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Old 06-11-2012, 02:14 PM   #1
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Default Blow Bags

There is a post on here about a blocked sewer that won't open


Blow bags are mentioned... Quite frankly I never heard of a blow bag.

So I Googled and found it was nothing more than a pulsating drain opener. Google is full of DIY info. YouTube even shows a few using them or explaining how to use them. Problem I'm having nobody cautions anybody on the hazards. "Just hook the [blow bag] to a hose.

How many carry a faucet-end vacuum breaker ???

Be truthful now, it's important. The backflow valves installed at the meters only protect the muncipal supply. They do nothing for the property your working in. Not too many wells are backflow protected. "It's up to the plumber to protect the health of the nation"
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Old 06-11-2012, 02:21 PM   #2
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Not only that....You can buy drain kings with an adapter to hook straight to your kitchen faucet....
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Old 06-11-2012, 02:26 PM   #3
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I have a 3' hose that hooks up to a faucet or hose bib then a double check then the longer hose that hooks up to my canvas sludge bag.

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Old 06-11-2012, 06:31 PM   #4
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I never heard of a blow bag till today either.
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Old 06-11-2012, 06:38 PM   #5
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Nice to have a hose threaded prv on the truck too. Arby's and some other chains have line pressure from the city to one of the hosebibs inside. First time I used a rubber blow bag...POP...
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Old 06-11-2012, 06:52 PM   #6
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I used to have a customer that has a condensate drain(in basement cement floor) from her ac that went out to her front yard. (this was a 7 or 8 hundred grand home) Her builder introduced me to her when the house was still under warranty.
He told me (quietly) that the drain went out to the front of her house.If it did it had to be at least 20 ft deep. I went to her home at least 6 or 7 times for that drain ,used a blow bag.
The builder paid me every time. I asked him why not pump it ouside(to the back) ,no good answer from him. My last trip I accidently(grin) left the bag with her hubby. Never heard from them again.
That was ONE time the bag was working(temp.) Jobs like that stay in back of my mind wondering WHAT EVER HAPPENED? I wanted to say more to HO but was hindered by builder.
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Old 06-11-2012, 07:02 PM   #7
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I split a blow bag down the middle a while back -- I honestly can't see anything making its way back into one and into the potable water supply. The design of the outlet is similar to the design of a Flushometer vacuum breaker.
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Old 06-11-2012, 07:12 PM   #8
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The only blow bags I use now is a drain dawg or the uniweld sludge sucker kit for a/c condensate drains. Canvas vs rubber?
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Old 06-11-2012, 08:14 PM   #9
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Quote:
Originally Posted by Gettinit View Post
Canvas vs rubber?


Canvas every time. The rubber ones suck.




I keep a hose thread vacuum breaker on my truck for my jetter. It also works well when using a blow bag, or even trying to do some hydro-boring under a walkway for a water service install.







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Old 06-11-2012, 09:36 PM   #10
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I don't use a vacuum breaker. I use my pump in a bucket connected to the hose. Air gap.
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