Kitchen sink redesign

[Rick Harris]

1950's house using septic tank. The sink drains into a vented vertical pipe outside the house with cleanout access. Appreciate ideas on how to improve draining. Opposite sink backs up when using disposal. Drain backs up regularly.

 

[hj]

1. the outlet at the wall is MUCH TOO high
2. the disposer is always full of water which has to be "pumped out" before draining can begin.
3. the "center outlet tee" probably does not have baffle, but it might be ineffective with this drain even if it were there.
4. Drain installation is COMPLETELY unacceptable

 

[Sponsor]

 

[WorthFlorida]

If it worked OK for years all the plumbing is now full of sludge because it can never completely drain. A 1950 house had very shallow sink depths and no disposals. If you cannot fix the drain height in the wall your only solution toss the disposal and sinks and replace the sinks. The least depth sink that can be found may only be 7" deep. 6.5" were available a long time ago but may no longer be manufactured. The sink drains would also need to be changed that are short. What has to be accomplished is the horizontal drain pipe from the sink must be above the waste line as shown below.

https://www.homedepot.com/p/Glacier...Double-Bowl-Kitchen-Sink-HDDB332274/206950727
https://www.homedepot.com/p/Glacier...ainer-in-Stainless-Steel-7043-103SS/207144421
https://www.homedepot.com/p/Everbilt-1-5-in-Plastic-Center-Outlet-Waste-C9123AB/205153786

 

[Rick Harris]

1. the outlet at the wall is MUCH TOO high
2. the disposer is always full of water which has to be "pumped out" before draining can begin.
3. the "center outlet tee" probably does not have baffle, but it might be ineffective with this drain even if it were there.
4. Drain installation is COMPLETELY unacceptable

If it worked OK for years all the plumbing is now full of sludge because it can never completely drain. A 1950 house had very shallow sink depths and no disposals. If you cannot fix the drain height in the wall your only solution toss the disposal and sinks and replace the sinks. The least depth sink that can be found may only be 7" deep. 6.5" were available a long time ago but may no longer be manufactured. The sink drains would also need to be changed that are short. What has to be accomplished is the horizontal drain pipe from the sink must be above the waste line as shown below.

https://www.homedepot.com/p/Glacier...Double-Bowl-Kitchen-Sink-HDDB332274/206950727
https://www.homedepot.com/p/Glacier...ainer-in-Stainless-Steel-7043-103SS/207144421
https://www.homedepot.com/p/Everbilt-1-5-in-Plastic-Center-Outlet-Waste-C9123AB/205153786

Exterior vertical pipe looks like the attached pic. What's the best way to remove existing portions of the verticle drain pipe to accommodate a lower outlet?

Thanks

 

[Terry]

You can drill out and pry out the lead that holds the pipe in the hub, and then use a rubber hub insert for 2" pipe.
Don't forget to pull the oakum from the hub.

Or you can cut the cast iron pipe and use a shielded coupling, EX heavy cast to plastic coupling.

New plastic pipe into a cast hub fitting. Yours would be on the vertical.

 

[WorthFlorida]

Is this by chance was a camp made into full time residents? There doesn’t seem to be a vent. Do you have a septic tank or city sewer?

 

[Mliu]

Is this by chance was a camp made into full time residents? There doesn’t seem to be a vent. Do you have a septic tank or city sewer?

It looks like the "vent" may be that stub of cast iron pipe covered with black duct tape!

 

[Terry]

Yes, not really a proper vent. Normally that daylights above the roof to disperse the vapors.
I wonder if someone cut it off at some point.

 

[WorthFlorida]

Yes, not really a proper vent. Normally that daylights above the roof to disperse the vapors.I wonder if someone cut it off at some point.

There is the kitchen sink window above it.

 

[Terry]

There is the kitchen sink window above it.

And normally the vent goes to the side of the window. Around the window. Pretty funny situation there.

 

[Mliu]

And normally the vent goes to the side of the window. Around the window.

Looking at the old paint on the wood framing below the window, it almost looks like there used to be a pipe routed to the left. I'm guessing the black tape was to try to stop the sewer gas odors from coming in the kitchen window!

 

[Rick Harris]

Yes, the pipe previously went around the window to roof level. I plan to replace that as well. Drill out the hub above the cleanout and replace with rubber hub insert for 2" pipe lowers the horizontal drain pipe below the cleanout going to the wall. That work?

 

[OLD TIMER]

if your on a septic system your not supposed to have a garbage disposal, anaerobic bacteria wont eat some food, and it messes up your system. take it out.