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2 gram back flush for sawyer squeeze
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Eric Brigman
(engine386) - F - M

Locale: Central Florida
2 gram back flush for sawyer squeeze on 06/25/2013 09:33:23 MDT Print View

After having my filter clog up on me in the middle of a backpacking trip, I was determined to find a better solution than the syringe. This is what I've come up with. (FYI, I have the older squeeze without the nipple on the outlet side).

I've always used the flip-top sports cap from a smartwater bottle, as I don't have to worry about using the lid. This makes up half of the the back flush.
For the other half, you just need one more smart water sports cap. Tear of the flip-cap and 'pop out' the blue center spout.... That's it, your done. When connected as in the photos, it snaps together to make a secure fit back flush with.Filter as normally usedSet up for a back flushLocked in placeOnly additional piece taken

All for the cost of a bottle of water.
I now use a evernew bag to drink from, but it also worked when I used to use a smart water bottle.

John Arwood

Locale: Mountians of East Tennessee
2 gram back flush for sawyer squeeze on 06/25/2013 10:27:46 MDT Print View

Thanks Eric. This is a nice light setup that uses already on hand materials. Way to go!

Ian B.

Locale: PNW
Well done sir on 06/25/2013 10:31:52 MDT Print View

Just ordered my Sawyer yesterday. I was struggling with whether or not to bring the syringe but at 2grams this is a no brainer.

Eric Brigman
(engine386) - F - M

Locale: Central Florida
Nipple on Sawyer on 06/25/2013 12:17:52 MDT Print View

I believe if you have a newer sawyer squeeze with the nipple on it, the flip-top cap tip should fit/snap into place onto the nipple.

stuart thomas
(linuxfree) - F
Filter on 06/26/2013 04:43:48 MDT Print View

Nicely done!

Drew Jay

Locale: Central Coast
Bravo on 06/26/2013 20:40:10 MDT Print View

This works great. I added some teflon tape to the threads on my Sawyer and Evernew bladder as it was leaking a bit from the threads, not a big deal.

Edited by drewjh on 06/28/2013 21:17:06 MDT.

Greg Mihalik
(greg23) - M

Locale: Colorado
Re: A parallel BackFlush thread - on 06/26/2013 22:03:59 MDT Print View

A Tornado Connection

Drew Jay

Locale: Central Coast
New Squeeze on 06/27/2013 05:28:17 MDT Print View

I tried this on the new-style Squeeze as well. It works even better! The tip of the SmartWater cap snaps onto the nipple very tightly.

(Joomy) - M
Awesome. on 06/27/2013 21:56:32 MDT Print View

I'm sold!

Drew Jay

Locale: Central Coast
More info on 06/27/2013 23:12:56 MDT Print View

I was asked for explanation, so - screw the Smartwater cap (unmodified) onto an Evernew or Sawyer bladder after adding some teflon tape to the bladder threads. Then with the cap removed from the Sawyer Squeeze, push the tip of the Smartwater cap onto the Sawyer Squeeze nipple. It snaps tightly into place and you can really put some pressure through the filter with a full bag.

Jeff McWilliams
(jjmcwill) - M

Locale: Midwest
Teflon tape on threads on 06/28/2013 07:39:06 MDT Print View


Won't you need to carry a roll of teflon tape with you on the trail? That stuff wears out pretty quickly if you have to remove the cap to fill the bladder, then replace it to drink from, or back flush the Squeeze.

Drew Jay

Locale: Central Coast
Teflon Tape on 06/28/2013 08:43:43 MDT Print View

I put about 8 wraps on mine and it seems to be holding up fine. You can backflush effectively without the tape, it just leaks a bit under pressure.


Locale: Western Michigan
***Clarification & NEW TRICK for Original SAWYER Filters to use in FIELD BACKFLUSHING*** on 06/28/2013 09:35:55 MDT Print View

Drew....I am still confused as to the process you have tried to described.

Being a visual learner a picture as I previously indicated would be of help to me to understand your method as I was unaware SAWYER made an update to the "push-pull" caps. I have one of the original SAWYER Squeeze Filters as Eric has and the "push-pull" nipple on our filter is larger than the Smartwater cap hole to fit and seat into.

