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| Serial Number | Area Name |
|---|---|
| 1 | Valve body |
| 2 | Diaphragm |
| 3 | Valve cover |
| 4 | Spring |
| 5 | Actuator |
| 6 | Reset Device |
| 7 | Dust cover |
| 8 | Moving iron core |
| 9 | Sealing ring |
Under normal operation, the valve functions in a normally open shut-off mode. It remains open without requiring any power supply, ensuring continuous gas flow.
When a leak occurs, the connected alarm system triggers an alert and instantly delivers a DC pulse voltage to the solenoid valve. This energizes the coil, causing the valve to close rapidly, cut off the gas supply, and enter a self-locking state.
During a gas leak, the alarm's capacitor continuously releases a 3-second DC pulse voltage to energize the coil, ensuring the valve is securely closed.
No, once the valve is closed and enters the self-locking state, it must be manually opened. However, if it receives another shut-off signal after being manually opened, it will automatically close again.
The valve achieves its pulse drive, automatic closing, and manual opening self-holding functions through the interaction of the coil's instantaneous electromagnetic force, permanent magnetic force, and spring force.
