Fairchild Model 20813I Precision Pneumatic Volume Booster

The Fairchild Model 20813I is a high-precision pneumatic volume booster designed for industrial applications requiring rapid response and high flow capacity in control systems. This 1:1 ratio booster amplifies pneumatic signals to provide quick actuation of valves, cylinders, and other devices, ensuring stable output pressure equal to the input signal. It features a rugged aluminum construction with black finish for durability in harsh environments, such as chemical processing, oil and gas, and manufacturing plants. Key benefits include high flow rates up to 45 SCFM, low deadband for accurate control, and the ability to handle supply pressures up to 250 PSIG, making it ideal for boosting low-volume signals to drive large actuators efficiently. Compared to similar products like those from ControlAir or Norgren, the Fairchild 20813I offers superior sensitivity and faster exhaust capabilities, reducing system lag. Drawbacks may include the need for clean, dry air to prevent internal wear and a higher initial cost for precision engineering. This unit appears to be in surplus condition, tested and functional, with no visible major damage, suitable for integration into pneumatic control loops for improved performance and reliability.