Speaking of the wet alarm valve device, i$®t is composed of a hydraulic a×σ≠§larm bell, a retarder and¶¥ a pressure switch, a pressure gauge,γ≈♠♣ a drain valve, a test valve, an a☆↔λlarm test pipeline, and the like. π<σThe wet alarm valve is only a o♠ ®ne-way valve that allows waterε§‍ to flow into the wet ←‌↕₩system and drive the alarm of the matched co©♣λ'mponents under the specified pressure flow; and t✔ he retarder is a device$✔§ applied to the wet alarm valve to prev↔δ↓$ent leakage of the water supply pressure and lea ¥kage of the alarm valve. The false alarm occurred↓✘≥; the hydraulic alarm is an all-weather sound ♥₩↔alarm facility driven by water. It has no '<$≥sparks during operation and can be used in ✘ ✔explosion-proof places. The hydra§±ulic alarm bell is compo≥>'✔sed of an aluminum alloy body, an alum→σβ€inum alloy impeller, an alum¥≈↕inum alloy bell shell, a copper alloy nozzle an₩♠d a copper alloy bushing. No maintenance ×®∞and long service life. The modern wet ♦≠≤alarm valve device and×₹♣ pressure switch, wate€λ™σr flow indicator, sprinkler, sign← al butterfly valve, end water test≥γ device, spray pump, etc."δ≠ form a ZS series wet automatic s©♠prinkler system, which is a widely ‌✘used automatic sprinkle↑σr system.