based on different criteria. Here are some of the common classifications of globe valves:
#1. Based on design: Globe valves can be classified based on their design, such as T-pattern, Y-pattern, and angle pattern. Each design has unique characteristics, such as better flow control, reduced pressure drop, or being more suitable for high-pressure applications.
#2. Based on valve body material: Globe valves are made from different materials, including stainless steel, carbon steel, bronze, brass, and cast iron. The material used for the valve body and other components depends on the type of fluid to be handled, pressure, temperature, and durability requirements.
#3. Based on the valve stem: Globe valves can be classified based on the type of valve stem used, such as rising stem, non-rising stem, or rotary stem. The stem type determines the way the valve disk or plug is moved to regulate or shut off the flow of fluid.
#4. Based on the number of ports: Globe valves can also be classified based on the number of ports, such as single-port or double-port. Single-port globe valves have one inlet and one outlet port. Double-port, or 3-way, globe valves have three or more ports, which allow for more complex flow path configurations.
#5. Based on the operating mechanism: Globe valves can also be classified based on their operating mechanism, such as manual, electric, pneumatic, hydraulic, or solenoid-operated. The operating mechanism determines how the valve is opened or closed and is based on the application requirements.
The following application conditions are suitable for globe valves:
#1. High-pressure applications: Globe valves are suitable for high-pressure piping systems, where there is a high risk of fluid escaping.
#2. Precise flow control: Globe valves are ideal for controlling the flow rate of process fluids with high precision.
#3. High-temperature applications: Globe valves can perform well in high-temperature environments where other valve types may be prone to failure.
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#4. Corrosive or abrasive fluids: Globe valves are suitable for use with corrosive or abrasive fluids due to the availability of valve components with specific material compatibility.
#5. Liquid services: Globe valves are commonly used in liquid services, such as water treatment plants or chemical processing facilities.
#6. Process control: Globe valves are effective in controlling process conditions, such as pressure, temperature, or flow rate, where accuracy is essential.
#7. High-viscosity fluids: Globe valves can handle high-viscosity fluids, such as slurries or lubricants with a higher degree of precision.
Why should you choose globe valves over other types of valves? Because they are easier to operate and maintain, have a lower leakage rate, and are functional in a wider range of applications. Globe valves are also less likely to clog than other types of valves.
A variety of industries use globe valves, including oil and gas, chemical, power generation, and water treatment. They are also beneficial in a variety of applications, such as regulating flow, controlling pressure, and managing temperature. Read on to learn more about globe valve advantages and why you should choose them.
A globe valve is a type of valve that regulates flow by using a movable disk to open and close off an exit port. The disk connects to a stem, which a handle or lever operates. Globe valves get their name from their spherical shape.
Globe valves are useful for regulating flow, controlling pressure, and managing temperature in a variety of different applications. Not only are globe valves easier to operate and maintain than other types of valves, but they also have a lower leakage rate. This makes them functional in a wider range of applications.
A globe valve is a device whose primary function is to open and close members (valves) that are driven by stems. These valves lift along a surface called the valve seat in order to achieve linear movement.
The typical globe valve operates by using various components that work together (i.e. handwheel, stem, valve body and cover, closure, and packing assembly). The handwheel connects to the valve stem, which in turn drives the valve flap. This reciprocal motion along the direction of the valve seat axis opens or closes the pipeline when it needs to.
Globe valves are widely used and are generally produced in smaller diameters up to DN400 (NPS 16). Larger diameter specifications are only for special pipelines. For example, a large oxygen pipeline may require a large-diameter stainless steel globe valve This is due to the existence of other valves that may cause friction and lead to static fires.
There are many advantages of globe valves over other types of valves. These advantages include:
Globe valves are easy to operate because they only require a quarter turn to open or close. A Handle or a lever attached to the stem opens or closes the valve This makes them ideal for applications where quick operation is necessary, such as in emergency situations.
Operating and maintaining a globe valve is easier than other types of valves. Globe valves have a simple design and few moving parts, which makes them less likely to break down.
Globe valves have a lower leakage rate than other types of valves. This is because the disk in a globe valve seats more snugly against the port, which creates a tighter seal.
Unlike other types of valves, globe valves are adaptable and can function in a wider range of settings. This is due to the different sizes, materials, and pressure ratings that they come in.
Globe valves are less likely to clog than other types of valves. This is because the disk in a globe valve can be easily removed for cleaning.
They have a long service life of up to 20 years with proper maintenance. They can withstand high pressures and temperatures.
Their design makes them resistant to contamination and fouling. They control fluid flow in a variety of applications, such as regulating pressure, managing temperature, and controlling the level of a liquid.
They are also cost-effective and can save you money in the long run.
Globe valves are beneficial in regulating flow, controlling pressure, and managing temperature. They find use in industries such as oil and gas, chemical, power generation, and water treatment.
Some common applications of globe valves include:
Globe valves regulate flow in piping systems. They go in the line between a pump and a tank or reservoir. The valve opens to allow flow from the pump to fill the tank, and then closes when the desired level is reached.
Globe valves fit in the line between a pump and a tank or reservoir. The valve allows flow from the pump to fill the tank and then closes once it achieves the desired pressure.
Globe valves are installed in the line between a heat source and a heat exchanger. The valves’ opening and closing allow flow from the heat source to enter the exchanger which controls the temperature levels.
The oil and gas industry uses globe valves to regulate flow in pipelines. They install them in the line between a pump and a tank or reservoir. The opening and closing of the valve regulate the levels of the liquid.
In the chemical industry, globe valves function to regulate the flow of corrosive and toxic fluids. Their installation in the line between the pump and storage tank allows for precise control of dangerous chemicals.
The power generation industry uses globe valves to manage the temperature in piping systems. They are installed in the line between a heat source and a heat exchanger. The valve opens to allow heat from the source to enter the exchanger, and then it closes once the desired temperature is met.
Globe valves are used in the water treatment industry to regulate flow in pipelines. They are installed in the line between a pump and a tank or reservoir. The valve does this by opening to fill the tank and closing when it is at the desired levels.
Globe valves are often used in drip irrigation systems. They situate between the water source and emitters, where they open and close to regulate how much water flows through.
Globe valve advantages are many and varied. Their ability to withstand high temperatures and pressures, resist corrosion and contamination and regulate flow make them an ideal choice for a variety of industries. When you need precise control over liquids, globe valves should be your go-to choice.
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