3/16" choker?

[Divinity Draft]

Alright here....for remote-draw systems...trying to maintain the 22 PSI pressure(20-25). Am I correct in understanding that to make up for any difference in restriction(should be = to applied pressure) I should use a certain amount of 3/16" line to adjust? If so, should this be applied at the pressure side or dispense side? I know that kool-rite towers have a certain amount of stainless choker built in; but what if I still need to compensate? And just to make it more complicated- does anyone know the restriction of common draft parts (shanks, faucets, nipples, reducers, etc...)? Alright experts- I need your expertise. Thanks a bunch!

[happytappy]

The choker line should go at the end of the run right before the shank. Splicers and tailpiece restriction is minimal if you are counting the very short length of hose that goes over it. 5" jumper with a sanke coupler is 1# extra resistance. Shanks are based on lengthand bore (3/16 1.2 #/ft 1/4 .30#/ft). For example a 4 inch 3/16 shank is 4 divided by 12 inch = .33ft x 1.2=.4 #) Koll rite towers are 7.5 # restriction

[Divinity Draft]

Thanks, but still a little confused. I'm running a trunk line underground to the tower but still need to add some restriction in order to make the system an ideal 22 PSI. Should I add a mini-section of insulated 3/16" lines between the end of the main trunk line and the tower? of course I would also have to extend the glycol lines within the newly created "mini trunk" of 3/16" lines. Would that be the most professional way to do this? Any help would be greatly appreciated. Also..... I am using 5/16" line and can't move up or down a size because it would get me further away from the ideal restriction. Thanks.

[happytappy]

What length of run is this ? Is it a Kool Rite tower ? With 3/16 at 3 #/Foot, you can usually pull back the insulation, splice in the 3/16, an re wrap it

[Scott Zuhse]

If you are using a gas blender, you can actually use both PSIG and choker line. Are you using a blender? If not, you may be focusing too much energy on flow speed rather then quality.

If you are, great! Based on type of tower you are using, system trunk line length, lift / drop and misc. items in keg cooler, you may require some 3/16" choker to balance out to 128 oz. / min. flow. Possibly you could deviate your target 22 PSIG slightly to eliminate the requirement for the 3/16".

Example: If your target is 22 PSIG (applied to keg). and the other pressure consists of a 120 foot 5/16" trunk line (12 PSI), Micro Matic Kool Rite tower (7.5 PSI), four foot lift (2 PSI) and one PSI for the misc. stuff at the keg station, then you would not require any choker at all.

But if your run is not this long, say 100', you might get away with dropping your PSIG to 20 and still not worry about the choker. Be aware that the lower the pressure, the more issues you may have with the system. This is why it is more beneficial to add choker, sometimes more than you need, and then increase your pressure to the keg to acquire the flow rate desired.

Sound confusing? Yup! This is why we spend over two hours during the Advanced Workshop to discuss. If you desire, send me a private message and I'll forward my phone number and we can discuss the details including how to complete the 3/16" choker connections.