When you mention Smartwater cap (unmodified) am I to assume you have not removed/pushed the BLUE spout out of the Smartwater cap?.........YES

Smartwater Bottle Cap

Have included pictures of various item associated with this thread that might be of interest for clarification.

Push-Pull Cap

Original Sawyer Squeeze Filter owners, you can FORCE the original "push-pull" nipple INTO an Evernew bag spout with some effort and likewise black flush. This set up facilitated backflushing as good as Eric's Method and SAWYER Syringe Method that I have used in the past. How it works in the FIELD is unknown on filter needing maintenance is unknown.

Direct Insertion Push-Pull Cap

Smartwater Bottle Cap Back Flush Set Up

If you get a change I would appreciate a picture of your set up......Thanks

Drew Jay

Locale: Central Coast
More on 06/28/2013 12:05:20 MDT Print View

Yes by intact I mean the blue spout is still in place on the SmartWater cap. If you remove the white push/pull cap from the (new model) Sawyer Squeeze there is a molded nipple (outlet) where you would normally fit the syringe. Just push the blue spout on the Smart water cap over that and it will snap into place. I will try and take a pic tonight.

Edited by drewjh on 06/28/2013 12:26:06 MDT.

Ken T.
(kthompson) - MLife

Locale: All up in there
Re: 2 gram back flush for sawyer squeeze on 06/28/2013 19:38:05 MDT Print View

I've tried this a few times now. The inside diameter of the blue tip fits over the nipple on the filter very snugly. It also bottoms out. I have no leaks using it this way.

Thanks again.

Edited by kthompson on 06/28/2013 19:39:52 MDT.

Richard Cullip
(RichardCullip) - M

Locale: San Diego County
Re: 2 gram back flush for sawyer squeeze on 06/28/2013 19:54:17 MDT Print View

Thanks for sharing this. I just tried it out at home and it works great. I've got a newer model Sawyer Squeeze filter and, as others have posted, the blue tip of the Smartwater cap fits over the nipple like it's made for it.

Drew Jay

Locale: Central Coast
Pics on 06/28/2013 20:57:51 MDT Print View

So a quick pictorial:

1) Replace the white push/pull cap on the new style Sawyer Squeeze with an unmodified SmartWater cap.

SmartWater backflush p1

2) Remove the cap from the Squeeze, screw it onto your bottle or bladder, and then push the blue spout over the nipple outlet on the Squeeze until it bottoms out. Done!

SmartWater backflush p2

Also, when testing this method a second time on the new Squeeze, I removed the teflon tape from the Evernew threads and there were no leaks. I'm not sure why the difference, perhaps I cinched the lid more, or the water pressure was less. But in any event, teflon tape isn't needed for the above method.

Edited by drewjh on 06/28/2013 21:19:50 MDT.

Daryl and Daryl
(lyrad1) - MLife

Locale: Pacific Northwest, USA, Earth
Right Bottle? on 06/28/2013 21:34:34 MDT Print View

Is this the type of bottle we are talking about here?


Richard Cullip
(RichardCullip) - M

Locale: San Diego County
Re: Right Bottle? on 06/28/2013 21:52:47 MDT Print View

Looks like the right one. I picked up a single bottle at a local Target. Just get the one with the flip-top lid and the blue nipple.

Harald Hope

Locale: East Bay
enough pressure on 06/29/2013 12:11:00 MDT Print View

I don't believe this bag backflush method provides enough pressure to backflush and clear out the entire diameter of tubules, the syringe provided provides a huge amount more pressure, not sure if I'd recommend or use this idea, and I'm somewhat surprised nobody has mentioned this problem in this thread, you may end up creating the center channel with clogged outer channels that sawyer warns about. There's apparently a fair number of reports of filter slowdown over time, one has to wonder if methods like this are not partially to blame.

If you use an adapter and a short piece of hose and a syringe with a tip that fits into the hose, you can get far far higher pressure for backflush, simple physics, force per square cm, plunger has more force, and that's brought down the small opening.

while appealing to get rid of the syringe, I would say that this is probably not the way to do it. On the bright side, I've heard that sawyers can now be bought at walmart for $36 though of course I don't advocate buying from that place, you can probably find it online for that price too, so ruining a few filters over time isn't really going to be break the bank.