Stevemac00
New Member
I currently have a wall hung toilet with the outlet attached directly to 3" copper stack.
I'd like to move it horizontally and use a Geberit Wall Carrier with a horizontal tailpiece and connect to the stack with a sanitary tee. That part doesn't cause any issues. (original thread here https://terrylove.com/forums/index....and-duravit-toilet-install.60631/#post-452399)
Now, I'd also like to add a wall hung bidet on this same horizontal circuit. It would connect between the toilet and stack with a horizontal wye. The bidet would be vented separately into a 2" vent as shown. The wye would be a 3" wye with a 2" inlet. The bidet has a 1-1/4" trap and tailpiece.
I've attempted to diagram the system and all horizontal runs are sloped 2% (though not shown).
The inspector has visited the site and given verbal approval of my plans but a Master Plumber has expressed concern about not having another vent between the toilet and stack (as I understand it). He states:
"""
There are two floor outlet fixtures, so they need to be circuit vented in order to keep them in the same horizontal plane, wet venting is not an option. A circuit vent requires the vent portion of the pipe to remain full size up to the point of vent, that means 3” until vent is tied in. A 3” x 1-1/2” san tee and a 3” x 1-1/2” wye for the bidet is the minimum drain and venting scenario. The way you are drawing it, the bidet is individually vented and the toilet isn’t vented at all, because the bidet enters the 3” drain portion before the vent stack does.
"""
I don't see why adding the bidet means the toilet isn't vented at all. What am I missing?
I'd like to move it horizontally and use a Geberit Wall Carrier with a horizontal tailpiece and connect to the stack with a sanitary tee. That part doesn't cause any issues. (original thread here https://terrylove.com/forums/index....and-duravit-toilet-install.60631/#post-452399)
Now, I'd also like to add a wall hung bidet on this same horizontal circuit. It would connect between the toilet and stack with a horizontal wye. The bidet would be vented separately into a 2" vent as shown. The wye would be a 3" wye with a 2" inlet. The bidet has a 1-1/4" trap and tailpiece.
I've attempted to diagram the system and all horizontal runs are sloped 2% (though not shown).
The inspector has visited the site and given verbal approval of my plans but a Master Plumber has expressed concern about not having another vent between the toilet and stack (as I understand it). He states:
"""
There are two floor outlet fixtures, so they need to be circuit vented in order to keep them in the same horizontal plane, wet venting is not an option. A circuit vent requires the vent portion of the pipe to remain full size up to the point of vent, that means 3” until vent is tied in. A 3” x 1-1/2” san tee and a 3” x 1-1/2” wye for the bidet is the minimum drain and venting scenario. The way you are drawing it, the bidet is individually vented and the toilet isn’t vented at all, because the bidet enters the 3” drain portion before the vent stack does.
"""
I don't see why adding the bidet means the toilet isn't vented at all. What am I missing?