Arch sprayer
Definition
A curved overhead pipe — usually 6–10 feet tall — with multiple downward-facing nozzles that creates a walk-through tunnel of falling water.
Arch sprayers are the iconic 'run through the arch' feature on most mid-size splash pads. Kids dart back and forth through the curtain of water, which is one of the most repeatable and engaging interactions on any pad.
Arches are usually installed in pairs or sequences for chase games. The water curtain is dense enough to soak in a single pass, so arches are typically placed away from electronics-friendly seating.