Definition
An air lock (also spelled airlock) is a bubble of air trapped in a pipe or system, preventing the proper flow of liquid. It's like a traffic jam in a plumbing system π. The trapped air can block the flow of water or other fluids, causing malfunctions. It can be tricky to remove and requires specific techniques to restore proper flow. Unlike a solid blockage, it's caused by a pocket of gas. Think of it as a 'ghost' in the system, unseen but disruptive.