Home>Discussions>PLUMBING>Anyone know what this cap is?
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bryancandi
Anyone know what this cap is?

This large white cap is in my front yard near the house.

The water meter and shutoff are in the back.

Thanks.

A. Spruce
Re: Anyone know what this cap is?

Do you have a septic tank? It's probably a diverter for the redundant drain field. Take the cap off and have a look.

bryancandi
Re: Anyone know what this cap is?

Actually no, I am on a sewer system.

A. Spruce
Re: Anyone know what this cap is?

I'd still pull the cap and have a look. If you can't easily get the cap off, don't try.

MSSP
Re: Anyone know what this cap is?

I say it is a clean out for your sewer line

johnjh2o
Re: Anyone know what this cap is?
MSSP wrote:

I say it is a clean out for your sewer line

That would be my guess, but it should be a female and plug not a cap.

John

bryancandi
Re: Anyone know what this cap is?

Thanks for the replies.

That black pipe behind it with the threaded cap looks like the cleanout to me.

I tried pulling the cover off the white one, no luck by hand. I won't force it. My wife and I bought the house last summer, been wondering what it is ever since. No one I know seems to know, including the home inspector.

A. Spruce
Re: Anyone know what this cap is?

If your house isn't more than a few years old, the building authority may still have the plans on file for the house, which could give a clue. If you know the builder they may have the plans as well or even offer a suggestion as to what it is.

If it were me, I'd be inclined to carefully dig down and see if that afforded any clues. What is the diameter of the pipe in question?

bryancandi
Re: Anyone know what this cap is?

The house is 16 years old.

Pipe diameter, a rough guess of the top of my head I'd say it's about 8"+

A. Spruce
Re: Anyone know what this cap is?

The I'd say it's a poor mans access cover to possibly the water main, irrigation supply or some other water source. Still guessing though. :cool:

Blake
Re: Anyone know what this cap is?

This could be the cap on a backwater valve, similar to a Mainline "Adapt-A-Valve".

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