How it works
How a residential fire sprinkler works.
The exploded-head scroll sequence (Brief §6 Showcase). Until the frames land, the exploded still with all step text visible — which is also the reduced-motion version.
Only the head above the fire opens.
[600–900 words, coverage target, written in step 6: head anatomy — the bulb, its rating and colour code, the deflector, the cover plate and its release temperature; then the whole system — supply, tank, pump, pipework, zoning, alarm interface. Includes the two points the old page made: accidental activation is rare; water damage is limited because a single head discharges. Every fact from a manufacturer data sheet or BS 9251:2021, verified before publish.]