mad1ben2
New Member
We have changed kitchen sinks and when I went to connect last night I've realized that I have a [potential?] drainage issue.
In a nutshell, I believe the sewer line in my wall is too high when compared to the drain pipe coming from my disposal.
Here is my attempt to explain:
The sewer drain is through the wall under the sink and is a 2" pvc pipe. The very bottom of that 2" pipe is 11 1/2" above the cabinet floor (point of reference). With the new sink, the bowl is deeper and coupling that with a garbage disposal, the 'exhaust' from the disposal is lower than the sewer line going into my wall.
The disposal drain line is 1 1/2" black pipe, it comes out the side of the disposal and takes a 90 deg turn to the floor. The very bottom of the horizontal portion of this drain coming out of the disposal (before it takes a 90 deg turn to the floor) is 12 1/4" up from the cabinet floor... so it is only 3/4" higher than the very bottom of the sewer line going back into the wall.
In my thinking, this is a problem for multiple reasons, but I'd like to hear your thoughts on how to correct (hopefully short of going into the wall and lowering my sink drain line!).
The issues I see are that if I find a way to hook this up as is (and it would be a rig-job!), the entire section of piping that connects the disposal to the sewer line going into the wall will act as a 'trap' since it will pretty much all be filled with water. I assume this will make the sink harder to drain.
Am I missing something obvious here!?
thanks for any quick advice you can give me. Scott
In a nutshell, I believe the sewer line in my wall is too high when compared to the drain pipe coming from my disposal.
Here is my attempt to explain:
The sewer drain is through the wall under the sink and is a 2" pvc pipe. The very bottom of that 2" pipe is 11 1/2" above the cabinet floor (point of reference). With the new sink, the bowl is deeper and coupling that with a garbage disposal, the 'exhaust' from the disposal is lower than the sewer line going into my wall.
The disposal drain line is 1 1/2" black pipe, it comes out the side of the disposal and takes a 90 deg turn to the floor. The very bottom of the horizontal portion of this drain coming out of the disposal (before it takes a 90 deg turn to the floor) is 12 1/4" up from the cabinet floor... so it is only 3/4" higher than the very bottom of the sewer line going back into the wall.
In my thinking, this is a problem for multiple reasons, but I'd like to hear your thoughts on how to correct (hopefully short of going into the wall and lowering my sink drain line!).
The issues I see are that if I find a way to hook this up as is (and it would be a rig-job!), the entire section of piping that connects the disposal to the sewer line going into the wall will act as a 'trap' since it will pretty much all be filled with water. I assume this will make the sink harder to drain.
Am I missing something obvious here!?
thanks for any quick advice you can give me. Scott
