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Lance Marshall
(Lancem) - F - MLife

Locale: Oregon
Rigid bottle for Sawyer Squeeze dirty bag. on 06/24/2009 11:50:53 MDT Print View

While section hiking the PCT the past few weeks I observed a number of thru-hikers with Sawyer Squeeze filters attached to rigid soda/water style bottles.

It seemed pretty simple; no separate scoop, no need to unpack/empty a cook pot to scoop, and easy to retrieve, drink from and replace on the fly. But I wondered how they dealt with 're-inflating' the collapsed bottle after a squeeze or two. After watching one hiker loosen the filter between squeezes to 're-inflate' the bottle, I thought there could be a better way.

A simple check valve of some sort seemed to be good start. Here are some pictures of a check valve added to a Pepsi bottle. It works well and doesn't leak.

Duck-bill valve taken from aquarium check valve:
aquarium duck bill check valve

Duck-bill valve installed in appropriate size hole drilled with unibit:
check valve in bottle

check valve in bottle #2

check valve in bottle #3

Bubbles from valve during re-inflation:

check valve bubbles

check valve bubbles #2

Link to video: Windows Movie Format
Apple Quick Time Format
With the valve installed near the bottom of the bottle, the filter will even slowly gravity feed. (Gravity feed doesn't work well with the valve installed near the top, because head pressure inside the bottle keeps the valve shut.

Hope this is interesting and helpful.

Edited by Lancem on 08/03/2013 18:13:03 MDT.

James W.
(jimmyjam)

Locale: Mid Atlantic
MYOG My First Pack on 01/20/2012 17:59:55 MST Print View

Lance,

That's how I wanted it to look.Thanks for showing me how to do that.