The diaphragm type rain shower★↑↔ alarm valve mainly uses a diaphragm to divide i♦↓δ≤ts main valve into u£≈‌<pper and lower chambers, and the upper chamber ≈§<is a control chamber. In♠α≈✔ this way, the main val€₹ve is sealed by utiliz↔•δing the difference in t<≤εαhe area of the upper and lower chambers to "β→ generate water pressure In the event of  ©&a fire, there are three ways to & control the main valve to open the fire×®✔≈. After the main valve is opened♠ , the pressure enters the pressure switc≥★h and the hydraulic alarm,♥₹$ and the hydraulic alarm soundsδ↓ε ; the pressure switch controls t©‌'he signal or turns on ♥δ±the fire pump. The diaphragm deluge valve₽★  has an anti-reset structure.​π>‌ After the main valve is ♦β>opened for 10%, the σ<anti-reset device is automatically activated to ↕✔prevent the main valve from retur€φΩ¶ning due to misoperation. Aftε≠≤er extinguishing the fire, cut off the trans≠®"mission pipe network, cloΩγ♠se the solenoid valve, man®∑>'ual ball valve and end ball vaγ≠lve to close the main valve.