Piston Valve

• General Info

  A piston valve is a type of valve that uses a piston to control fluid flow in a pipeline. The piston moves back and forth within a cylindrical chamber, allowing for precise flow regulation. These valves are often used in applications where a tight seal is crucial, and they can handle high pressures and temperatures.
  
  Key Components
  Body: This is the main structure that houses the internal components. It is typically made from materials like stainless steel, brass, or other corrosion-resistant alloys.
  Piston: A cylindrical element that moves vertically (or horizontally) within the valve body to manage the flow. The piston may have sealing surfaces to ensure a tight fit and prevent leakage.
  Actuator: This device (manual, pneumatic, or electric) moves the piston, controlling the valve's position and flow rate.
  Seals: These create a tight barrier between the piston and the valve body, effectively stopping fluid leakage.
  
  Types of Piston Valves
  
  Single Acting Piston Valve
  Design: This type uses a single pressure source to move the piston in one direction. Usually, a spring returns the piston to its original position when the pressure is released.
  Applications: It is often used in situations where simple operation is sufficient, such as in water systems.
  
  Double Acting Piston Valve
  Design: This valve uses pressure sources to move the piston in both directions, offering better control over the flow.
  Applications: It is suitable for more complex systems that need precise flow management, such as in chemical processing or high-pressure settings.
  
  Pneumatic Piston Valve
  Design: This valve operates with compressed air to move the piston, allowing for quick actuation.
  Applications: It is commonly found in industrial automation and systems that require fast response times.

• Specification

  Piston valves, typically used for controlling the flow of liquids or gases in industrial applications, come in a variety of sizes. The common sizes for piston valves are typically based on the pipe diameter they are designed to fit. Some standard sizes include:
  1-inch (25 mm)
  1.5-inch (40 mm)
  2-inch (50 mm)
  3-inch (80 mm)
  4-inch (100 mm)
  6-inch (150 mm)
  8-inch (200 mm)
  10-inch (250 mm)
  12-inch (300 mm)
  
  The size selection depends on the flow capacity, pressure ratings, and the specific application. Piston valves are typically used for precise control and on-off applications in systems with higher flow requirements. Always consult manufacturer specifications to ensure you select the appropriate size for your system's needs.