Blast Valve
Blast valve is suitable for the inlet or outlet of the ventilation system in the nuclear island, petrochemical and other fields. Blast valve has the ability to resist the destructive effects of shock waves, and can resist tornadoes and typhoons.
Blast valve can be quickly shut down once an explosion wave or tornado occurs, to prevent the ventilation system from being subjected to the impact of instantaneous pressure, and to ensure the safety of the ventilation system and equipment.
Specification
- Air flow: 535 m³/h @ 100 Pa; 770 m³/h @ 200 Pa
- Closing time: Ts ≤ 0.6 ms @ 20 bar
- Shock loading with maximum acceleration: 60g
- Blast resistance: Reflected peak pressure Pr ≥ 2 MPa
- Temperature resistance: −40°C ~ 300°C for 180 minutes
- Corrosion resistance: Passed 1440 hours salt spray corrosion accelerated test (Standard: ISO 9227:2017)
- Cyclic pressure test: −4300 to 4200 Pa, 5 cycles of wind pressure impact; blast valve is not damaged
- Installation: Horizontal, vertical, or roof installation without any limitations
- Material: Body and leaf are made of aluminum alloy; frame is made of stainless steel
- Minimum closing pressure: Pc = 2500 Pa
- Automatic reset: After the explosion shock wave disappears, the blast valve can automatically reset. The automatic reset function is not affected by the installation method.