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Old 11-01-2012, 07:18 PM   #1
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Check valve for main sewer


After getting 3' of sea water, sea weed, and sand in my basement from my toilet, I'm thinking of putting a check valve on my sewer main when I renovate. Anything I should look for? Are they effective? Should I install an actual shut off valve as an emergency measure just in case?

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Old 11-03-2012, 07:10 PM   #2
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Check valve for main sewer


Just bumping this. Anyone??

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Old 11-03-2012, 07:47 PM   #3
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Check valve for main sewer


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After getting 3' of sea water, sea weed, and sand in my basement from my toilet, I'm thinking of putting a check valve on my sewer main when I renovate. Anything I should look for? Are they effective? Should I install an actual shut off valve as an emergency measure just in case?

Thank you

Check valves work,and you have to be home to activate a shutoff valve.
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Old 11-03-2012, 08:05 PM   #4
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Check valve for main sewer


This is the one I install - at any depth.
http://www.rectorseal.com/Clean-Chec...ter-Valves.php
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Old 11-03-2012, 08:12 PM   #5
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Check valve for main sewer


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Check valves work,and you have to be home to activate a shutoff valve.
That's ridiculous. Back-flow preventers are automatic

http://www.youtube.com/watch?v=FMBznnNV-ss
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Old 11-03-2012, 08:33 PM   #6
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Check valve for main sewer


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That's ridiculous. Back-flow preventers are automatic

http://www.youtube.com/watch?v=FMBznnNV-ss


And who said they were not???
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Old 11-03-2012, 08:41 PM   #7
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Check valve for main sewer


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And who said they were not???
You did.

"you have to be home to activate a shutoff valve"
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Old 11-03-2012, 08:45 PM   #8
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Check valve for main sewer


I've also put this one in- pretty pricey though.
http://www.jrsmith.com/assets/docume...re/spm0216.pdf
It went into a basement of a medical building after being flooded twice. We wired the flood guard alarm to the receptionists desk so she would know if it activated- works off negative pressure.
This thing would probably take your finger off when it falls shut!
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Old 11-03-2012, 08:55 PM   #9
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Check valve for main sewer


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Originally Posted by rjniles View Post
You did.

"you have to be home to activate a shutoff valve"



As far as i know all back flow preventers are automatic,and a shut off valve has to be manually turned off,i guess you don't know the difference between the two.
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Old 11-03-2012, 09:16 PM   #10
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Check valve for main sewer


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Originally Posted by Canarywood1 View Post
As far as i know all back flow preventers are automatic,and a shut off valve has to be manually turned off,i guess you don't know the difference between the two.
Sorry, I misread your post and thought you said you had to be home to turn off a backflow preventer.
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Old 11-04-2012, 06:10 AM   #11
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Check valve for main sewer


Thank you - I will look into it. I can only see the sewer plug in my sewer trap, so I guess that means an lot of jack hammering in my future to access the main.

Thank you all
Matt
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Old 11-04-2012, 06:31 AM   #12
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Check valve for main sewer


Build a room with plastic that you are going to work in and cut the concert with a circular saw.
Only cut a quarter inch deep at a time and keep going over the same cuts till your through.
At the corners dill holes.
Depending on how much your cutting out cut it down to smaller chunks.
The first chunk will be hard to get out but the rest will lift out with some thinking and planning.

Last month I cut 3 16 by 16 squares and 45' of 9 wide for a trench. I had to replace all the cast under the house. I did all the cutting and moving the concrete in about 40 hours. Getting it all up the stairs was done a week later by day laborers.
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Old 11-04-2012, 07:23 AM   #13
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Check valve for main sewer


Check valves are not foolproof. Solid material in the waste water outflow from the house can hold the valve ajar and sewage can then back up although more slowly.

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