Butterfly Valve

• General Info

  A butterfly valve is a quarter-turn valve that regulates flow by using a rotating disc, commonly known as a "butterfly." This disc is connected to a shaft and can be rotated 90 degrees to either fully open or completely close the valve. Butterfly valves are favored for their compact design, lightweight construction, and efficient shut-off capabilities, making them widely used across various industries.
  
  Key Components
  Body: The outer shell of the valve, which can be made from materials like cast iron, stainless steel, plastic, or other alloys, depending on the intended use.
  Disc: The flat or slightly curved plate that rotates to open or close the valve. When the disc is aligned with the flow direction, the valve is open; when it is turned perpendicular, the valve is closed.
  Shaft: This part connects the disc to the actuator or handle, allowing the disc to rotate and control the flow.
  Sealing Mechanism: The area where the disc meets the body, usually fitted with a seal (such as rubber or elastomer) to ensure a leak-proof shut-off when the valve is closed.

• Specification

  Needle valves, which are used to control flow in a precise manner, are available in various sizes. The most common sizes are:
  
  1/8-inch (3.18 mm)
  1/4-inch (6.35 mm)
  3/8-inch (9.53 mm)
  1/2-inch (12.7 mm)
  3/4-inch (19.05 mm)
  1-inch (25.4 mm)
  1.5-inch (38.1 mm)
  2-inch (50.8 mm)