Vacuum Valve

[Rickertsen2]

What you need is a non-air piloted valve. MAC Valves 35 series would work well for what i suspect you are doing.

I havn't looked at this year's rules, but in previous year's i don't remember anything prohibiting this setup.

The problem with the valves in the kit is that they are air piloted, that is they use a small internal valve to actuate a larger valve that actually controls the flow of air. Unfortunately, the pilot will not work off vacuum. Some piloted valves allow for the pilot to be driven from a dedicated positive pressure supply. I do no beleive that any of the valves in the kit can be adapted for external pilot supply. For an animation of how an air-piloted valve works, see the front page of www.macvalves.com