AllenEllis
New Member
Hi all,
I'm re-doing a laundry area and I think I have a clever trick to venting my washer and sink, but I want to see what you guys think:
As I understand it, the purpose of venting is to allow air to escape from the pipes as water tries to flow down. But because of the way the washer's drain hose rests inside the drain pipe, there is an opening, and therefore, two-way airflow.
So as water drains from the sink, air can be pushed out through the top of the washer's drain, and vice versa. The p-trap under the slab prevents sewer gases from coming up either opening. So in this case, is there even a need for a vent through the roof?
The complications I forsee are:
1) If the sink is full and plugged, the washer may not be able to drain and may overflow
2) Draining water from the washer might flow into my sink a little
3) If you drain a lot of water down the sink at once, might there be enough pressure for it to come out the washer's drain? Would a sanitary T help prevent this?
Any other thoughts?
Thanks.
I'm re-doing a laundry area and I think I have a clever trick to venting my washer and sink, but I want to see what you guys think:
As I understand it, the purpose of venting is to allow air to escape from the pipes as water tries to flow down. But because of the way the washer's drain hose rests inside the drain pipe, there is an opening, and therefore, two-way airflow.
So as water drains from the sink, air can be pushed out through the top of the washer's drain, and vice versa. The p-trap under the slab prevents sewer gases from coming up either opening. So in this case, is there even a need for a vent through the roof?
The complications I forsee are:
1) If the sink is full and plugged, the washer may not be able to drain and may overflow
2) Draining water from the washer might flow into my sink a little
3) If you drain a lot of water down the sink at once, might there be enough pressure for it to come out the washer's drain? Would a sanitary T help prevent this?
Any other thoughts?
Thanks.
I don't see a vent on the p-trap underground, that would be sure to siphon dry
Terry
Last edited by a moderator: