recommendation of secondary regulators.

[divi2323]

Originally.I started with 4 primary regulators (taprite 740s) with valves on each to start and stop flow. They are all chained to my tank through a high pressure hose. They work great, but... I think it might be overkill. I'd like to drop two of these and use lower pressure secondary regulators downline from my primaries.

I have a ton of store credit from the local Grainger supply, so would anyone have a recommendation of some co2 secondaries from their catalog? I see they have some air regulators for $7-$30 range that will take pressure from about 100-120 psi.down to the 5-30 range nicely, but they don't say specifically they are rated for co2. However I have a hard time thinking they wouldnt regulate co2 due to the amount that normal air has in it anyway.

 

[Double_D]

Generally the difference in the regulators is the threads. If they're secondary they're connected via a gas line.
I use these:http://www.micromatic.com/draft-keg-beer/regulators-pid-8011.html but grainger doesn't carry anything close.