Lock — Air

: Vital for space vehicles, allowing astronauts to exit for spacewalks while keeping the cabin pressurized.

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 . air lock

Related resources for this article ... Courtesy of Elgood-Mayo Corp., Lancaster, Pa. Courtesy of Elgood-Mayo Corp., Lancaster, Pa. Britannica Kids : Vital for space vehicles, allowing astronauts to

: Air can enter a system during maintenance, pump restarts, or through dissolution in the liquid itself. air lock - Students | Britannica Kids | Homework Help Courtesy of Elgood-Mayo Corp

An is a device or physical phenomenon involving trapped air that regulates passage between different pressures or blocks the flow of liquids . Depending on the field—whether aerospace, plumbing, or medicine—an "air lock" serves very different purposes. 1. Pressure Regulation (Engineering & Aerospace)

: It can lead to sputtering faucets, no water flow in gravity-fed systems, or the failure of pumps that rely on liquid for lubrication.