Dual Tanks

Automotive Onboard Air Systems
1

Hey y’all,
Could you post pics of your dual tank setup? This may be a NOVICE question, but i’m planning on running dual tanks for a longer WOOT, but i want to make sure on that i know what im doing when installing that second tank.

Thanks!

2

I have duals, but not a single shot of both installed.

Here’s one side, and if I flop that photo - there’s the other side!

3

mind giving me the low down on how to hook up a 2nd tank?

4

BTW… Nice looking install!

5
  • Plumb each air tank as you wish, but tie the two together with a compression fitting on each - tied together with a section of air line. With a multi-tank setup that shares common air supply, make sure at least one of the air tanks has the appropriate safety valve to bleed off pressure in case of emergency.
6

Thanks for the pointers! Looks like i got a bit to learn :slight_smile:

7

Is that a debadged Cummins?

Kris

8

When plumbing the tanks together, make sure the air line joining them is as big as the output line you intend to use.

e.g.

A K5 using two five gallon tanks connected using a 1/4in line won’t work because a K5 uses 1/2in line. (In series, it would drain the first tank and be chaffed by the 1/4in as soon as its empty; in parallel it would always run low on air since two 1/4in lines still have a quarter the flow of a 1/2in line.)

It would work if the tanks had a 1/2in hose plumbed between them. (Or two 3/8s in parallel)

9

if i had dual tanks, i’d run dual 1/2" lines so the pressure would always be equalized fast

10

if you have dual tanks, do you need to have drain taps on both or only on the one directly plumbed to the compressor?

11

i’d do both since anywhere air is sitting compressed its going to create moisture…

12

Like he said… both since moisture will always sit in the bottom of each tank individually.

The only way to do so otherwise would be to mount on tank above the other one and plumb the bottom port down to the side/top ports… so the bottom of the top tank could drain into the other tank freely. Then you can put one drain on the lower tank.

13

Here is A Pic of 2 tanks on my silverado. There are A total of three, One five gallon in the bed and the two you see mounted on the pass side frame .

14

I have drains on both my tanks, but I have never gotten any moisture whatsoever out of my secondary tank. All of the moisture builds in my primary tank. The reason is: the line going from one tank to the other jumps between them in an up-and-over direction. No moisture can get to the secondary tank from the primary.

15

thanks guys. thinking of adding a little more airspace. :smiley:

16

Like a giant water trap =)

17

Here are some shots of my Duals



3/4" line ties them together at the front (behind the K3)

Plus I have drainage tubes and valves for each tank plumbed to the back for easy drainage.

I know it’s been said before, but tie them together using the largest tube/pipe possible (must be as big or bigger than your noid line).

Also, it’s best to run the noid from the secondary tank rather than the one connected to the compressor.

The second tank will usually have less water to drain, so that’s less moisture going through your horns :cool: