Utmost Flow Control Technology Co., Ltd.
Utmost Flow Control Technology Co., Ltd.

Introduction to Function, Material, and Size of the Globe Valve

Function of globe valve

Valves play an important role in cutting off and regulating the medium in the pipeline. As an extremely important type of shut-off valve, the sealing of the globe valve is achieved by applying torque to the valve stem, which exerts pressure on the valve disc in the axial direction, causing the sealing surface of the valve disc to tightly fit with the sealing surface of the valve seat, preventing leakage of the medium through the gap between the sealing surfaces.

The sealing pair of the globe valve is composed of the sealing surfaces of the valve disc and the valve seat. The valve stem drives the valve disc to move vertically along the center line of the valve seat. The opening and closing height of the globe valve is relatively small, making it easy to adjust the flow rate. The valve is easy to manufacture and maintain, and has a wide pressure range of application.

Compared with another commonly used type of shut-off valve in industrial production - gate valve, the globe valve is structurally simpler, easier to manufacture and maintain. The sealing surface of the globe valve is less susceptible to wear and scratches. There is no relative sliding between the valve disc and the sealing surface of the valve seat during the opening and closing process, therefore the wear and scratches on the sealing surface are smaller, which improves the service life of the sealing pair. The travel of the valve disc in the fully open and fully closed process of the globe valve manufacturer is small, and its height is relatively smaller than that of the gate valve.

Materials of globe valve

Stainless steel globe valve

Stainless steel globe valves have a wide range of applicable pressure and temperature, but they are generally used in medium and small-sized pipelines. Compared with gate valves, the structure of globe valves is simpler, and manufacturing and maintenance are more convenient. The sealing surface is less susceptible to wear and scratches, has good sealing performance, a long service life, a small valve disc travel during opening and closing, a short opening and closing time, and a smaller valve height. It is widely used in water supply and drainage, gas, electric power, metallurgy, petroleum, chemical, light textile, urban construction and other industries as a shut-off valve for steam, water, and oil pipelines.

Plastic globe valve

Plastic globe valves have a wide range of applicable temperatures from 40℃ to 95℃, and have high strength and toughness, excellent chemical corrosion resistance, self-extinguishing flame retardancy, low thermal conductivity, and are safe and convenient to use. They can be pasted, threaded, flanged, or welded. The body of the plastic globe valve is light in weight, strong in corrosion resistance, compact and beautiful in appearance, easy to install, and has a wide range of applications. The material is hygienic and non-toxic, wear-resistant, easy to disassemble, and simple to maintain. It is suitable for fluids such as water, air, oil, and corrosive chemicals.

Brass globe valve

Brass globe valve, also called shut-off valve, is a widely used type of valve, which is not only suitable for medium and low pressure, but also for high pressure. The length of the brass globe valve is greater than that of the gate valve, and the fluid resistance is large. When it operates for a long time, the sealing reliability is generally moderate. The brass globe valve adopts a design with bellows sealing, which completely eliminates the disadvantages of valve stem packing seals that are prone to aging and leakage. It not only improves the energy efficiency, enhances the safety of production equipment, reduces maintenance costs and frequent maintenance, but also provides a clean and safe working environment.

Size chart of globe valve

The size specification chart of the globe valve is based on the conversion of inches, and the outer structure of different types of globe valves is different, and their sizes are also different. It mainly includes length, width, height, screw hole distance, etc.


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