Backflow valve?

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r_green72

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We've been asked by our insurer whether our building has a backflow valve. Unfortunately none of the co-owners are sure what one looks like. Is there anyone out there that can confirm whether or not this is a backflow valve:
20140429_165454.jpg
 

OffshorePlumber

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Are you speaking of a domestic water backflow preventer? Or a backwater valve?

Which your picture shows neither.

A domestic water back flow has to be installed in an accessible location, usually in the front of the building or mechanical room. It will stop the siphoning of the mainline during a pressure loss from a city main or other pressure system.

A backwater valve is installed in a main sewer line and is a check valve that will keep city sewer from backing up into a building.

All I see on the water line is a gate valve.

And the sewer line is some hacked up ABS
 

hj

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quote;
All I see on the water line is a gate valve. And the sewer line is some hacked up ABS

You must have a better picture than I do, because I see neither, but whatever the picture does show there it is NOT a backflow preventer of any kind. A water backflow preventer goes on the water line near the point where it enters the building, and a sewer BWV is under the floor where the drain exits the building.
 

OffshorePlumber

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The gate valve looks dead.

I do see a 3/4" BV at the left hand corner of the picture on the 3/4" roll copper that's stretched out.

That ABS piping is fugly
 

Reach4

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Let me brighten your picture a little:
pix2.jpg
 
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