it is called a Blow off valve or BOV. A BOV only works on a vehicle using a forced induction intake system, usually a turbocharged vehicle and it "blows off" or releases any of the left over pressurized air in the intake manifold when you let off of the throttle. For example, In a vehicle with an over sized turbocharger and no BOV, if you let off the throttle at full boost it could continue to force air into the vehicle causing it not to decelerate and in some cases actually force it to continue accelerating.
Septum Valves are installed after the dust collector venturi scrubber , to decrease the pressure of Top gas from the blast furnace to supply it to other processes at low pressure.
Blast Off happened in 1989.
We had a blast! The rocket is about to blast off.
What should be used to apply Blast-Off
Blast Off at Woomera was created in 1957.
The ISBN of Blast Off at Woomera is 0571063179.
Blast-Off Girls was created in 1967.
Blast Off - Transformers - was created in 1987.
Blast Off at Woomera has 187 pages.
The duration of Blast-Off Girls is 1.38 hours.
Blast Off - 2011 was released on: USA: 2011
Pop Off Valves