An air check valve allows air to flow in only one direction, preventing backflow. According to the reference video, air can pass through the valve one way, but if you flip it and blow into it from the other direction, nothing gets through.
In essence, a check valve ensures unidirectional flow through a system using a simple mechanical design.
Here's a breakdown of the working principle:
- Unidirectional Flow: The primary function is to permit flow in only one direction.
- Valve Closure: When the flow attempts to reverse, the valve automatically closes.