Air Lock -

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

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

Related resources for this article ... Courtesy of Elgood-Mayo Corp., Lancaster, Pa. Courtesy of Elgood-Mayo Corp., Lancaster, Pa. Britannica Kids Related resources for this article

: Historically used in underwater tunnels and bridge foundations (caissons) to transition workers from atmospheric pressure to high-pressure work zones. Britannica Kids : Historically used in underwater tunnels

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

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)

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

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

Related resources for this article ... Courtesy of Elgood-Mayo Corp., Lancaster, Pa. Courtesy of Elgood-Mayo Corp., Lancaster, Pa. Britannica Kids

: Historically used in underwater tunnels and bridge foundations (caissons) to transition workers from atmospheric pressure to high-pressure work zones.

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