relocating toilet - wye or sanitary tee at horizontal junction

[capww8]

Please see attached.

I am trying to put a washer in approximately the current toilet location, and move the toilet about thirty inches to the left.

I'm unclear as to whether the Y fitting shown should be a "wye" or a "sanitary tee"

I believe it should be a wye... just trying to double check.
The new riser for the washing machine will include a vent, everything indicated here is horizontal.

The next connection after the mission flange is a sanitary tee about six feet away that goes into the main soil stack.

 

[Terry]

I would need to vent the toilet line before the washer enters the line.
A tub, shower or lav can wet vent, but not a washer. A washer is a pumped fixture.

 

[Sponsor]

 

[capww8]

Can the two wye's install nearly back-to-back like this?

 

[hj]

As long as the toilet's vent is NOT horizontal.

 

[capww8]

There is a wall between the new / old toilet locations, so I can easily install a vent where the line runs under the wall, before it intersects the line from the washing machine.

Now back to my original question, should that be a wye or a sanitary tee?

 

[hj]

NEVER a sanitary tee in a horizontal line.