Product Description：
This series is industrial-grade flameproof solenoid valves. The valve is opened by manual reset and closed by AC/DC pulse signal, with latching function for on-off status.
As a safety emergency cut-off device for gas pipelines, the electromagnetic gas emergency shut-off valve can be connected to gas leakage alarm systems, fire protection systems and other intelligent alarm control terminals. It supports on-site and remote emergency gas cut-off via automatic or manual operation, guaranteeing safety of gas pipeline transmission and gas utilization.
In case of gas leakage, the alarm will send power signal to the solenoid valve to realize automatic closure. The valve can only be reopened manually, which complies with safety management regulations and gas accident handling requirements.
Product Features：
※ Flameproof type: The explosion-proof cover is made of steel. It is outdoor waterproof, impact resistant and resistant to ambient temperature changes.
※ Valve closing mode: Closing by de-energizing the coil or manual operation.
※ Valve opening mode: On-site manual operation, complying with gas accident handling requirements.
※ Holding mode: Bistable function, maintaining open or closed state without power supply.
※ Closing speed: Less than 1 second.
※ Structure: The internal medium is completely isolated from the exterior for high safety and reliability.
※ Static sealing: Three-point alignment structure (guide pin, manual rod, piston) ensures tight sealing.
※ Dynamic sealing: Two-stage sealing structure. The dynamic sealing ring adopts automatic wear compensation to extend service life. Patented technology.
Product Selection：
| Thread | Nominal Diameter (mm) | Pipe Thread | Dimensions (mm) |
| L | H | H1 | / |
| DN25 | G1" | 100 | 235 | 210 | / |
| DN32 | G11/4" | 150 | 265 | 230 | / |
| DN40 | G11/2" | 150 | 265 | 230 | / |
| DN50 | G2" | 155 | 285 | 245 | / |
Note: In all tables: L = Length, H = Height, H1 = Center Height.
| Thread | Nominal Diameter (mm) | Dimensions (mm) |
| L | H | H1 | ∅D | ∅K | N-∅1 |
| DN25 | 150 | 265 | 210 | 115 | 85 | 4-∅14 |
| DN32 | 215 | 300 | 235 | 135 | 100 | 4-∅18 |
| DN40 | 215 | 305 | 235 | 135 | 110 | 4-∅18 |
| DN50 | 220 | 320 | 245 | 160 | 125 | 4-∅18 |
| DN65 | 280 | 420 | 335 | 180 | 145 | 4-∅18 |
| DN80 | 300 | 450 | 355 | 195 | 160 | 8-∅18 |
| DN100 | 355 | 480 | 375 | 215 | 180 | 8-∅18 |
| DN150 | 480 | 600 | 460 | 280 | 240 | 8-∅23 |
| DN200 | 550 | 810 | 640 | 335 | 295 | 12-∅23 |
Note: In all tables: L = Length; H = Height; H1 = Center Height; ∅D = Flange Outer Diameter; ∅K = Bolt Circle Diameter; N-∅1 = Quantity and Diameter of Bolt Holes.
Structure Drawing：
