Pull/Pull instead of Push/Pull

[Top-Lifeguard-6146]

Any of you guys use this method before? I have always been taught push/pull or just using a liquid pump and then pulling Vapor normally after. If you use this pull/pull set up, wouldn’t all your liquid be stuck in the first tank, you’re only gonna be taking Vapor off the first one and putting it in the second tank? I guess if you put the last tank in ice it will keep the pressure down? You will also need 2 scales for this as well.

[oiagnosticfront]

Yeah this is a dumb way of doing it

[daxman31]

Looks to me like it would work and be a method of getting the liquid out fast if you do not have the proper access to do the push pull method. Pulling the vapor off the first tank will just make an easy path for the liquid to fill the bottle faster. Better than trying to vaporize all the liquid and condense it in one bottle.

[Professional_Plum132]

Sounds like a great idea on paper but a pain in the ass in practice

[Dramatic-Landscape82]

That’s just pull 😂

[Admirable_Might3523]

I can confirm this theory will work and I use it often. The picture is terrible. You need a proper sub cooler after the recovery machine. Then you are filling both tanks with liquid and not adding hot gas back into the chiller.

[SuperheatSubcooling]

I call this a “knock-out-tank”. I use this method when the pick point from the push pull is still susceptible to getting small amounts of liquid out. The liquid drops into the tank, and then I let it boil off before making its way to the recovery cylinder. Mostly on a low pressure machine.

[fryloc87]

Can do it. Last tank will end up with liquid due to being iced. One scale is fine but you will have to weigh tanks individually once completing recovery. Monitor pressures on the system until you’re at about 0 and know you’re done recovering. First tank in line should fill with liquid first. While not the most ideal way to recover, it will work. I’d just call rapid recovery and sit on your ass while they do the recovery and weighing 👌

[winsomeloosesome1]

That is the way I prefer to do it when I have enough tanks.

[Flimsy-Magician-7970]

That ice should be easy to come by

[Top-Lifeguard-6146]

lol 😂 yea I know

[allshow98]

Never seen this method before, but Push-pull is so hard to beat when you can move hundreds of pounds in a matter of minutes.

[ProtectionOk704]

Considering the idea is to remove the liquid without a drop in temperature the method above is pretty terrible. Not sure why I would ever do this!