Double wye?

[Theodore]

Hi,

Plumbing my basement bathroom with a saniflo pump and I’ve a question about the correct fitting to use. Both the kitchen sink and lavatory sink will have dedicated vent pipes at their origin. Both drain pipes approach the pump at the same height from two separate directions per the sketch, so I would have a hard time using a typical wye or even sanitary tee to combine these pipes. Do I connect these two pipes with a double wye? If so, am I obligated to use the vertica/central leg of the double wye as a vent, or can I just cap it? It’s so close to where the pump intake will be, I wouldn’t even find it useful as a cleanout. Sorry if this is a dumb question, but I’ve never used a double wye so I’m not sure of the rules (if any) and would appreciate some advice.

Thanks,

Theodore

 

[hj]

That would be one way, but there are almost as many ways as there are fittings. A "Y" and an 1/8 bend, for example, would do the same thing without worrying about the center opening.

 

[Sponsor]

 

[Smooky]

How about this Y :

http://www.supplyhouse.com/Spears-P327-020-2-PVC-90-Double-Elbow?gclid=CMOrl9bQq84CFcsbgQoddfkG-w
http://www.pvcfittingsonline.com/3-dwv-pvc-double-1-4-bend-p327-030.html?gclid=COXhuYHRq84CFYQ6gQod5uIGIA
http://www.supplyhouse.com/Spears-P327-015-1-1-2-PVC-90-Double-Elbow

http://builtinvacuum.com/parts/all/installation/pipe-fittings/double-wye-pvc-3-way-connector/