阀门 (fá mén): valve (mechanical)

The repair worker noticed the pipe was leaking and quickly shut off the valve on the wall, so the water stopped spraying out.

Before the heating season begins, the property management checks the valves in each building to ensure heat can be delivered normally to every household.

In chemical plants, workers must regularly inspect and maintain the valves on pipelines to prevent toxic gas leaks.

The heart is like a water pump; its valves act like control valves, keeping blood flowing in one direction.

After the firefighters arrived at the scene, they immediately closed the main gas valve to avoid an explosion.