Gellfex
Member
Hi all. I'm planning to move the kitchen in an apartment, and need to tap a drain line into existing plumbing of 4" cast iron and 2" galvanized. Any critique or better plan would be appreciated. I don't trust the local plumbers to plan this stuff well, the last odd job it took 3 plumbers to finally get it right. I was advised to take this here for some expert eyeballs.
Since I don't want to mess with the ancient cast iron, I want to cut into the 2" lav & shower branch to mount PVC T's with rubber couplers. This apartment is identical to the ones above and below on the same vent & soil stacks. I'm not certain why there's a parallel vent coming from the unit below, there isn't a corresponding one from this unit to the one above which is the top floor, but I've only done the exploratory surgery on this unit, as the others are occupied. The run of 2" from the new kitchen sink to the vent is less than 7' so I should be okay with the local National Standard code. I know the vent to vent stack tie in needs to be 24" above the basin top.
Since I don't want to mess with the ancient cast iron, I want to cut into the 2" lav & shower branch to mount PVC T's with rubber couplers. This apartment is identical to the ones above and below on the same vent & soil stacks. I'm not certain why there's a parallel vent coming from the unit below, there isn't a corresponding one from this unit to the one above which is the top floor, but I've only done the exploratory surgery on this unit, as the others are occupied. The run of 2" from the new kitchen sink to the vent is less than 7' so I should be okay with the local National Standard code. I know the vent to vent stack tie in needs to be 24" above the basin top.
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