Rotary Airlock Valve Capacity Calculator


Calculating the capacity of a rotary airlock valve is crucial for efficient material handling in various industries. This article presents a simple yet accurate calculator to determine the capacity of a rotary airlock valve. By understanding the formula and using the provided example, users can streamline their material handling processes effectively.

How to Use

To utilize the rotary airlock valve capacity calculator, follow these steps:

  1. Input the necessary parameters into the designated fields.
  2. Click on the “Calculate” button to obtain the result.
  3. Review the calculated capacity displayed on the screen.


The formula for calculating the capacity of a rotary airlock valve is as follows:



  • A = Rotor speed (revolutions per minute)
  • B = Rotor pocket volume (cubic inches per revolution)
  • C = Rotary valve speed (revolutions per minute)

Example Solve

Let’s consider an example where:

  • Rotor speed (A) = 50 RPM
  • Rotor pocket volume (B) = 10 cubic inches per revolution
  • Rotary valve speed (C) = 100 RPM

Using the provided formula: Capacity=50×10×100=50,000 cubic inches per minute

The calculated capacity of the rotary airlock valve is 50,000 cubic inches per minute.


Q: What industries commonly use rotary airlock valves?
A: Rotary airlock valves find applications in industries such as pharmaceuticals, food processing, agriculture, and manufacturing.

Q: How can I determine the rotor speed and pocket volume of a rotary airlock valve?
A: Consult the manufacturer’s specifications or conduct performance tests to obtain accurate values for rotor speed and pocket volume.

Q: Is the provided formula applicable to all types of rotary airlock valves?
A: Yes, the formula can be used for most rotary airlock valve configurations, but specific designs may require adjustments.


Efficient material handling relies on accurately determining the capacity of rotary airlock valves. By utilizing the provided calculator and understanding the underlying formula, users can optimize their processes and enhance productivity effectively.

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