@AlphaSixSierra 19일 전 Actually, there is a small liquid filled glass capsule in each sprinkler head that hold a valve closed. The capsule is designed to burst at a specific temperature releasing the valve and allowing the water to flow out. 2026-08-20 12:26 [ytcid:Ugzsx1QDwngCTLVxblZ4AaABAg] Actually, there is a small liquid filled glass capsule in each sprinkler head that hold a valve closed. The capsule is designed to burst at a specific temperature releasing the valve and allowing the water to flow out.