In the kitchen there are two sinks side by side which share a common drain. One sink has a garborator. It drains ridiculously slowly. The other sink drains faster but I've been told it doesn't actually because it has more space underneath for the water to go so it only appears to drain faster, or something like that. The garborator is basically never used. Is there anything I can do to speed of the the draining of the sink(s)? I'm not sure if it's relevant but I think the gorborator is broken or doesn't work well.
Plumbing – ny way to make a sink connected to a garborator drain faster
garbage-disposalplumbing
Related Solutions
I can only think of three options here...
Water flows downhill
The first (less optimal) option, is to raise the discharge up and allow it to flow down to the drain connection. In this scenario, you'll want to have the discharge tube go up to an air admittance device (AAV) or air gap. From there it should flow downhill (1/4" per foot), until it reaches the garburator connection.
Use a separate drain
The other option, is to discharge the dishwasher to its own drain. Install a properly vented standpipe near the dishwasher, and connect the discharge tubing to that (follow local plumbing codes).
Go under the floor
The last option is to run a drain line under the floor, and attach to the sink drain below the floor. Install a trap near the dishwasher, and run a proper drain that tees into the sink drain (follow local plumbing codes).
Probably not, unless it's just lightly plugged with a thin flash (eggshell thickness or so) you can break through without breaking the overflow channel (either out to the underside or in to the sink bowl.) If it's a plug of thickness similar to the channel walls, I doubt you'll get through it without going wrong in one of those directions.
This should have been inspected and found at the time of original installation when it would more easily have been resolved by return to the supplier for a correct one. If you have a really top-notch supplier that might still be possible.
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Best Answer
I would just remove the garborator if it is unused. Over time, it will become clogged since it's internal holes are smaller than that of a normal drain. You could try cleaning it out by throwing some lemons in it and running it for a while.
Your real problem may be a clogged drain though. In the good drain, fill the sink completely and let it drain. If it becomes slow at any point, you need to have the drain cleaned.