Problem with my kitchen sink drainage.
Before I renovated my kitchen, I had a normal surface mount sink. I replaced it with a double deep farm style sink. It projects significantly lower into the cabinet, and what I notice is the over time the drain gets clogged, mostly the branch of the pipe that drains the adjoining sink, not the one where the garbage disposal is located.
It was not problem with the old sink and here is what I think is going on. The clearance from the drain of the garbage disposal is 12” above the bottom of the cabinet. The height of the drain coming out the wall in the back of the cabinet is 10” above the bottom of the cabinet, so there is only a 2” difference in height for drain action through the trap. Therefore, I think the hydraulic action of water draining, by virtue of a only 2” difference in height, makes this action weak. There are two sinks draining into one trap, and those are designed so there are some constructions which makes it easier for food to get caught...however the food has to be blow back from the garbage disposal. The other sink has a dish drainer in it, where handwashed dishes get placed to drip dry. In addition, the drain traverses out of the back of the cabinet (coming forward) 8” level before starting down to connect to the trap that connects both sinks.
- Possible solution, start the drain that comes out of the back wall (currently 8" level), down sooner.
- I can lower the trap about 4 inches, but the differential between the disposal drain, and the height of the drain going into the wall will remain the same.
- I’m not sure if 2 traps would be better, one for each sink would work with a single drain out.
- Look for a shorter garbage disposal, but the disposal part above the motor is 6" tall. Overall shorter I don't think this would help me if the drain height remains 6" below the bottom of the sink.
So, I’m soliticiting opinions on how to minimize these clogs. So far, I’ve had to take the drain apart 4 times to clean it out. Thanks in advance for the anticipated help!!