Procharger and Power Brakes

[buns]

I believe the device circled in the picture below is called a check valve and that it will only allow air to flow in one direction (out). Basically, I just wanted to re-assure myself that once the engine is under boost that there is no way for pressurised air to enter the vacuum chamber. Is this valve up to the task of stopping pressurised air, or is there something more " high tech" that I can use?

I realise that in normal driving conditions you let off the gas before you step on the brakes, but having been the victim of a stuck throttle pedal in my rear engined dragster.........I would rather be safe than sorry.


And, yes, I did crap my pants.