Tank to tank fill?

[BigRed96]

Hi All, I recently was certified to do tank visual inspections. I have quite a few tanks and economically it made sense. My question is that I don’t want to leave my tanks empty to long after an inspection and getting them filled right away isn’t always an option. My idea is to use what I believe to be called a whip and add air from a full tank to a empty tank. Has it does anyone currently do this?

 

[Oldbear]

I do it often while Sidemount diving. During a surface interval I will use one tank and trans fill my two Sidemount tanks then do another dive.

 

[rob.mwpropane]

Exactly how you think. It's super simple. Connect both tanks, open both valves. Get a whip with a gauge, open empty tank all the way, open full tank just a little. Watch the gauge. When you hit 2-300 psi stop.

Done.

I (and many, many divers before me for many moons before me) have done this at home, in the van, on the shore, at the quarry, and on a boat.

 

[GF99/99]

You can pick one up from DGX for $120. DGX Gas Transfill Hose with Analog Gauge

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[James79]

I'm cheap, so I use a variation on the @couv method ( Tank Equalizer for $2.50 )
I just use a spare air fil adapter I had laying around instead of a 2nd first stage.

Respectfully

James

 

[GF99/99]

I'm cheap, so I use a variation on the @couv method ( Tank Equalizer for $2.50 )
I just use a spare air fil adapter I had laying around instead of a 2nd first stage.

Respectfully

James

Wow nicely done! I like your way much better than my way. A while back I was trying to make a cheap one so I bought two of these 7/16" to 1/4" NPT OmniSwivel Adapter: 1/4-Inch NPT Male = 7/16-Inch F and took a 1/4" male to male NPT hydraulic hose from work and connect two reg together like this. Cost me $30 obviously your way is a little more clever than my way.

 

[James79]

Wow nicely done! I like your way much better than my way. A while back I was trying to make a cheap one so I bought two of these 7/16" to 1/4" NPT OmniSwivel Adapter: 1/4-Inch NPT Male = 7/16-Inch F and took a 1/4" male to male NPT hydraulic hose from work and connect two reg together like this. Cost me $30 obviously your way is a little more clever than my way.

I can't claim credit.... I only stand on the shoulders of giants! Couv is the real mastermind of the idea.

 

[lexvil]

Last time I looked piranha had a nice whip available for less than $90, I fill my pony’s from my HP tanks all the time.

 

[rob.mwpropane]

I'm cheap, so I use a variation on the @couv method ( Tank Equalizer for $2.50 )
I just use a spare air fil adapter I had laying around instead of a 2nd first stage.

Respectfully

James

This method is cool, however the only place I can see it being viable is at the house or in the back of a vehicle. I like that my whip stays in my bag, easy to use. Bleeder built in...no issues on a boat, and I bought mine used for $70 shipped from a SB member. Rocking on a boat and removing spg's from 2 different regulators....I would for sure envy the guy standing next to me having a whip (I would most likely ask to borrow it!).

I like @couv thinking outside the box....definitely would work in a pinch. I guess it just depends on the end goal.

 

[Jim Lapenta]

I've mixed nitrox like this. Servicing regs and needing to use cylinders for supply pressure, I have two whips and do it all the time. Surprising the VIP class did not cover this.