What is the Difference Between Y-type and Ordinary Globe Valve?
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A globe valve is a common type of control valve widely used in various industrial fields to regulate and shut off fluid flow. Based on its internal structure and functional characteristics, a globe valve can be classified into ordinary globe valves and Y-type globe valves.
Ordinary globe valves typically have a vertical lift stem design, with a simple valve body structure. The valve disc controls the fluid flow by moving up and down along the stem. The contact surface between the valve seat and the disc is relatively large, providing good sealing performance.
Y-type globe valves have a Y-shaped internal design. This design allows the fluid to flow more smoothly when the valve is open, reducing fluid resistance. The stem is angled to the fluid passage, usually at 45 degrees, which not only minimizes the impact of the fluid on the valve internals but also reduces the operating force.
Ordinary globe valves have relatively high fluid resistance because the fluid needs to pass through a right-angle passage, causing significant pressure loss.
Y-type globe valves have lower fluid resistance. Due to their Y-type design, the fluid flows more smoothly through the valve, resulting in less pressure loss and a smoother passage for the fluid.
Ordinary globe valves perform adequately in flow regulation but are mainly used for fluid shutoff. While they can be used for flow regulation, their precision is relatively low.
Y-type globe valves, on the other hand, excel in flow regulation. Their design allows for more flexible movement of the valve disc, enabling more precise flow control. They are suitable for applications that require accurate flow adjustment.
Ordinary globe valves are widely used in applications that require frequent switching, such as water supply systems, steam pipelines, and petrochemical industries. Their simple structure and easy maintenance make them suitable for medium and low-pressure systems.
Y-type globe valves are primarily used in applications that require low fluid resistance and high flow regulation accuracy, including oil and gas transportation, chemical production, power generation, and water treatment industries.
The maintenance of an ordinary globe valve is relatively simple. Due to its linear lift design, the wear on the valve stem and seat is minimal, making it easier to repair and replace components.
Due to its unique design, the Y-type globe valve has internal components that experience more evenly distributed forces during fluid flow, reducing wear and extending the valve's service life. However, its complex structure may increase the complexity and cost of maintenance.
Y-type Globe Valve
Structure Design
Ordinary globe valves typically have a vertical lift stem design, with a simple valve body structure. The valve disc controls the fluid flow by moving up and down along the stem. The contact surface between the valve seat and the disc is relatively large, providing good sealing performance.
Y-type globe valves have a Y-shaped internal design. This design allows the fluid to flow more smoothly when the valve is open, reducing fluid resistance. The stem is angled to the fluid passage, usually at 45 degrees, which not only minimizes the impact of the fluid on the valve internals but also reduces the operating force.
Fluid Characteristics
1. Fluid Resistance
Ordinary globe valves have relatively high fluid resistance because the fluid needs to pass through a right-angle passage, causing significant pressure loss.
Y-type globe valves have lower fluid resistance. Due to their Y-type design, the fluid flows more smoothly through the valve, resulting in less pressure loss and a smoother passage for the fluid.
2. Flow Regulation
Ordinary globe valves perform adequately in flow regulation but are mainly used for fluid shutoff. While they can be used for flow regulation, their precision is relatively low.
Y-type globe valves, on the other hand, excel in flow regulation. Their design allows for more flexible movement of the valve disc, enabling more precise flow control. They are suitable for applications that require accurate flow adjustment.
Application Scenarios
Ordinary globe valves are widely used in applications that require frequent switching, such as water supply systems, steam pipelines, and petrochemical industries. Their simple structure and easy maintenance make them suitable for medium and low-pressure systems.
Y-type globe valves are primarily used in applications that require low fluid resistance and high flow regulation accuracy, including oil and gas transportation, chemical production, power generation, and water treatment industries.
Maintenance and Lifespan
The maintenance of an ordinary globe valve is relatively simple. Due to its linear lift design, the wear on the valve stem and seat is minimal, making it easier to repair and replace components.
Due to its unique design, the Y-type globe valve has internal components that experience more evenly distributed forces during fluid flow, reducing wear and extending the valve's service life. However, its complex structure may increase the complexity and cost of maintenance.
Next: Working Principle of Y-type Globe Valve
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