Outer Limits 4x4 Board

I have set up an air tank to run a few items in my comp truck. I have 70psi on and 100psi off pressure switch, I need 100psi for the air locker and the air freespool, but I have an air ram engaging 4wd/2wd and I want to drop the pressure to 20ish psi to hold it in place and I was thinking of putting 5psi into the dizzy. What is the best way to do this? Do I need two separate mini regulators or can I get some sort of preset pressure valve that will only let some much pressure through?

Seperate regs would be the go... You can get small pressure valves like sometimes used on sprayguns but the output pressure changes with the input so not constant.

Yeah I've grab a few types, i think a reg with a gauge is the go. I have the valves too, but its a bit hard to tell how much psi is going into it and it could be easily bumped.

I have SMC regs on my air gear and they have a spring loaded lock on the adjuster.. No bumping possible.
Other brands may be the same.... ????

who'd you get them through?

SMC!

Festo also do regs and many other brands.

Try a pneumatics place? Tool supplier?