trap for floor drain catch basin

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Timf

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Hi,

Can I use a running trap without a cleanout on a catch basin like the one shown here?

Or is a cleanout always required for that?

Thank you,

Tim

oil.jpg
 
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Timf

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Here is a little more information showing what I need to plumb the drains for. It is a small bathroom on the side of a pole barn. The catch basin, toilet, and sink will all go into the 4” drain pipe leaving the building.

thanks,

Timbath.jpg
 
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Timf

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Any advice or suggestions would be greatly appreciated.

thank you!
 

hj

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It is NOT a running trap, but if you EVER want the option to unplug it, you WILL want a cleanout somewhere, but maybe not in the pit where it would be "inaccessible" when it is full of water.
 

Timf

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It is NOT a running trap, but if you EVER want the option to unplug it, you WILL want a cleanout somewhere, but maybe not in the pit where it would be "inaccessible" when it is full of water.

OK, thank you very much.

I think I explained poorly. The trap would be external to the catch basin. The inspector said I need a trap and a primer for this use.

Does a trap like this look acceptable, with the left vertical being a vent?

running trap.jpg

Thanks for the advice on the clean-out. That is a good idea!
 
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Timf

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Sorry about all the questions and I appreciate the help. I'm just trying to verify the trap plumbing appears to be to code (UPC here) before I order the catch basin.

Please let me know if this looks wrong or if I can give more information.

thank you...
 

Tom Sawyer

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OK, thank you very much.

I think I explained poorly. The trap would be external to the catch basin. The inspector said I need a trap and a primer for this use.

Does a trap like this look acceptable, with the left vertical being a vent?

View attachment 16291

Thanks for the advice on the clean-out. That is a good idea!


Yes that works
 

hj

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IF the basin has an internal trap, like the one you show, then your proposal is completely wrong, and so is the inspector, because that would create a double trap, resulting in NO, or slow, drainage. You WILL need a vent on the line from the tank however to have a correct installation. When it came to oil, grease, and sediment, however, we used to have to install a "triple basin" setup.
 

Timf

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IF the basin has an internal trap, like the one you show, then your proposal is completely wrong, and so is the inspector, because that would create a double trap, resulting in NO, or slow, drainage. You WILL need a vent on the line from the tank however to have a correct installation. When it came to oil, grease, and sediment, however, we used to have to install a "triple basin" setup.

Thanks! I checked again with the inspector and misunderstood the trap requirement. I don't need the external trap, only a vent for the internal trap.

I do need to use a primer in the catch basin so will look for something that will work best for that. Any recommendations on the best type of trap primer, please let me know.
 
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