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Old 10-01-2016, 09:23 PM   #1
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is this vent needed and hows the plumbing?


hello all

i have been living in this house for 3 years now. it is located on long island. wr have a above ground waste line going to septic tank. we havent had any problems with back ups or even haveong to snake out waste line untill this past wensday. i had a was on and it over flowed through the drain pipe that it was connected to because the main trap was clogged. now thank goodness the bsmt wasn't finished cause it would have ruined the tile and walls. i now want to i stall a check valve wjere the washing machine waste line goes into so it cant back flow outta that pipe. also i see the pipes have a little vent where the washing machine waste water flows to. is that needed? u will see in the pics on whay im talking about. i know u need a vent stack through the house that i have so im loooing on some advice here on if i need tjat lil vent and can i install check valve in washing waste line. any information would be great.









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Last edited by charles3526; 10-01-2016 at 09:32 PM.
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Old 10-02-2016, 05:55 AM   #2
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Re: is this vent needed and hows the plumbing?


Imo, I would leave the aav vent alone and put a check valve in the 4in main sewer line before any drain lines for added protection. That would better protect your home aganst any backup of sewage.
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Old 10-02-2016, 06:32 AM   #3
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Re: is this vent needed and hows the plumbing?


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Imo, I would leave the aav vent alone and put a check valve in the 4in main sewer line before any drain lines for added protection. That would better protect your home aganst any backup of sewage.
ok that sounds good but if installed how then would i now that I have a clog? at the trap?

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Old 10-02-2016, 08:34 AM   #4
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Re: is this vent needed and hows the plumbing?


I suggest putting a tee on the washer stand pipe, have an AAV coming out of the top, put the washer hose in the side of the tee with a plug to seal it. You could just put a check valve in the washer stand pipe but it may tend to cause blockages.

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because the main trap was clogged
Are you saying you have a whole house trap somewhere?
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Old 10-02-2016, 10:18 AM   #5
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Re: is this vent needed and hows the plumbing?


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I suggest putting a tee on the washer stand pipe, have an AAV coming out of the top, put the washer hose in the side of the tee with a plug to seal it. You could just put a check valve in the washer stand pipe but it may tend to cause blockages.



Are you saying you have a whole house trap somewhere?
i have the trap before it goes into the street/septic tank.thats where the clog was



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Old 10-02-2016, 11:43 AM   #6
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Re: is this vent needed and hows the plumbing?


That will not fix your problem. Get your sewer cleaned professionally. Your most likely rooted. Or you septic tank needs pumped.
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Last edited by Ghostmaker; 10-02-2016 at 12:12 PM.
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Old 10-02-2016, 03:09 PM   #7
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Re: is this vent needed and hows the plumbing?


well being one back up in three years shouldnt that say that its clear? i just want to be able.to not have another.back up

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Old 10-04-2016, 07:46 PM   #8
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Re: is this vent needed and hows the plumbing?


No. Washing machine dump a lot of water it is usually a sign of more problems to come. Roots take time to grow.
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Old 10-05-2016, 03:53 PM   #9
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Re: is this vent needed and hows the plumbing?


Looking at that set up you have a couple items not to code not piped in correctly, however not the cause of any back up..
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Old 10-11-2016, 06:13 AM   #10
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Re: is this vent needed and hows the plumbing?


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Looking at that set up you have a couple items not to code not piped in correctly, however not the cause of any back up..
whats nt pipped in correctly? i have been here three years idk what the other owners did my home inspection didnt say anything. but i was thinking of removing the washing machine waste line and hooking that upto a outside garden hose and not let it drain into house wasteline then go into septic tank. question if i remove that pipe for the washing machine waste line i can also remove the pipe that vents it also its in the pics. therefor all the other pipes would be vented through the main vent.

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Old 10-11-2016, 06:05 PM   #11
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Re: is this vent needed and hows the plumbing?


The garden hose thing would be called grey water...and in some places it is not exactly legal. Ron
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