ARB Air lock requirments?

[Atomic]

I was wondering what it takes to run one. Obviously compressed air which I have. I have a 5 gallon tank with a viair 420c and a viair 380c. So what does it take in terms of air?

[stRanger]

I don't think it takes much at all... the compressor you buy from them is relatively small I do believe, you just need enough to accuate it i THINK.... maybe find their site and it will tell you exactly... shouldn't take much i would think.... you gonna ARB your 10b though?? that might get scary...

[Muddy01_Z71]

I was wondering what it takes to run one. Obviously compressed air which I have. I have a 5 gallon tank with a viair 420c and a viair 380c. So what does it take in terms of air?How do you like those air compressors i am thinking about running onboard air in my truck i have a 10 galon tank but no air compressor. how long does the 420 take to fill up a 5 gallon tank to 100 psi and how well does it keep up when you use it

[Atomic]

The 420c is a beast! Only bad thing is it pulls about 30 amps so you need to have your truck on when running it or your battery is toast (coming from someone that has a optima yellow top).

420C Air Compressor
(P/N: 42040)-Pewter
(P/N: 42042)-Chrome

• 12-Volt
• Permanent Magnetic Motor
• Duty Cycle: 33% @ 100 PSI
• Max. Working Pressure: 150 PSI
• Amp Draw: 29 Amps
• Min. Ambient Temp: -40° F
• Max. Ambient Temp: 158° F
• Dimensions: 10.00” L x 4.30” W x 6.50” H
• Net Weight: 8.00 lbs.


420C Tank Fill Rates
2.5 Gallon Tank Fill Rate
0 To 105 PSI 1 Min. 27 Sec.
0 To 145 PSI 2 Min. 20 Sec
85 To 105 PSI 17 Seconds
110 To 145 PSI 48 Seconds

5 Gallon Tank Fill Rate
0 To 105 PSI 2 Min. 55 Sec.
0 To 145 PSI 4 Min. 50 Sec.
85 To 105 PSI 35 Seconds
110 To 145 PSI 1 Min. 40 Sec.



The 420C features include a standard 3/8” stainless steel braided leader hose with inline check valve and insulated wiring for simple installation. * Must be used with a 150 PSI or lower pressure, non-adjustable pressure switch when used with an air tank.


420C Performance Data
PSI CFM A bar LPM A
0 2.54 15 0 72.0 15
10 2.26 18 1.0 63.5 20
20 2.12 21 2.0 57.5 22
30 1.94 23 3.0 52.5 25
40 1.84 24 4.0 48.0 26
50 1.70 26 5.0 45.5 28
60 1.62 27 6.0 42.5 29
70 1.55 28 7.0 38.0 29
80 1.48 29 8.0 34.5 27
90 1.41 29 9.0 29.0 26
100 1.27 29 10.0 24.5 25
110 1.20 28
120 1.09 28
130 0.95 27
140 0.85 26
150 0.71 24 *Supply Voltage: 13.8 Volts

The 380c is also good, not as fast as the 420c but its rated for a higher duty cycle and higher pressure. From the specs it looks like 0-100 on the 420c would be about 6 minutes.

[GREENSIERRA]

I have been thinking of getting onboard air aswell, what kind of things are you able to run with the 420? air tools?
what all would I need to get?

[Atomic]

If your wanting to run air tools youll probably need dual compressors with a higher duty cycle rating than the 420c (since its only 33%), and a bigger tank as well, on the order of 15-20 gallons

[bggrnchvy]

My 550c and 5 gallon tank would power my impact, obviously not continually but enough to get a 8 lug nuts off. I think it makes a lot more sense to add an engine driven comp, midify the sanden for CDA or go CO2 than it does to start running multiple electrically driven units to keep up with your necesary output.

I've since pulled my 550c and swapped in a 20lb CO2 tank for my OBA needs(tools, tires, ARB). No testing time yet to say how much better I like it on the trails but it should be nice.

For the ARB you need almost no CFM, as long as your lines don't leak. Just make the 40-50psi and of course recharge the small lines when you switch it off and then on. You do need to keep the line pressurized while its on.

[srlbotanical]

I just fabed up a mount for my 20lb CO2 tank and I love it. If you have the need for higher CFM rates then the only way to go is an engine drive or CO2. IMO...

But back to the original question, an air locker just requires line pressure, it dosen't actually "use" any volume of air. The line pressurizes to actuate the locker and depressurizes to deactivate.

[Atomic]

Oh so all I really need to do is maintain about 50psi? Could I use say, 200psi and the unit not break? Or would it be smarter to get a regulator and just run 50?

[bggrnchvy]

You will destroy the selas on the ARB if you try and run 200psi. ARB spec is 70 IIRC but they work just fine down belwo 50 so IMO thats where you should set it for o-ring longevity.

And yes, all you have to do is maintain line pressure.

[Atomic]

Thats what I thought, thanks.