A One-Way Valve Out to Sea
6:58–7:36 · 38s
After fitting Tideflex valves at the outlet, water can exit but not re-enter—and someone inside the tunnel couldn’t push their way out, subtly shifting the site’s safety dynamics.
6:58–7:36 · 38s
After fitting Tideflex valves at the outlet, water can exit but not re-enter—and someone inside the tunnel couldn’t push their way out, subtly shifting the site’s safety dynamics.
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