Basement Ejector Pump Venting for Washing Machine
I have an existing wet vented ejector system in my basement floor. I am planning on adding a washing machine drain to this system and have some questions about the best way to do this.
I have an attached proposed diagram to help explain the system and questions that I have.
If anyone has better suggestions - feel free to suggest and I can update the diagram :}
My questions about this proposed rough-in:
1. Can the washing machine vent "C" share the stack with ejector pump?
(best if it does not, but I do not have another accessible vent)
2. Does this washer drain need to be vented in the first place?
(since rest of system is wet vented - will add or not adding the vent cause trap problems?)
3. Curious, can vent “C” be 2" pipe instead of a standard 1 1/2" pipe
(Is there a reason that standard vents are 1 1/2" for flow, etc.?)
4. Should I vent sink “E”? or leave it wet vented like the rest of that system?
Will venting cause problems pulling the traps?
Thanks and look forward to recommendations!
Updated image to reflect John's input
Thanks John - Updated image to reflect your recommendations