PipingNotes

Design-Engineering-Construction-Testing & Commissioning of piping

Types of Ball Valves

Ball valves are quarter-turn valves that use a hollow, perforated, and pivoting ball to control fluid flow . They are known for providing tight shutoff, durability, and ease of operation . Here are the main types of ball valves and their uses:

  • Standard Ball Valves: These are general-purpose valves suitable for a wide range of applications, including on/off control in various industries .
  • Full Port Ball Valves: The bore size is the same as the pipe’s inner diameter, offering unrestricted flow and minimal pressure drop . They are used when free, unobstructed flow is essential .
  • Reduced Port Ball Valves: The bore size is smaller than the pipe’s inner diameter, resulting in a slight pressure drop . They are more economical than full port valves and suitable for applications where some flow restriction is acceptable .
  • V-Port Ball Valves: The ball has a V-shaped notch, providing precise flow control . They are used for throttling applications requiring accurate adjustments .
  • Multi-Port Ball Valves: These valves have three or more ports, allowing for diverting or mixing fluids from different sources . They are used in complex piping systems where flow direction needs to be changed .
  • Flanged Ball Valves: These valves have flanged ends for easy installation and removal from piping systems . They are used in applications where valves need to be frequently inspected or replaced .
  • Threaded Ball Valves: These valves have threaded ends (NPT or BSP) for connecting to threaded pipes . They are used in smaller piping systems and low-pressure applications .
  • Welded Ball Valves: These valves are welded into the pipeline, providing a leak-proof connection . They are used in high-pressure and high-temperature applications where reliability is critical .
  • Hydraulic Ball Valves: Designed for high-pressure hydraulic systems . They are used in heavy machinery, construction equipment, and other hydraulic applications .
  • Brass Ball Valves: Commonly used in plumbing and low-pressure applications . They are suitable for potable water and other non-corrosive fluids .
  • PVC Ball Valves: Used for corrosive fluids and chemical applications . They are resistant to many chemicals and acids .
  • Stainless Steel Ball Valves: Offer excellent corrosion resistance and are suitable for a wide range of applications, including chemical, food, and pharmaceutical industries .

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