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View Full Version : Ejector Pit Venting - Will this work?


Jonstar
Feb 12, 2008, 11:51 AM
My house was built in the 50's so I've got a cast-iron stack that drops out to the road about 4' up my wall. I'm putting in a basement bathroom and need to vent the system properly. I've been on this forum to figure out how to vent my drainage but now I need to vent my ejector properly.

I can't get a 2" pipe up through the wall where my stack goes up to the roof. There is also a drain up higher in the 2nd storey that drains into the stack so I can't tie into the stack at all. I have a 1.5" pipe going out the roof that isn't being used on the other side of my house. I should be able to replace the 1.5" pipe with a 2" pipe and get in the attic to connect it into the roof vent (which is 3").

Here is the problem: The roof vent that I want to run would require an approx. 35ft. Horizontal run (on a slight grade for water in line). It would then run up to the attic (just one storey), then over another 3ft. Horizontal run then into the roof vent.

Is this a problem or will this vent work even with a run like that?

I've included a drawing.

As always, any help is much appreciated!

ballengerb1
Feb 12, 2008, 12:37 PM
Where did you tie in your ejector drain? That stack could be your wet vent.

massplumber2008
Feb 12, 2008, 01:48 PM
Jonstar... should be no problem on the run of vent as presented. Pitch it as mentioned and will be fine.