Backflow Preventer / Check Valve?


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Old 02-16-11, 10:48 AM
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Backflow Preventer / Check Valve?

I live in a townhouse and was told I should install a backflow preventer on my house. The septic system backed-up into some of the houses in the community recently.

I have a 3'' PVC waste pipe in my basement. What type of valve should I put on this line to protect the entire house from a septic system back-up? Where should I install this?

Thanks.
 
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Old 02-16-11, 10:21 PM
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You should have a 3" backwater installed valve inside the basement, before any drains attach to the main line.
 
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Old 02-18-11, 03:40 PM
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Do these backflow valves cause clogs?
 
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Old 02-18-11, 09:57 PM
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If installed properly, then no they shouldn't.
 
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Old 02-23-11, 03:31 PM
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What are the chances of a backflow from a septic tank reaching my house if my plumbing is done correctly?

I just found out to install one I need to cut my dry wall to make it fit. As a result, I do not think I am going to install one.

Also, I was told they need to use a rubber connector on the PVC to connect the valve in. Is this true?
 
 

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