Troy,

When using the squeeze filter as a gravity filter, what kind of flow rate do you get?

Also, what kind of adhesive did you use to connect the two caps on the output end? Did you just drill thru them both to make a hole afterwards?

Cant remember the flow rate off hand.
Seems like it was sub 2 min per quart with no prefilter.
Will check it later.

I do remember its slower using a aquamira prefilter in the bottle neck/funnel.

Remember the science experiment with the 2 soda bottles? I would skip the glue and buy a Tornado Tube (or something similar that would fit your bottle).

Gravity - One Liter = 6 minutes, funnel to filter directly to platy, IE no hose with no prefilter.

For reference using a Geigerrig as a pressurized dirty bottle will
filter 1L in about 50-55 secs. That is from starting to pressurize the bulb.

Platy will screw directly into the input end of the sawyer squeeze filter but I
dont think it would hold. Not a good tight fit at least on mine.

This is the geigerrig setup I used at 55 sec.
Although a good bit heavier, You dont need a funnel and you can carry 3L of water in it or use it as a bladder etc. As shown its about 11.2 oz.

+1 on the Tornado Tube
Knew I had seen one somewhere.
Will try one out.

Hum... My flow rate is much higher. With the "dirty" bag on my shoulder and the clean bottle waist high I filtered 1 liter in 1 minute 30 seconds.

I agree with Larry that you can obtain faster flow rates.

Part of this has to do with how much tubing you have between the dirty water source and the filter.

Static head pressure?

Not sure, but someeone much smarter than me posted up the science of how this works.

But I walked away from the discussion thinking that more tubing on both the dirty and clean side makes the gravity filter work faster.

-Tony

What about just having one 2L platy with the squeeze filter and drinking right from the other end of the filter? Filter as needed kinda deal. I would prob put a prefilter on the platy too.

-The Padawan

That would work and probably the lightest. Not sure about the flow rate though.

That's one way you can use a geigerrig.
Cut in a filter into the outlet line and use it as a filtered bladder.

Troy-
Is the bladder on the Geigerrig much easier to fill and close than the Platy Big Zip?
I have the same setup as yours with the larger Sawyer filter and find it difficult to fill the 2L Big Zip and to close it, especially in colder weather. Have you used the Platy Big Zip? The Platy collapses on itself when filling.

Edited by leadfoot on 01/13/2012 05:15:59 MST.

With the geigerrig you fold over the top and slide the clamp on. Its pretty easy if its out of your pack.

Sawyer bladders leaked right away...I use SmartWater Bottles (various sizes)...Tougher and cheaper than Platys, etc. These bottles are squeezable...No leaks.

Edited by todd1960 on 01/13/2012 22:41:55 MST.

I might start with platys but I could see me getting lazy with even the first replacement of them. Not to mention I can always switch to AM. I feel like I'm gona be pretty lazy on my thru.

-The Padawan