Free Flow vs. Working Flow vs. Rated Flow: Understanding Micro Air Pump Performance?
You chose a micro air pump rated at 20 L/min, but it’s delivering far less in your device. This performance gap can cause project delays and system redesigns. A micro air pump’s advertised flow rate is often its "free flow," measured with no resistance. The real performance, or "working flow," depends on your system’s pressure. […]
Why Do Two 11 L/min Micro Diaphragm Pumps Inflate and Repressurize the Same Air Bag at Different Speeds?
You selected two pumps with the same 11 L/min rating. Yet, one inflates your air bag much slower, jeopardizing your project. This guide explains why. The 11 L/min rating is "free flow," measured with no back-pressure. System performance depends on the pump’s ability to maintain flow as pressure increases and to restart against residual pressure. […]