Air — Lock

An air lock (or vapor lock) occurs when gas becomes trapped in a high point of a liquid-filled pipe system, partially or completely blocking the flow .

In engineering, an air lock is a chamber that allows people or objects to pass between areas of different air pressures without significantly changing the pressure of either environment. air lock

: Historically used in underwater tunnels and bridge foundations (caissons) to transition workers from atmospheric pressure to high-pressure work zones. An air lock (or vapor lock) occurs when

: Pharmaceutical facilities use them to prevent contamination by maintaining a pressure cascade between rooms. 2. Fluid Blockage (Plumbing & Irrigation) air lock