04:57AM | 06/15/07
Member Since: 06/14/07
2 lifetime posts
My washing maching bubbles out of the stand pipe during the rinse cycle.

This happens once every five times or so.

I opened up the wall behind the machine and found out that there is no vent. Could that be my problem?

I also saw that there is a trap and a 90degree turn close to each other. Is it possible that these are too close to each other or too far apart?

Any help would be appreciated.

-Chris Arndt

Wallkill, NY


06:29AM | 06/15/07
Member Since: 01/24/06
1548 lifetime posts
The stand pipe should be 2" diameter with a 2" P trap and vented.

A lot of folks use plastic piping for drainage and these was fittings especially 90 deg ells are very short radius.

Ells should be replaced with long sweeps


06:41AM | 06/15/07
Member Since: 06/14/07
2 lifetime posts
So the hole in the stand pipe is NOT enough venting?



06:58AM | 06/17/07
Member Since: 01/24/06
1548 lifetime posts
Absolutely NOT

The small opening around the drain line will not suffice as a vent


08:21AM | 06/17/07
Member Since: 04/25/05
1915 lifetime posts
"So the hole in the stand pipe is NOT enough venting?"

All plumbing fixtues are vented on the "house side" by their construction.

The potential problem lies on the otherside of the trap. The connection between the trap and the rest of the sewer connections needs to be vented. Otherwise you can get air blocks that cause slow draining and gurgling and/or vacuums when other fixtures are used that will suck the water out of the trap.


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