jamesgangnc wrote in
:

On Jun 3, 9:45*am, Sam Takoy wrote:
Hi,

I have a copper sink in the bathroom and because it doesn't have an
overflow, the water drains very slowly. It is not too much of a
problem, because as the sink begins to fill, it drains more quickly
due to gravity, but as it drains down, the rate slows down
dramatically.

But my kitchen sink (as most kitchen sinks) also doesn't have an
overflow, but doesn't have the same problem. How come? Is it because
kitchen sinks have a larger drain?

Thanks!

Sam

Where is the vent for this sink? The overflow is not supposed to
serve as a vent. If the vent is too far away you might look at adding
an inside vent. Lowes has them. Is there a cabinet under the sink?

In the absence of a vent,wouldn't the sink drain very fast towards the
end, because it is now siphoning? Perhaps more a problem with a lack of
pitch of the line draining the sink, so towards the end the drain line
is full, but doesn't get emptied easily. Sam, is the drain also getting
to drain slowly if you keep the sink full (with some big buckets of
water, or by keeping the tap wide open)? If not, that would perhaps
suggest my guess is right.

--
Best regards
Han
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