Globe Valve

• General Info

  A globe valve is specifically designed to manage the flow within a pipeline. It has a disc or plug that moves at a right angle to the seat located inside the valve body. This design allows for precise flow regulation, making globe valves especially useful in situations that require frequent adjustments and control over the flow.
  
  Key Components
  Body: The outer casing of the valve, usually made from durable materials like stainless steel, cast iron, or bronze.
  Disc or Plug: The main component that moves vertically within the valve body to control the flow.
  Seat: The surface where the disc or plug seals, located inside the valve.
  Stem: The part that connects the disc to the actuator or handwheel, enabling control over the disc's position.
  Bonnet: The upper cover of the valve body, through which the stem operates.
  
  How It Works
  In a globe valve, the disc or plug moves vertically (perpendicular to the flow direction), allowing fluid to pass when the valve is open and blocking or restricting flow when closed. The disc can be adjusted to various heights within the valve body, providing precise flow control that is ideal for throttling applications.
  
  Types of Globe Valves
  Z-Pattern Globe Valve: Commonly used for throttling, it features a Z-shaped passage within the valve body.
  Angle Globe Valve: Designed with a 90-degree turn in the flow path, making it suitable for applications with varying flow.
  Y-Pattern Globe Valve: This type has a Y-shaped design that helps reduce pressure drop, often used in high-pressure systems.

• Specification

  Common Globe Valve Sizes
  Small Sizes: Typically range from ½ inch to 2 inches (15 mm to 50 mm). These sizes are often used in applications that require precise control, such as laboratory setups and small-scale piping systems.
  Medium Sizes: Covering from 2 inches to 8 inches (50 mm to 200 mm), these sizes are standard in industrial and commercial environments, including oil and gas pipelines and power plants.
  Large Sizes: Generally extend from 8 inches to 24 inches (200 mm to 600 mm) or even larger. These are used for high-flow applications like water treatment plants, large HVAC systems, and chemical processing facilities.
  
  Industry-Specific Sizing
  Power Generation: Typically requires medium-to-large sizes, often ranging from 2 inches to 12 inches, due to the demands of high-pressure steam and cooling water applications.
  Oil and Gas: Sizes can vary from small (1 inch) to large (24 inches or more), depending on the specific section of the pipeline and the required flow control.
  Water Treatment and Distribution: Commonly use sizes from 4 inches to 24 inches, especially for throttling applications in large pipelines.
  Chemical Processing: Sizes range from small to large (½ inch to 12 inches), based on the precision and flow rates needed.