Hi,
I have come across a pump(without any venting to main stack.) Here is the link to it.
Hartell > Products > Waste Water Pump > LTA Pump (http://www.hartell.com/corp/details/0,,CLI1_DIV32_ETI3869,00.html). It is a hartell direct mount sink pump. Is this pump valid per code? (International plumbing code)


Thanks
Sam.

Check with your Plumbing Inspector.